TI1 DP83867IRRGZT Dp83867ir/cr robust, high immunity 10/100/1000 ethernet physical layer transceiver Datasheet

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DP83867IR, DP83867CR
SNLS484D – FEBRUARY 2015 – REVISED JULY 2016
DP83867IR/CR Robust, High Immunity 10/100/1000 Ethernet Physical Layer Transceiver
1 Features
3 Description
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The DP83867 is a robust, low power, fully featured
Physical Layer transceiver with integrated PMD
sublayers to support 10BASE-Te, 100BASE-TX and
1000BASE-T Ethernet protocols. Optimized for ESD
protection, the DP83867 exceeds 8kV IEC 61000-4-2
(direct contact).
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Ultra Low RGMII Latency TX < 90ns, RX < 290ns
Low Power consumption 457 mW
Exceeds 8000 V IEC 61000-4-2 ESD Protection
Meets EN55011 Class B Emission Standards
16 Programmable RGMII Delay Modes on RX/TX
Integrated MDI Termination Resistors
Programmable MII/GMII/RGMII Termination
Impedance
WoL (Wake on LAN) Packet Detection
25-MHz or 125-MHz Synchronized Clock Output
IEEE 1588 Time Stamp Support
RJ45 Mirror Mode
Fully Compatible to IEEE 802.3 10BASE-Te,
100BASE-TX, and 1000BASE-T Specification
Cable Diagnostics
MII, GMII and RGMII MAC Interface Options
Configurable I/O Voltage (3.3 V, 2.5 V, 1.8 V)
Fast Link up / Link Drop Modes
JTAG Support
The DP83867 is designed for easy implementation of
10/100/1000 Mbps Ethernet LANs. It interfaces
directly to twisted pair media via an external
transformer. This device interfaces directly to the
MAC layer through the IEEE 802.3 Standard Media
Independent Interface (MII), the IEEE 802.3 Gigabit
Media Independent Interface (GMII) or Reduced GMII
(RGMII). The QFP package supports MII/GMII/RGMII
whereas the QFN package supports RGMII.
The
DP83867
provides
precision
clock
synchronization, including a synchronous Ethernet
clock output. It has low latency and provides IEEE
1588 Start of Frame Detection.
The DP83867 consumes only 490mW (PAP) and
457mW (RGZ) under full operating power. Wake on
LAN can be used to lower system power
consumption.
2 Applications
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Device Information(1)
Motor and Motion Control
Industrial Factory Automation
Industrial Embedded Computing
Wired and Wireless Communications
Infrastructure
Test and Measurement
Consumer Electronics
Part Number
Temperature
Package
Body Size
(NOM)
DP83867IRPAP
–40°C to
+85°C
QFP (64)
10 mm x 10 mm
DP83867IRRGZ
–40°C to
+85°C
QFN (48)
7 mm x 7 mm
QFN (48)
7 mm x 7 mm
DP83867CRRGZ 0°C to +70°C
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
System Diagram
MII (PAP)
GMII (PAP)
RGMII (PAP, RGZ)
Ethernet MAC
10BASE-Te
100BASE-TX
1000BASE-T
DP83867
10/100/1000 Mbps
Ethernet Physical Layer
25 MHz
Crystal or Oscillator
Magnetics
RJ-45
Status
LEDs
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
DP83867IR, DP83867CR
SNLS484D – FEBRUARY 2015 – REVISED JULY 2016
www.ti.com
Table of Contents
1
2
3
4
5
6
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Device Comparison ...............................................
Pin Configuration and Functions .........................
6.1
7
Unused Pins........................................................... 12
Specifications....................................................... 13
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
8
1
1
1
3
7
7
Absolute Maximum Ratings ....................................
ESD Ratings............................................................
Recommended Operating Conditions.....................
Thermal Information ................................................
Electrical Characteristics.........................................
Powerup Timing .....................................................
Reset Timing ...........................................................
MII Serial Management Timing ...............................
RGMII Timing ..........................................................
GMII Transmit Timing ...........................................
GMII Receive Timing ............................................
100Mbps MII Transmit Timing ..............................
100Mbps MII Receive Timing ...............................
10Mbps MII Transmit Timing ................................
10Mbps MII Receive Timing .................................
Typical Characteristics ..........................................
13
13
14
14
14
16
17
18
19
21
22
23
23
24
24
25
Detailed Description ............................................ 26
8.1 Overview ................................................................. 26
2
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8.2
8.3
8.4
8.5
8.6
9
Functional Block Diagram .......................................
Feature Description.................................................
Device Functional Modes........................................
Programming ..........................................................
Register Maps .........................................................
27
29
31
46
55
Application and Implementation ...................... 113
9.1 Application Information.......................................... 113
9.2 Typical Application ............................................... 113
10 Power Supply Recommendations ................... 117
11 Layout................................................................. 120
11.1
11.2
11.3
11.4
11.5
11.6
Signal Traces ......................................................
Return path .........................................................
Transformer Layout.............................................
Metal Pour...........................................................
PCB Layer Stacking............................................
Layout Example ..................................................
120
120
121
121
121
122
12 Device and Documentation Support ............... 123
12.1 Documentation Support .....................................
12.2 Related Links ......................................................
12.3 Receiving Notification of Documentation
Updates..................................................................
12.4 Community Resources........................................
12.5 Trademarks .........................................................
12.6 Electrostatic Discharge Caution ..........................
12.7 Glossary ..............................................................
123
123
123
123
123
123
123
13 Mechanical, Packaging, and Orderable
Information ......................................................... 123
Copyright © 2015–2016, Texas Instruments Incorporated
Product Folder Links: DP83867IR DP83867CR
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SNLS484D – FEBRUARY 2015 – REVISED JULY 2016
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (November 2015) to Revision D
Page
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Added Fast Link Drop Configuration Register (FLD_CFG) register ....................................................................................... 3
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Added '(Straps Required)' to RX_DV/RX_CTRL pin in Table 2 ........................................................................................... 10
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Changed '1nF' to '1µF' for VDD1P1 and VDD1P0 pin in Table 2 ........................................................................................ 12
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Added storage temperature to Absolute Maximum Ratings................................................................................................. 13
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Added Operating Junction Temperature to Recommended Operating Conditions .............................................................. 14
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Changed parameter symbol from VIH to VIH in Electrical Characteristics............................................................................ 14
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Added MDC toggling clarification to Reset Timing (2) ............................................................................................................ 17
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Changed target strap voltage thresholds in Table 5 ............................................................................................................ 46
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Changed 'SPEED_SEL1' to 'ANEG_SEL1' in Table 6 ......................................................................................................... 47
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Added '(Straps Required)' to RX_DV/RX_CTRL in Table 6 ................................................................................................. 47
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Changed 'SPEED_SEL0' to 'ANEG_SEL' in Table 6 .......................................................................................................... 48
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Changed 'SPEED_SEL0' to 'ANEG_SEL0' in Table 6 ........................................................................................................ 48
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Changed table name from 'PAP Speed Select Strap Details' to Table 7............................................................................. 49
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Changed 'SPEED_SEL0' and 'SPEED_SEL' to 'ANEG_SEL0' and 'ANEG_SEL1' in Table 7 ............................................ 49
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Changed table name from 'RGZ Speed Select Strap Details' to Table 8 ............................................................................ 49
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Changed 'SPEED_SEL' to 'ANEG_SEL' in Table 8 ............................................................................................................. 49
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Changed Default state of from 'Strap' to '0' for bit 13 in Table 11........................................................................................ 55
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Changed Default state of from 'Strap' to '1' for bit 6 in Table 11.......................................................................................... 56
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Changed bit 9 name from 100BASE-T FULL DUPLEX to 1000BASE-T FULL DUPLEX in Configuration Register 1
(CFG1), Address 0x0009...................................................................................................................................................... 66
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Changed bit 9 descriptions from half duplex to full duplex in Configuration Register 1 (CFG1), Address 0x0009.............. 66
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Changed 'Interrupt Status and Event Control Register (ISR)' to 'MII Interrupt Control Register (MICR)' in MII
Interrupt Control Register (MICR) ........................................................................................................................................ 72
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Changed Register definition to move a statement from Interrupt Status Register (ISR) to MII Interrupt Control
Register (MICR) ................................................................................................................................................................... 72
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Changed default of bit 9 from '1' to '0' in Configuration Register 2 (CFG2), Address 0x0014 ............................................. 76
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Changed default of bits 5:0 from '0' to '0 0111' in Configuration Register 2 (CFG2), Address 0x0014 ............................... 76
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Added Fast Link Drop Configuration Register (FLD_CFG) register ..................................................................................... 86
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Changed Name of Bits 6:5 from 'STRAP_SPEED_SEL' to 'STRAP_ANEG_SEL' in Table 44 ........................................... 89
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Changed Name of Bit 6 from 'RESERVED' to 'RESERVED (RGZ)' in Table 44 ................................................................. 89
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Changed Name of Bit 5 from 'STRAP_SPEED_SEL (PAP)' to 'STRAP_SPEED_SEL (RGZ)' in Table 44 ........................ 89
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Changed name of Bit 6:4 from 'RESERVED' to 'RESERVED (PAP)' in Table 45 .............................................................. 90
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Added description for 'STRAP_RGMII_CLK_SKEW_TX (RGZ)' in Table 45 ..................................................................... 90
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Changed name of Bit 2:0 from 'RESERVED' to 'RESERVED (PAP)' in Table 45 .............................................................. 90
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Added description for 'STRAP_RGMII_CLK_SKEW_RX (RGZ)' in Table 45 ..................................................................... 90
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Changed default value of bit 4:0 from '10000' to 'TRIM' in I/O Configuration (IO_MUX_CFG) ........................................ 102
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Changed description for IO_IMPEDANCE_CTRL bits in I/O Configuration (IO_MUX_CFG) ............................................ 102
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Changed Power Supply Recommendations section .......................................................................................................... 117
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Added "The 2.5-V VDDA2P5 can come up with or after the 1.8-V VDDA1P8 but not before it" to Power Supply
Recommendations ............................................................................................................................................................. 119
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Added Figure 33 ................................................................................................................................................................ 119
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Added Table 124 ............................................................................................................................................................... 119
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Added note regarding 1.8-V supply sequence if no load exists on 2.5-V supply in Layout .............................................. 119
Copyright © 2015–2016, Texas Instruments Incorporated
Product Folder Links: DP83867IR DP83867CR
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DP83867IR, DP83867CR
SNLS484D – FEBRUARY 2015 – REVISED JULY 2016
www.ti.com
Changes from Revision B (August 2015) to Revision C
Page
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Changed the title to add DP83867IRRGZ/CRRGZ in the datasheet. ................................................................................... 1
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Added part numbers .............................................................................................................................................................. 1
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Changed latency bullet point in Featuresfor better description of the Low Latency Feature. ................................................ 1
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Changed Power consumption number in Features section.................................................................................................... 1
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Added Radiated Emissions performance to Features............................................................................................................ 1
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Added MDI Termination Resistor in Features ........................................................................................................................ 1
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Added Programmable MAC Interface Impedance in ............................................................................................................. 1
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Added 'RJ45 Mirror Mode' to Features................................................................................................................................... 1
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Added compatibility to Features ............................................................................................................................................. 1
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Added MAC interface information in Description.................................................................................................................... 1
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Added Package information for the new devices in Device Information table ....................................................................... 1
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Added thermal information for RGZ Devices in Thermal Information .................................................................................... 2
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Added thermal information for RGZ Devices in Thermal Information .................................................................................... 4
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Added Device Comparison Table........................................................................................................................................... 7
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Changed table to add information about new RGZ devices................................................................................................... 9
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Added information about pull-up pull-down resistors in Table Note of Pin Functions table .................................................. 9
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Changed bypass capacitor information for power pins in ................................................................................................... 12
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Added Unused Pins section ................................................................................................................................................ 12
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Added Absolute Maximum Ratings table.............................................................................................................................. 13
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Added ESD information about new RGZ devices in ESD Ratings ...................................................................................... 13
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Added VDD1P0 information in Recommended Operating Conditions ................................................................................. 14
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Added temperature information about RGZ devices in Recommended Operating Conditions ........................................... 14
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Added thermal information for RGZ Devices in Thermal Information .................................................................................. 14
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Added PMD output voltage data for new RGZ devices in Electrical Characteristics .......................................................... 15
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Added RGMII TX and RX Latency values in RGMII Timing (4).............................................................................................. 19
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Added FBD for new RGZ devices in Functional Block Diagram .......................................................................................... 28
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Added "Magic Packet should be byte aligned" in Magic Packet Structure section. ............................................................. 29
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Changed "Auto-MDIX is independent of Auto-Negotiation" to "For 10/100, Auto-MDIX is independent of AutoNegotiation" in Auto-MDIX Resolution.................................................................................................................................. 39
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Added Loopback Availability table........................................................................................................................................ 40
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Changed description for Analog Loopback........................................................................................................................... 40
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Added description for External Loopback............................................................................................................................. 41
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Changed "improperly-terminated cables with ±1m accuracy" to "improperly-terminated cables, and crossed pairs
wires with ±1m accuracy" in TDR......................................................................................................................................... 42
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Added "0.5ms in 1000M mode" in Fast Link Drop section ................................................................................................... 43
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Deleted mention of FLD_CFG and FLD_THR_CFG from Fast Link Drop .......................................................................... 43
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Changed Mirror Mode Configuration table. .......................................................................................................................... 45
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Added Added internal resistor to the diagram in Strap Circuit ............................................................................................ 46
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Added Target voltage range in Strap Resistor Ratios table ................................................................................................. 46
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Added strapping information for RGZ devices in Table 6 ................................................................................................... 47
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Changed incorrect pin number for LED_1 and LED_0 in 4-Level Strap Pins table ............................................................. 48
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Added RGMII TX and RX Skew Strap information to Table 6 ............................................................................................. 48
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Added Table 8 ..................................................................................................................................................................... 49
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Added Table 9 ..................................................................................................................................................................... 49
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Added Table 10 ................................................................................................................................................................... 49
4
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Copyright © 2015–2016, Texas Instruments Incorporated
Product Folder Links: DP83867IR DP83867CR
DP83867IR, DP83867CR
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SNLS484D – FEBRUARY 2015 – REVISED JULY 2016
•
Added information regarding address configuration of RGZ devices to PHY Address Configuration ................................. 52
•
Added Power Saving Modes section.................................................................................................................................... 54
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Changed Bit 13 description in Register 0x14 ...................................................................................................................... 76
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Deleted "in Robust Auto MDI-X modes" in bit 15 description of Configuration Register 3 (CFG3) ..................................... 83
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Added "ms" to timer values in bit 13:12 in Configuration Register 3 (CFG3)....................................................................... 83
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Deleted Registers FLD_CFG and FLD_THR_CFG from Datasheet. ................................................................................... 85
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Changed description for bit 11 in 100BASE-TX Configuration (100CR) ............................................................................. 88
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Added information in bit 10:7 description for 100BASE-TX Configuration (100CR) ............................................................ 88
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Added comment about RGZ devices in GPIO Mux Control Register 1 (GPIO_MUX_CTRL1).......................................... 103
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Added comment about RGZ devices in GPIO Mux Control Register 2 (GPIO_MUX_CTRL2).......................................... 105
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Added GPIO_MUX_CTRL register for RGZ devices.......................................................................................................... 106
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Added TDR registers .......................................................................................................................................................... 107
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Added footnote about voltage level for RGZ devices in Figure 31..................................................................................... 117
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Added Comment for VDDA1P8 pins in Two Supply Configuration section. ..................................................................... 117
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Added footnote about Voltage level for RGZ devices in Figure 32 .................................................................................... 118
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Added power down supply sequence sentence in Power Supply Recommendations ...................................................... 119
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Changed Layout section..................................................................................................................................................... 120
Changes from Revision A (June 2015) to Revision B
Page
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Added "Power consumption as low as 490 mW" to the Features list .................................................................................... 1
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Changed Description text From: "The DP83867 consumes only 565 mW" To: "The DP83867 consumes only 490 mW" ... 1
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Changed Pin RBIAS Description From: "A 10 kΩ +/-1% resistor" To: "A 11 kΩ ±1% resistor". .......................................... 12
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Changed Power consumption, 2 supplies TYP value From 565 mW To 530 mW in the Electrical Characteristics ............ 15
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Changed Power consumption, optional 3rd supply TYP value From 545 mW To 490 mW in the Electrical
Characteristics ...................................................................................................................................................................... 15
•
Changed Register address: From: "BICSR1 register (0x0039)" To: "BICSR2 register (0x0072)", and changed From:
"read from the BISCR register (0x0016h)" To: "read from the STS2 register (0x0017h)" in the BIST Configuration .......... 42
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Changed section BIST Control and Status Register 1 (BICSR1) and Table 46 From: Address 0x0039 To: Address
0x0071 .................................................................................................................................................................................. 91
•
Changed section BIST Control and Status Register 2 (BICSR2) and Table 47 From: Address 0x003A To: Address
0x0072 .................................................................................................................................................................................. 91
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DP83867IR, DP83867CR
SNLS484D – FEBRUARY 2015 – REVISED JULY 2016
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Changes from Original (February 2015) to Revision A
Page
•
Changed the document title From: "Robust, Low Power" To: "Robust, High Immunity" ....................................................... 1
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Changed the Features listed under "Highlights" .................................................................................................................... 1
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Changed the Applications list ................................................................................................................................................ 1
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Changed the Description text and layout .............................................................................................................................. 1
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Added TF fall time = 0.75 ns (Max) in RGMII Timing (4) ........................................................................................................ 19
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Added T4, MDI to GMII Latency = 264 ns (NOM) to GMII Receive Timing (6). .................................................................... 22
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Changed the title of Figure 21 From: Typical MDC/MDIO Read Operation To: Fast Link Drop Mechanism....................... 43
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Moved text From the end of Table 11 To PHY Identifier Register #1 (PHYIDR1) .............................................................. 59
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Changed format of loopback control bits in Table 31 "BIST Control Register (BISCR)" .................................................... 77
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Changed BIT NAME (11:8) From: "LED_ACT_SEL To: LED_2_SEL in Table 33 .............................................................. 80
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Changed BIT NAME (7:4) From: "LED_SPD_SEL To: LED_1_SEL in Table 33 ............................................................... 81
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Changed BIT NAME (3:0 From: "LED_LNK_SEL To: LED_0_SEL in Table 33 ................................................................. 81
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Changed the title of Table 45 from: Address 0x006FE to: Address 0x006F ....................................................................... 90
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Changed default of bits 12:8 to 0 1100 in I/O Configuration (IO_MUX_CFG), Address 0x0170 ....................................... 102
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Deleted text "of the 64-QFP package" from the second paragraph in section Cable Line Driver...................................... 114
•
Deleted text "for MII Mode" from the second paragraph in section Clock In (XI) Recommendation ................................. 115
6
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Product Folder Links: DP83867IR DP83867CR
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SNLS484D – FEBRUARY 2015 – REVISED JULY 2016
5 Device Comparison
Table 1. Device Features Comparison
DEVICE
MAC
DP83867CRRGZ
RGMII
TEMPERATURE RANGE
0°C
70°C
TEMPERATURE GRADE
Commercial
DP83867IRRGZ
RGMII
–40°C
85°C
Industrial
DP83867IRPAP
MII/GMII/RGMII
–40°C
85°C
Industrial
6 Pin Configuration and Functions
RX_D5/GPIO
RX_D6/GPIO
RXD_7/GPIO
TX_EN/TX_CTRL
RX_DV/RX_CTRL
RX_ER/GPIO
COL/GPIO
VDDIO
CS/GPIO
VDD1P1
RESET_N
INT/PWDN
LED_2
LED_1
LED_0
VDDA1P8
64-Pin QFP
Package PAP
Top View
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
RESERVED
1
48
RX_D4/GPIO
TD_P_A
2
47
RX_D3
3
46
RX_D2
VDDA2P5
4
45
RX_D1
TD_P_B
5
44
RX_D0
TD_M_B
6
43
RX_CLK
7
42
VDD1P1
41
VDDIO
TD_M_A
RESERVED
VDD1P1
8
RESERVED
9
DP83867
40
GTX_CLK
TX_ER
TD_P_C
10
39
TD_M_C
11
38
TX_D0
VDDA2P5
12
37
TX_D1
TD_P_D
13
36
TX_D2
14
35
TX_D3
RBIAS
15
34
TX_D4
RESERVED
16
33
TX_D5
TD_M_D
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TX_D6
TX_D7
TX_CLK
VDD1P1
JTAG_TDI
JTAG_TMS
JTAG_TDO
JTAG_CLK
JTAG_TRSTN
VDDIO
CLK_OUT
MDIO
MDC
X_I
X_O
VDDA1P8
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
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DP83867IR, DP83867CR
SNLS484D – FEBRUARY 2015 – REVISED JULY 2016
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VDDA1P8
LED_0
LED_1
LED_2
INT/PWDN
RESET_N
VDD1P0
VDDIO
GPIO_1
GPIO_0
RX_CTRL
TX_CTRL
48-Pin QFN
Package RGZ
Top View
48
47
46
45
44
43
42
41
40
39
38
37
TD_P_A
1
36
RX_D3
TD_M_A
2
35
RX_D2
VDDA2P5
3
34
RX_D1
TD_P_B
4
33
RX_D0
TD_M_B
5
32
RX_CLK
DP83867
8
VDDA1P0
6
TOP VIEW
(not to scale)
31
VDD1P0
TD_P_C
7
48-pin QFN Package
30
VDDIO
TD_M_C
8
DAP = GND
29
GTX_CLK
25
TX_D3
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14
15
16
17
18
19
20
21
22
23
24
VDD1P0
13
JTAG_TDI
12
JTAG_TMS
RBIAS
JTAG_CLK
TX_D2
JTAG_TDO
26
VDDIO
11
MDIO
TD_M_D
CLK_OUT
TX_D1
X_I
TX_D0
27
MDC
28
10
X_O
9
TD_P_D
VDDA1P8
VDDA2P5
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SNLS484D – FEBRUARY 2015 – REVISED JULY 2016
Table 2. Pin Functions
PIN
NAME
MAC
INTERFACES
TX_CLK
NUMBER
PAP
RGMII, GMII,
MII
TYPE (1)
DESCRIPTION
O
MII TRANSMIT CLOCK: TX_CLK is a continuous clock signal
driven by the PHY during 10 Mbps or 100 Mbps MII mode. TX_CLK
clocks the data or error out of the MAC layer and into the PHY.
RGZ
RGMII
30
The TX_CLK clock frequency is 2.5 MHz in 10BASE-Te and 25
MHz in 100BASE-TX mode.
TX_D7
31
I, PD
GMII TRANSMIT DATA Bit 7: This signal carries data from the
MAC to the PHY in GMII mode. It is synchronous to the transmit
clock GTX_CLK.
TX_D6
32
I, PD
GMII TRANSMIT DATA Bit 6: This signal carries data from the
MAC to the PHY in GMII mode. It is synchronous to the transmit
clock GTX_CLK.
TX_D5
33
I, PD
GMII TRANSMIT DATA Bit 5: This signal carries data from the
MAC to the PHY in GMII mode. It is synchronous to the transmit
clock GTX_CLK.
TX_D4
34
I, PD
GMII TRANSMIT DATA Bit 4: This signal carries data from the
MAC to the PHY in GMII mode. It is synchronous to the transmit
clock GTX_CLK.
TX_D3
35
25
I, PD
TRANSMIT DATA Bit 3: This signal carries data from the MAC to
the PHY in GMII, RGMII, and MII modes. In GMII and RGMII
modes, it is synchronous to the transmit clock GTX_CLK. In MII
mode, it is synchronous to the transmit clock TX_CLK.
TX_D2
36
26
I, PD
TRANSMIT DATA Bit 2: This signal carries data from the MAC to
the PHY in GMII, RGMII, and MII modes. In GMII and RGMII
modes, it is synchronous to the transmit clock GTX_CLK. In MII
mode, it is synchronous to the transmit clock TX_CLK.
TX_D1
37
27
I, PD
TRANSMIT DATA Bit 1: This signal carries data from the MAC to
the PHY in GMII, RGMII, and MII modes. In GMII and RGMII
modes, it is synchronous to the transmit clock GTX_CLK. In MII
mode, it is synchronous to the transmit clock TX_CLK.
TX_D0
38
28
I, PD
TRANSMIT DATA Bit 0: This signal carries data from the MAC to
the PHY in GMII, RGMII, and MII modes. In GMII and RGMII
modes, it is synchronous to the transmit clock GTX_CLK. In MII
mode, it is synchronous to the transmit clock TX_CLK.
GMII TRANSMIT ERROR: This signal is used in GMII mode to
force the PHY to transmit invalid symbols. The TX_ER signal is
synchronous to the GMII transmit clock GTX_CLK.
TX_ER
39
I, PD
In MII 4B nibble mode, assertion of Transmit Error by the controller
causes the PHY to issue invalid symbols followed by Halt (H)
symbols until deassertion occurs.
In GMII mode, assertion causes the PHY to emit one or more codegroups that are invalid data or delimiter in the transmitted frame.
GTX_CLK
(1)
40
29
I, PD
GMII and RGMII TRANSMIT CLOCK: This continuous clock signal
is sourced from the MAC layer to the PHY. Nominal frequency is
125 MHz.
The functionalities of the pins are defined below.
(a) Type I: Input
(b) Type O: Output
(c) Type I/O: Input /Output
(d) Type PD or PU: Internal Pull-down or Pull-up
(e) Type S: Strap Configuration Pin
(f) Type: A Analog pins
NOTE: Internal Pull-Up/Pull-Down resistors on the IO pins are disabled when the device enters functional mode after power up.
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Table 2. Pin Functions (continued)
PIN
NAME
TYPE (1)
NUMBER
PAP
DESCRIPTION
RGZ
RECEIVE CLOCK: Provides the recovered receive clocks for
different modes of operation:
RX_CLK
43
32
O
2.5 MHz in 10 Mbps mode.
25 MHz in 100 Mbps mode.
125 MHz in 1000 Mbps GMII and RGMII mode.
RX_D0
44
33
S, O, PD
RECIEVE DATA Bit 0: This signal carries data from the PHY to the
MAC in GMII, RGMII, and MII modes. It is synchronous to the
receive clock RX_CLK.
RX_D1
45
34
O, PD
RECIEVE DATA Bit 1: This signal carries data from the PHY to the
MAC in GMII, RGMII, and MII modes. It is synchronous to the
receive clock RX_CLK.
RX_D2
46
35
S, O, PD
RECIEVE DATA Bit 2: This signal carries data from the PHY to the
MAC in GMII, RGMII, and MII modes. It is synchronous to the
receive clock RX_CLK.
RX_D3
47
36
O, PD
RECIEVE DATA Bit 3: This signal carries data from the PHY to the
MAC in GMII, RGMII, and MII modes. It is synchronous to the
receive clock RX_CLK.
RX_D4
48
S, O, PD
RECIEVE DATA Bit 4: This signal carries data from the PHY to the
MAC in GMII mode. It is synchronous to the receive clock RX_CLK.
RX_D5
49
S, O, PD
RECIEVE DATA Bit 5: This signal carries data from the PHY to the
MAC in GMII mode. It is synchronous to the receive clock RX_CLK.
RX_D6
50
S, O, PD
RECIEVE DATA Bit 6: This signal carries data from the PHY to the
MAC in GMII mode. It is synchronous to the receive clock RX_CLK.
RX_D7
51
S, O, PD
RECIEVE DATA Bit 7: This signal carries data from the PHY to the
MAC in GMII mode. It is synchronous to the receive clock RX_CLK.
TX_EN /
TX_CTRL
52
37
O, PD
In RGMII mode, it combines the transmit enable and the transmit
error signals of GMII mode using both clock edges.
RX_DV /
RX_CTRL
53
38
S, O, PD
RECEIVE DATA VALID or RECEIVE CONTROL: In MII and GMII
modes, it is asserted high to indicate that valid data is present on
the corresponding RXD[3:0] in MII mode and RXD[7:0] in GMII
mode.
In RGMII mode, the receive data available and receive error are
combined (RXDV_ER) using both rising and falling edges of the
receive clock (RX_CLK).
(Straps
Required)
RX_ER / GPIO
TRANSMIT ENABLE or TRANSMIT CONTROL: In MII or GMII
mode,it is an active high input sourced from MAC layer to indicate
transmission data is available on the TXD.
54
O, PD
RECEIVE ERROR: In 10 Mbps, 100 Mbps and 1000 Mbps mode
this active high output indicates that the PHY has detected a
Receive Error. The RX_ER signal is synchronous with the receive
clock (RX_CLK).
In RGMII, the RX_ER pin is not used.
COL / GPIO
55
O, PD
COLLISION DETECT: Asserted high to indicate detection of a
collision condition (assertion of CRS due to simultaneous transmit
and receive activity) in Half-Duplex modes. This signal is not
synchronous to either MII clock (GTX_CLK, TX_CLK or RX_CLK).
This signal is not defined and stays low for Full-Duplex modes.
In RGMII mode, COL is not used.
CARRIER SENSE: CRS is asserted high to indicate the presence
of a carrier due to receive or transmit activity in Half-Duplex mode.
CRS
56
S, O, PD
For 10BASE-Te and 100BASE-TX Full-Duplex operation CRS is
asserted when a received packet is detected. This signal is not
defined for 1000BASE-T Full-Duplex mode.
In RGMII mode, CRS is not used.
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Table 2. Pin Functions (continued)
PIN
NAME
NUMBER
PAP
TYPE (1)
DESCRIPTION
RGZ
General Purpose I/O
GPIO_0
39
S, O, PD
General Purpose I/O: This signal provides a multi-function
configurable I/O. Please refer to the GPIO_MUX_CTRL register for
details.
GPIO_1
40
S, O, PD
General Purpose I/O: This signal provides a multi-function
configurable I/O. Please refer to the GPIO_MUX_CTRL register for
details.
MANAGEMENT INTERFACE
MDC
MDIO
20
21
16
17
I, PD
MANAGEMENT DATA CLOCK: Synchronous clock to the MDIO
serial management input/output data. This clock may be
asynchronous to the MAC transmit and receive clocks. The
maximum clock rate is 25MHz and no minimum.
I/O
MANAGEMENT DATA I/O: Bi-directional management
instruction/data signal that may be sourced by the management
station or the PHY. This pin requires pullup resistor. The IEEE
specified resistor value is 1.5kΩ, but a 2.2kΩ is acceptable.
INTERRUPT / POWER DOWN:
The default function of this pin is POWER DOWN.
INT / PWDN
60
44
I/O, PU
POWER DOWN: Asserting this signal low enables the Power Down
mode of operation. In this mode, the device will power down and
consume minimum power. Register access will be available
through the Management Interface to configure and power up the
device.
INTERRUPT: This pin may be programmed as an interrupt output
instead of a Powerdown input. In this mode, Interrupts will be
asserted low using this pin. Register access is required for the pin
to be used as an interrupt mechanism. When operating this pin as
an interrupt, an external 2.2kΩ connected to the VDDIO supply is
recommended.
RESET
59
43
I, PU
RESET: The active low RESET initializes or re-initializes the
DP83867. All internal registers will re-initialize to their default state
upon assertion of RESET. The RESET input must be held low for a
minimum of 1µs.
XI
19
15
I
CRYSTAL/OSCILLATOR INPUT: 25 MHz oscillator or crystal input
(50 ppm)
XO
18
14
O
CRYSTAL OUTPUT: Second terminal for 25 MHz crystal. Must be
left floating if a clock oscillator is used.
CLK_OUT
22
18
O
CLOCK OUTPUT: Output clock
JTAG_CLK
25
20
I, PU
JTAG TEST CLOCK: IEEE 1149.1 Test Clock input, primary clock
source for all test logic input and output controlled by the testing
entity.
JTAG_TDO
26
21
O
JTAG TEST DATA OUTPUT: IEEE 1149.1 Test Data Output pin,
the most recent test results are scanned out of the device via TDO.
JTAG_TMS
27
22
I, PU
JTAG TEST MODE SELECT: IEEE 1149.1 Test Mode Select pin,
the TMS pin sequences the Tap Controller (16-state FSM) to select
the desired test instruction.
JTAG_TDI
28
23
I, PU
JTAG TEST DATA INPUT: IEEE 1149.1 Test Data Input pin, test
data is scanned into the device via TDI.
JTAG_TRSTN
24
I, PU
JTAG TEST RESET: IEEE 1149.1 Test Reset pin, active low reset
provides for asynchronous reset of the Tap Controller. This reset
has no effect on the device registers.
RESET_N
CLOCK INTERFACE
JTAG INTERFACE
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Table 2. Pin Functions (continued)
PIN
NAME
TYPE (1)
NUMBER
PAP
DESCRIPTION
RGZ
LED INTERFACE
LED_2
61
45
S, I/O, PD
LED_2: By default, this pin indicates receive or transmit activity.
Additional functionality is configurable via LEDCR1[11:8] register
bits.
NOTE: This pin is a Strap Configuration pin for RGZ devices only.
LED_1
62
46
S, I/O, PD
LED_1: By default, this pin indicates that 1000BASE-T link is
established. Additional functionality is configurable via
LEDCR1[7:4] register bits.
LED_0
63
47
S, I/O, PD
LED_0: By default, this pin indicates that link is established.
Additional functionality is configurable via LEDCR1[3:0] register
bits.
MEDIA DEPENDENT INTERFACE
TD_P_A
2
1
A
Differential Transmit and Receive Signals
TD_M_A
3
2
A
Differential Transmit and Receive Signals
TD_P_B
5
4
A
Differential Transmit and Receive Signals
TD_M_B
6
5
A
Differential Transmit and Receive Signals
TD_P_C
10
7
A
Differential Transmit and Receive Signals
TD_M_C
11
8
A
Differential Transmit and Receive Signals
TD_P_D
13
10
A
Differential Transmit and Receive Signals
TD_M_D
14
11
A
Differential Transmit and Receive Signals
A
Reserved
12
A
Bias Resistor Connection. A 11 kΩ +/-1% resistor should be
connected from RBIAS to GND.
19, 30, 41
P
I/O Power: 1.8V (±5%), 2.5V (±5%) or 3.3V (±5%). Each pin
requires a 1µF & 0.1µF capacitor to GND
OTHER PINS
Reserved
RBIAS
1, 7, 9, 16
15
POWER AND GROUND PINS
VDDIO
23, 41, 57
1.8V Analog Supply (+/-5%).
VDDA1P8
17, 64
13, 48
P
No external supply is required for this pin. When unused, no
connections should be made to this pin.
For additional power savings, an external 1.8V supply can be
connected to these pins. When using an external supply, each pin
requires a 1µF & 0.1µF capacitor to GND.
VDDA2P5
VDD1P1
6.1
2.5V Analog Supply (+/-5%). Each pin requires a 1µF & 0.1µF
capacitor to GND
P
1.1V Analog Supply (+/-5%). Each pin requires a 1µF & 0.1µF
capacitor to GND
6, 24, 31, 42
P
1.0V Analog Supply (+15.5%,-5%). Each pin requires a 1µF &
0.1µF capacitor to GND
Die Attach Pad
P
Ground
3, 9
8, 29, 42, 58
VDD1P0
GND
P
4, 12
Die Attach Pad
Unused Pins
DP83867 has internal pull-ups or pull-downs on most pins. The datasheet details which pins have internal pullups or pull-downs, and which pins require external pull resistors.
Even though a device may have internal pull-up or pull-down resistors, a good practice is to terminate unused
inputs, rather than allowing them to float. Floating inputs could result in unstable conditions. This
recommendation does not apply to VDD1P8 pins. When unused, these pins should be left floating. It is
considered a safer practice to pull an unused input pin high or low with a pull-up or pull-down resistor. It is also
possible to group together adjacent unused input pins, and as a group pull them up or down using a single
resistor.
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7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
Supply voltage
(1)
MIN
MAX
VDDA2P5
–0.3
3.0
VDDA1P8
–0.3
2.1
(VDD1P1/VDD1P0)
–0.3
1.3
3.3-V option
–0.3
3.8
2.5-V option
–0.3
3.0
1.8-V option
–0.3
2.1
–0.3
6.5
–0.3
VDDIO +
0.3V
–0.3
VDDIO +
0.3V
–0.3
VDDIO +
0.3V
-60
150
VDDIO
MDI
MAC interface, MDIO, MDC, GPIO
Pins
INT/PWDN, RESET
JTAG
Storage temperature
(1)
UNIT
V
V
°C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
7.2 ESD Ratings
VALUE
V(ESD)
Electrostatic discharge
Human-body model (HBM), per
ANSI/ESDA/JEDEC JS-001 (1)
All pins except Media
Dependent Interface pins
±2500
Media Dependent Interface
pins (IRPAP/IRRGZ) (2)
±8000
Media Dependent Interface
pins (CRRGZ)
±6000
Charged-device model (CDM), per JEDEC specification JESD22C101 (3)
(1)
(2)
(3)
UNIT
V
±1500 (RGZ)
±750 (PAP)
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Manufacturing with
less than 500-V HBM is possible with the necessary precautions. Pins listed as ±8 V and/or ± 2 V may actually have higher
performance.
MDI Pins tested as per IEC 61000-4-2 standards.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Manufacturing with
less than 250-V CDM is possible with the necessary precautions. Pins listed as ±500 V may actually have higher performance.
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7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
Supply voltage
MIN
TYP
MAX
UNIT
VDDA2P5
2.375
2.5
2.625
V
VDDA1P8
1.71
1.8
1.89
VDD1P1 (PAP)
1.045
1.1
1.155
VDD1P0 (RGZ)
0.95
1.0
1.155
3.3-V option
3.15
3.3
3.45
2.5-V option
2.375
2.5
2.625
1.8-V option
1.71
1.8
1.89
0
25
70
°C
–40
25
85
°C
0
90
°C
–40
105
°C
VDDIO
Operating free air temperature
Commercial (DP83867CRRGZ)
Industrial (DP83867IRRGZ)
Industrial (DP83867IRPAP)
Operating junction temperature
Commercial (DP83867CRRGZ)
Industrial (DP83867IRRGZ)
Industrial (DP83867IRPAP)
7.4 Thermal Information
THERMAL METRIC (1)
PAP
RGZ
64 PINS
48 PINS
UNIT
RθJA
Junction-to-ambient thermal resistance
30.9
30.8
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
13.6
18.7
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
0.9
1.4
°C/W
RθJB
Junction-to-board thermal resistance
15.6
7.5
°C/W
ψJT
Junction-to-top characterization parameter
0.4
0.3
°C/W
ψJB
Junction-to-board characterization parameter
15.5
7.5
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
7.5 Electrical Characteristics
The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These
Specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life
of the product containing it.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
3.3-V VDDIO
VOH
High level output voltage
IOH = -4 mA
VOL
Low level output voltage
IOL = 4 mA
VIH
High level input voltage
VIL
Low level input voltage
2
V
0.6
1.7
V
V
0.7
V
2.5-V VVDDIO
VOH
High level output voltage
IOH = -4 mA
VOL
Low level output voltage
IOL = 4 mA
VIH
High level input voltage
VIL
Low level input voltage
VDDIO × 0.8
V
0.6
1.7
V
V
0.7
V
1.8-V VDDIO
VOH
High level output voltage
IOH = -1 mA
VOL
Low level output voltage
IOL = 1 mA
VIH
High level input voltage
VIL
Low level input voltage
VDDIO – 0.2
V
0.2
0.7 × VDDIO
V
V
0.2 × VDDIO
V
DC CHARACTERISTICS
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Electrical Characteristics (continued)
The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These
Specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life
of the product containing it.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IIH
Input high current
VIN = VDD –40°C to +85°C
-10
10
µA
IIL
Input low current
VIN = GND –40°C to +85°C
-10
10
µA
IOZ
TRI-STATE output current
VOUT = VDD, VOUT = GND
–40°C to +85°C
-10
10
µA
CIN
(1)
5
pF
Input Capacitance See
PMD OUTPUTS
VOD-10
MDI
VOD-100
MDI
VOD-1000
MDI
IRPAP/IRRGZ
1.54
CRRGZ
IRPAP/IRRGZ
1.96
V Peak
Differential
1.05
V Peak
Differential
0.82
V peak
Differential
1.75
0.95
CRRGZ
IRPAP/IRRGZ
1.75
1
1
0.67
CRRGZ
0.745
0.745
POWER CONSUMPTION
PAP
P1000
Power consumption, 2
supplies (2) (3)
530
mW
P1000
Power consumption, optional
3rd supply (2) (3)
490
mW
IDD25
Supply Current, 2 supplies
141
mA
125
mA
22
mA
90
mA
IDD11
125
mA
IDD18
51
mA
IDDIO (1.8 V)
19
mA
IDD11
IDDIO (1.8 V)
IDD25
Supply Current, optional 3rd
supply
RGZ
P1000
Power consumption, 2
supplies (2) (3)
495
mW
P1000
Power consumption, optional
3rd supply (2) (3)
457
mW
IDD25
Supply Current, 2 supplies
137
mA
108
mA
24
mA
86
mA
IDD10
108
mA
IDD18
50
mA
IDDIO (1.8 V)
24
mA
IDD10
IDDIO (1.8 V)
IDD25
(1)
(2)
(3)
Supply Current, optional 3rd
supply
Ensured by production test, characterization, or design.
Power consumption represents total operational power for 1000BASE-T.
See Power Supply Recommendations for details on 2 supply and 3 supply configuration.
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7.6 Powerup Timing
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(1)
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
UNIT
T1
Post Power Up Stabilization time prior to
MDC preamble for register accesses
MDIO is pulled high for 32-bit serial
management initialization.
200
ms
T2
Hardware Configuration Latch-in Time from
power up
Hardware Configuration Pins are
described in Strap Configuration.
200
ms
T3
Hardware Configuration pins transition to
output drivers
64
ns
(1)
Ensured by production test, characterization, or design.
VDD
XI clock
T1
Hardware
RESET_N
32 CLOCKS
MDC
T2
Latch-In of Hardware
Configuration Pins
T3
Dual Function Pins
Become Enabled As Outputs
INPUT
OUTPUT
Figure 1. Powerup Timing
16
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7.7 Reset Timing (1)
PARAMETER
T1
TEST CONDITIONS
Post RESET stabilization time prior to MDC
preamble for register accesses
MIN
MDIO is pulled high for 32-bit serial
management initialization.
Hardware configuration latch-in time from the
deassertion of RESET (either soft or hard)
T3
Hardware configuration pins transition to
output drivers
T4
RESET pulse width
(1)
MAX
UNIT
µs
195
MDC may toggle during this period when
MDIO remains high.
T2
NOM
Hardware Configuration Pins are
described in Strap Configuration.
120
64
X1 Clock must be stable for a minimum of
1 μs during RESET pulse low time
ns
ns
µs
1
Ensured by production test, characterization, or design.
VDD
XI clock
T1
T4
Hardware
RESET _N
32 CLOCKS
MDC
T2
Latch-In of Hardware
Configuration Pins
T3
Dual F unction Pins
Become Enabled As Outputs
input
output
Figure 2. Reset Timing
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7.8 MII Serial Management Timing (1)
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
MDC to MDIO (output) delay time
0
T2
MDIO (input) to MDC setup time
10
ns
T3
MDIO (input) to MDC hold time
10
ns
T4
MDC frequency
(1)
10
UNIT
T1
2.5
25
ns
MHz
Ensured by production test, characterization, or design.
MDC
T4
T1
MDIO (output )
MDC
T2
MDIO (input)
T3
Valid Data
Figure 3. MII Serial Management Timing
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7.9 RGMII Timing (1)
MIN
NOM
MAX
UNIT
TskewT
Data to Clock output Skew
(at Transmitter)
PARAMETER
See
(2)
TEST CONDITIONS
–500
0
500
ps
TskewR
Data to Clock input Skew
(at Receiver)
See
(2)
1
1.8
2.6
ns
TsetupT
Data to Clock output Setup
(at Transmitter – internal
delay)
See
(3)
1.2
2
ns
TholdT
Clock to Data output Hold
(at Transmitter – internal
delay)
See
(3)
1.2
2
ns
TsetupR
Data to Clock input Setup
See
(at Reciever – internal delay)
(3)
1
2
ns
TholdR
Data to Clock input Setup
See
(at Receiver – internal delay)
(3)
1
2
ns
Tcyc
Clock Cycle Duration (4)
See
(4)
7.2
8
8.8
ns
See
(5)
45
50
55
%
See
(5)
40
50
60
%
(5)
Duty_G
Duty Cycle for Gigabit
Duty_T
Duty Cycle for 10/100T (5)
TR
Rise Time (20% to 80%)
0.75
ns
TF
Fall Time (20% to 80%)
0.75
ns
TTXLAT
RGMII to MDI Latency
See
88
ns
TRXLAT
MDI to RGMII Latency
See
288
ns
(1)
(2)
(3)
(4)
(5)
Ensured by production test, characterization, or design.
When operating without RGMII internal delay, the PC board design requires clocks to be routed such that an additional trace delay of
greater than 1.5ns is added to the associated clock signal.
Device may operate with or without internal delay.
For 10Mbps and 100Mbps, Tcyc will scale to 400ns +/- 40ns and 40ns +/- 4ns.
Duty cycle may be stretched or shrunk during speed changes or while transitioning to a received packet’s clock domain as long as
minimum duty cycle is not violated and stretching occurs for no more that three Tcyc of the lowest speed transitioned between.
GTX
(at Transmitter)
TskewT
TXD [8:5][3:0]
TXD [7:4][3:0]
TX_CTL
TXD [3:0]
TXD [8:5]
TXD [7:4]
TXD [4]
TXEN
TXD [9]
TXERR
TskewR
GTX
(at Receiver)
Figure 4. RGMII Transmit Multiplexing and Timing Diagram
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RXC with Internal
Delay Added
RXC
(Source of Data)
TsetupT
RXD [8:5][3:0]
RXD [7:4][3:0]
RXD [3:0]
RXD [8:5]
RXD [7:4]
TholdT
RX_CTL
RXD [4]
RXDV
RXD [9]
RXERR
RXC
(at Receiver)
TholdR
TsetupR
Figure 5. RGMII Receive Multiplexing and Timing Diagram
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7.10 GMII Transmit Timing (1)
PARAMETER
TEST CONDITIONS
T1
GTX_CLK Duty Cycle
T2
GTX_CLK Rise / Fall Time
T3
Setup from valid TXD, TX_EN
and TX_ER to rising edge of
GTX_CLK
T4
Hold from rising edge of
GTX_CLK to invalid TXD,
TX_EN, and TX_ER
T5
GTX_CLK Stability
T6
GMII to MDI Latency
(1)
(2)
MIN
NOM
MAX
40
%
1
ns
2
ns
0.5
ns
–100
See
UNIT
60
100
(2)
72
ppm
ns
Ensured by production test, characterization, or design.
Operating in 1000Base-T .
tT5t
tT1t
GTX_CLK
T2
T4
T2
TXD [7:0]
TX_EN
TX_ER
T3
tT6t
MDI
Start of Frame
Figure 6. GMII Transmit Timing
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7.11 GMII Receive Timing (1)
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
UNIT
T1
Rising edge of RX_CLK to RXD,
RX_DV, and RX_ER delay
0.5
5.5
T2
RX_CLK Duty Cycle
40
60
%
T3
RX_CLK Rise / Fall Time
1
ns
T4
MDI to GMII Latency
(1)
(2)
See
(2)
264
ns
ns
Ensured by production test, characterization, or design.
Operating in 1000Base-T.
tT2t
T3
T3
RX_CLK
tT1t
RXD [7:0]
RX_DV
RX_ER
Valid Data
tT4t
MDI
Start of Frame
Figure 7. GMII Receive Timing
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7.12 100Mbps MII Transmit Timing (1)
MIN
NOM
MAX
T1
TX_CLK High/Low Time
PARAMETER
16
20
24
T2
TXD[3:0], TX_EN Data Setup to
TX_CLK
10
ns
T3
TXD[3:0], TX_EN Data Hold from
TX_CLK
0
ns
(1)
TEST CONDITIONS
UNIT
ns
Ensured by production test, characterization, or design.
T1
T1
TX_CLK
T2
TXD[3:0]
TX_EN
T3
Valid Data
Figure 8. 100Mbps MII Transmit Timing
7.13 100Mbps MII Receive Timing (1)
PARAMETER
T1
RX_CLK High/Low Time
T2
RX_CLK to RXD[3:0], RX_DV,
RX_ER Delay
(1)
(2)
TEST CONDITIONS
See
(2)
MIN
NOM
MAX
16
20
24
10
30
UNIT
ns
ns
Ensured by production test, characterization, or design.
RX_CLK may be held low or high for a longer period of time during transition between reference and recovered clocks. Minimum high
and low times will not be violated.
T1
T1
RX_CLK
T2
RXD[3: 0]
RX_DV
RX_ER
Valid Data
Figure 9. 100Mbps MII Receive Timing
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7.14 10Mbps MII Transmit Timing (1)
PARAMETER
T1
TX_CLK High/Low Time
T2
TXD[3:0], TX_EN Data Setup to
TX_CLK falling edge
T3
TXD[3:0], TX_EN Data Hold from
TX_CLK rising edge
(1)
(2)
TEST CONDITIONS
See
(2)
MIN
NOM
MAX
UNIT
190
200
210
ns
ns
25
ns
0
Ensured by production test, characterization, or design.
An attached MAC should drive the transmit signals using the positive edge of TX_CLK. As shown below, the MII signals are sampled on
the falling edge of TX_CLK.
T1
T1
TX_CLK
T2
T3
TXD[3:0]
TX_EN
Valid Data
Figure 10. 10Mbps MII Transmit Timing
7.15 10Mbps MII Receive Timing (1)
PARAMETER
TEST CONDITIONS
NOM
MAX
UNIT
160
200
240
ns
300
ns
T1
RX_CLK High/Low Time
T2
RXD[3:0], RX_DV transition
delay from RX_CLK rising edge
100
T3
RX_CLK rising edge delay from
RXD[3:0], RX_DV valid data
100
(1)
See
MIN
Ensured by production test, characterization, or design.
T1
T1
RX_CLK
T2
RXD[3:0]
RX_DV
T3
Valid Data
Figure 11. 10Mbps MII Receive Timing
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C1
(500 mV/DIV)
C1
(200 mV/DIV)
7.16 Typical Characteristics
Time (4 ns/DIV)
Time (32 ns/DIV)
1000Base-T Signaling
(Test Mode TM2 Output)
100Base-TX Signaling
(Scrambled Idles)
Figure 12. 1000Base-T Signaling
Figure 13. 100Base-TX Signaling
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8 Detailed Description
8.1 Overview
The DP83867 is a fully featured Physical Layer transceiver with integrated PMD sublayers to support 10BASETe, 100BASE-TX and 1000BASE-T Ethernet protocols.
The DP83867 is designed for easy implementation of 10/100/1000 Mbps Ethernet LANs. It interfaces directly to
twisted pair media via an external transformer. This device interfaces directly to the MAC layer through the IEEE
802.3u Standard Media Independent Interface (MII), the IEEE 802.3z Gigabit Media Independent Interface
(GMII), or Reduced GMII (RGMII).
The DP83867 provides precision clock synchronization, including a synchronous Ethernet clock output. It has
deterministic, low latency and provides IEEE 1588 Start of Frame Detection.
The DP83867 offers innovative diagnostic features including dynamic link quality monitoring for fault prediction
during normal operation. It can support up to 130m cable length.
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8.2 Functional Block Diagram
DP83867IRPAP
MGNT
& PHY CNTRL
RXD[7:0]
GMII
1000BASE-T
Block
10BASE-Te
Block
MII
RX_DV
MUX / DMUX
MII
100BASE-TX
Block
RX_ER
CRS
COL
RX_CLK
TX_CLK
TXD[7:0]
TX_EN
TX_ER
GTX_CLK
COMBINED MII / GMII / RGMII INTERFACE
Interrupt
MDC
MDIO
MGMT INTERFACE
MII
100BASE-TX
PCS
10BASE-Te PLS
100BASE-TX
PMA
10BASE-Te
PMA
GMII
1000BASE-T
PCS
Wake on
LAN
Echo cancellation
Crosstalk cancellation
ADC
Decode / Descramble
Equalization
Timing
Skew compensation
BLW
10000BASE-T
PMA
AutoNegotiation
100BASE-TX
PMD
Manchester
10 Mbps
PAM-5
17 Level PR Shaped
125 Msymbols/s
MLT-3
100 Mbps
DAC / ADC
SUBSYSTEM
TIMING
DRIVERS /
RECEIVERS
DAC / ADC
TIMING BLOCK
MAGNETICS
4-pair CAT-5 Cable
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Functional Block Diagram (continued)
DP83867IRRGZ, DP83867CRRGZ
MGNT
& PHY CNTRL
100BASE-TX
Block
10BASE-Te PLS
100BASE-TX
PMA
10BASE-Te
PMA
RXD[3:0]
RX_CTRL
RX_CLK
MUX / DMUX
1000BASE-T
Block
10BASE-Te
Block
100BASE-TX
PCS
TX_CTRL
TXD[3:0]
GTX_CLK
RGMII INTERFACE
Interrupt
MDC
MDIO
MGMT INTERFACE
1000BASE-T
PCS
Wake on
LAN
Echo cancellation
Crosstalk cancellation
ADC
Decode / Descramble
Equalization
Timing
Skew compensation
BLW
10000BASE-T
PMA
AutoNegotiation
100BASE-TX
PMD
Manchester
10 Mbps
PAM-5
17 Level PR Shaped
125 Msymbols/s
MLT-3
100 Mbps
DAC / ADC
SUBSYSTEM
TIMING
DRIVERS /
RECEIVERS
DAC / ADC
TIMING BLOCK
MAGNETICS
4-pair CAT-5 Cable
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8.3 Feature Description
8.3.1 WoL (Wake on LAN) Packet Detection
Wake on LAN provides a mechanism for bringing the DP83867 out of a low-power state using a special Ethernet
packet, called a Magic Packet. The DP83867 can be configured to generate an interrupt to wake up the MAC
when a qualifying packet is received. An option is also available to generate a signal on a GPIO when a
qualifying signal is received.
The Wake on LAN feature includes the following functionality
• Identification of magic packets in all supported speeds (1000BASE-T, 100BASE-TX, 10BASE-Te)
• Wakeup interrupt generation upon receiving a valid magic packet
• CRC checking of magic packets to prevent interrupt generation for invalid packets
In addition to the basic magic packet support, the DP83867 also supports:
• Magic packets that include secure-on password
• Pattern match – one configurable 64 byte pattern of that can wake up the MAC similar to magic packet
• Independent configuration for Wake on Broadcast and Unicast packet types.
8.3.1.1 Magic Packet Structure
When configured for Magic Packet mode, the DP83867 scans all incoming frames addressed to the node for a
specific data sequence. This sequence identifies the frame as a Magic Packet frame. It should be noted that the
Magic Packet should be byte aligned.
A Magic Packet frame must also meet the basic requirements for the LAN technology chosen, such as SOURCE
ADDRESS, DESTINATION ADDRESS (which may be the receiving station’s IEEE address or a BROADCAST
address), and CRC.
The specific Magic Packet sequence consists of 16 duplications of the IEEE address of this node, with no breaks
or interruptions, followed by secure-on password if security is enabled. This sequence can be located anywhere
within the packet, but must be preceded by a synchronization stream. The synchronization stream is defined as 6
bytes of FFh.
DEST (6 bytes)
SRC (6 bytes)
MISC (X bytes, X >= 0)
))« )) (6 bytes)
MAGIC pattern
DEST * 16
SecureOn Password (6 bytes)
Only if Secure-On is enabled
MISC (Y bytes, Y >= 0)
CRC (4 bytes)
Figure 14. Magic Packet Structure
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Feature Description (continued)
8.3.1.2 Magic Packet Example
The following is an example Magic Packet for a Destination Address of 11h 22h 33h 44h 55h 66h and a
SecureOn Password 2Ah 2Bh 2Ch 2Dh 2Eh 2Fh:
DESTINATION SOURCE MISC FF FF FF FF FF FF 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22
33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66
11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44
55 66 11 22 33 44 55 66 2A 2B 2C 2D 2E 2F MISC CRC
8.3.1.3 Wake on LAN Configuration and Status
Wake on LAN functionality is configured via the RXFCFG register (address 0x0134). Wake on LAN status is
reported in the RXFSTS register (address 0x0135).
8.3.2 Start of Frame Detect for IEEE 1588 Time Stamp
The DP83867 supports an IEEE 1588 indication pulse at the SFD (start frame delimiter) for the receive and
transmit paths. The pulse can be delivered to various pins. The pulse indicates the actual time the symbol is
presented on the lines (for transmit), or the first symbol received (for receive). The exact timing of the pulse can
be adjusted via register. Each increment of phase value is an 8ns step.
Figure 15. IEEE 1588 Message Timestamp Point
The SFD pulse output can be configured using the GPIO Mux Control registers, GPIO_MUX_CTRL1 (register
address 0x0171) and GPIO_MUX_CTRL2 (register address 0x0172). The RGZ devices support only register
GPIO_MUX_CTRL2 (address 0x172).
8.3.3 Clock Output
The DP83867 has several internal clocks, including the local reference clock, the Ethernet transmit clock, and the
Ethernet receive clock. An external crystal or oscillator provides the stimulus for the local reference clock. The
local reference clock acts as the central source for all clocking in the device.
The local reference clock is embedded into the transmit network packet traffic and is recovered from the network
packet traffic at the receiver node. The receive clock is recovered from the received Ethernet packet data stream
and is locked to the transmit clock in the partner.
Using the I/O Configuration register (address 0x0170), the DP83867 can be configured to output these internal
clocks via the CLK_OUT pin. By default, the output clock is synchronous to the XI oscillator / crystal input. Via
registers, the output clock can be configured to be synchronous to the receive data at the 125-MHz data rate or
at the divide by 5 rate of 25 MHz. It can also be configured to output the line driver transmit clock. When
operating in 1000Base-T mode, the output clock can be configured for any of the four transmit or receive
channels.
The output clock can be disabled using the CLK_O_DISABLE bit of the I/O Configuration register. It can also be
disabled by default using the Clock Out Disable strap. This strap is only available for the PAP devices. For more
information, see Strap Configuration.
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8.4 Device Functional Modes
8.4.1 MAC Interfaces
The DP83867 supports connection to an Ethernet MAC via the following interfaces: RGMII, GMII, and MII.
The RGMII Disable strap (RX_D6) determines the default state of the MAC interface. The RGMII Disable strap
corresponds to the RGMII Enable (bit 7) in the RGMIICTL register (address 0x0032). When RGMII mode is
disabled, the DP83867 operates in GMII mode.
RGMII ENABLE (Register 0x0032, bit 7)
DEVICE FUNCTIONAL MODE
0x1
RGMII
0x0
GMII
The initial strap value for the RGMII disable is also available in the Strap Configuration Status Register 1
(STRAP_STS1).
8.4.1.1 Reduced GMII (RGMII)
The Reduced Gigabit Media Independent Interface (RGMII) is designed to reduce the number of pins required to
interconnect the MAC and PHY (12 pins for RGMII relative to 24 pins for GMII). To accomplish this goal, the data
paths and all associated control signals are reduced and are multiplexed. Both rising and trailing edges of the
clock are used. For Gigabit operation the GTX_CLK and RX_CLK clocks are 125 MHz, and for 10 and 100 Mbps
operation the clock frequencies are 2.5 MHz and 25 MHz, respectively.
8.4.1.1.1 1000 Mbps Mode Operation
All RGMII signals are positive logic. The 8-bit data is multiplexed by taking advantage of both clock edges. The
lower 4 bits are latched on the positive clock edge and the upper 4 bits are latched on trailing clock edge. The
control signals are multiplexed into a single clock cycle using the same technique.
To reduce power consumption of RGMII interface, TXEN_ER and RXDV_ER are encoded in a manner that
minimizes transitions during normal network operation. This is done by following encoding method. Note that the
value of GMII_TX_ER and GMII_TX_EN are valid at the rising edge of the clock. In RGMII mode, GMII_TX_ER
is presented on TX_CTRL at the falling edge of the GTX_CLK clock. RX_CTRL coding is implemented the same
fashion.
When receiving a valid frame with no error, “RX_CTRL = True” is generated as a logic high on the rising edge of
RX_CLK and “RX_CTRL = False” is generated as a logic high at the falling edge of RX_CLK. When no frame is
being received, “RX_CTRL = False” is generated as a logic low on the rising edge of RX_CLK and “RX_CTRL =
False” is generated as a logic low on the falling edge of RX_CLK.
TX_CTRL is treated in a similar manner. During normal frame transmission, the signal stays at a logic high for
both edges of GTX_CLK and during the period between frames where no error is indicated, the signal stays low
for both edges.
8.4.1.1.2 1000 Mbps Mode Timing
The DP83867 provides configurable clock skew for the GTX_CLK and RX_CLK to optimize timing across the
interface. The transmit and receive paths can be optimized independently. Both the transmit and receive path
support 16 programmable RGMII delay modes via register configuration.
The timing paths can either be configured for Aligned mode or Shift mode. In Aligned mode, no clock skew is
introduced. In Shift mode, the clock skew can be introduced in 0.25 ns increments (via register configuration).
Configuration of the Aligned mode or Shift mode is accomplished via the RGMII Control Register (RGMIICTL),
address 0x0032. In Shift mode, the clock skew can be adjusted using the RGMII Delay Control Register
(RGMIIDCTL), address 0x0086.
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8.4.1.1.3 10/100 Mbps Mode
When the RGMII interface is operating in the 100 Mbps mode, the Ethernet Media Independent Interface (MII) is
implemented by reducing the clock rate to 25 MHz. For 10 Mbps operation, the clock is further reduced to 2.5
MHz. In the RGMII 10/100 mode, the transmit clock RGMII TX_CLK is generated by the MAC and the receive
clock RGMII RX_CLK is generated by the PHY. During the packet receiving operation, the RGMII RX_CLK may
be stretched on either the positive or negative pulse to accommodate the transition from the free running clock to
a data synchronous clock domain. When the speed of the PHY changes, a similar stretching of the positive or
negative pulses is allowed. No glitch is allowed on the clock signals during clock speed transitions.
This interface will operate at 10 and 100 Mbps speeds the same way it does at 1000 Mbps mode with the
exception that the data may be duplicated on the falling edge of the appropriate clock.
The MAC will hold RGMII TX_CLK low until it has ensured that it is operating at the same speed as the PHY.
Figure 16. RGMII Connections
8.4.1.2 Gigabit MII (GMII)
The Gigabit Media Independent Interface (GMII) is the IEEE defined interface for use between an Ethernet PHY
and an Ethernet MAC. GMII is available on the PAP devices only. The purpose of GMII is to make various
physical media transparent to the MAC layer. The GMII Interface accepts either GMII or MII data, control and
status signals and routes them either to the 1000BASE-T, 100BASE-TX, or 10BASE-Te modules, respectively.
The GMII interface has the following characteristics:
• Supports 10/100/1000 Mbps operation
• Data and delimiters are synchronous to clock references
• Provides independent 8-bit wide transmit and receive data paths
• Provides a simple management interface
• Provides for Full-Duplex operation
The GMII interface is defined in IEEE 802.3 Clause 35. In each direction of data transfer, there are Data (an
eight-bit bundle), Delimiter, Error, and Clock signals. GMII signals are defined such that an implementation may
multiplex most GMII signals with the similar PCS service interface defined in IEEE 802.3 Clause 22. Two media
status signals are provided. One indicates the presence of carrier (CRS), and the other indicates the occurrence
of a collision (COL). The MII signal names have been retained and the functions of most signals are the same,
but additional valid combinations of signals have been defined for 1000 Mbps operation.
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The connection diagram for GMII is shown in Figure 17.
Figure 17. GMII Connections
8.4.1.3 Media Independent Interface (MII)
MII connections are used for 10/100 data. MII is compatible with GMII and will be used for 10/100 data when the
device is configured for GMII. MII is available on PAP devices only.
The DP83867 incorporates the Media Independent Interface (MII) as specified in Clause 22 of the IEEE 802.3
standard. This interface may be used to connect PHY devices to a MAC in 10/100 Mbps systems. This section
describes the nibble wide MII data interface.
The nibble wide MII data interface consists of a receive bus and a transmit bus each with control signals to
facilitate data transfer between the PHY and the upper layer (MAC).
8.4.1.3.1 Nibble-wide MII Data Interface
Clause 22 of the IEEE 802.3 specification defines the Media Independent Interface. This interface includes a
dedicated receive bus and a dedicated transmit bus. These two data buses, along with various control and status
signals, allow for the simultaneous exchange of data between the DP83867 and the upper layer agent (MAC).
The receive interface consists of a nibble wide data bus RXD[3:0], a receive error signal RX_ER, a receive data
valid flag RX_DV, and a receive clock RX_CLK for synchronous transfer of the data. The receive clock operates
at either 2.5 MHz to support 10 Mbps operation modes or at 25 MHz to support 100 Mbps operational modes.
The transmit interface consists of a nibble wide data bus TXD[3:0], a transmit enable control signal TX_EN, and
a transmit clock TX_CLK which runs at either 2.5 MHz or 25 MHz. Additionally, the MII includes the carrier sense
signal CRS, as well as a collision detect signal COL. The CRS signal asserts to indicate the reception of data
from the network or as a function of transmit data in Half-Duplex mode. The COL signal asserts as an indication
of a collision which can occur during Half-Duplex operation when both a transmit and receive operation occur
simultaneously.
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8.4.1.3.2 Collision Detect
When in Half-Duplex mode, a 10BASE-Te or 100BASE-TX collision is detected when the receive and transmit
channels are active simultaneously. Collisions are reported by the COL signal on the MII.
The COL signal remains set for the duration of the collision. If the PHY is receiving when a collision is detected, it
is reported immediately (through the COL pin).
Collision is not indicated during Full-Duplex operation.
8.4.1.3.3 Carrier Sense
In 10 Mbps operation, Carrier Sense (CRS) is asserted due to receive activity once valid data is detected via the
squelch function. During 100 Mbps operation CRS is asserted when a valid link (SD) and two non-contiguous
zeros are detected on the line.
For 10 or 100 Mbps Half-Duplex operation, CRS is asserted during either packet transmission or reception.
For 10 or 100 Mbps Full-Duplex operation, CRS is asserted only due to receive activity.
CRS is deasserted following an end of packet.
The connection diagram for MII is shown in Figure 18.
Figure 18. MII Connections
8.4.2 Serial Management Interface
The Serial Management Interface (SMI), provides access to the DP83867 internal register space for status
information and configuration. The SMI is compatible with IEEE 802.3-2002 clause 22. The implemented register
set consists of the registers required by the IEEE 802.3, plus several others to provide additional visibility and
controllability of the DP83867 device.
The SMI includes the MDC management clock input and the management MDIO data pin. The MDC clock is
sourced by the external management entity, also called Station (STA), and can run at a maximum clock rate of
25 MHz. MDC is not expected to be continuous, and can be turned off by the external management entity when
the bus is idle.
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The MDIO is sourced by the external management entity and by the PHY. The data on the MDIO pin is latched
on the rising edge of the MDC clock. The MDIO pin requires a pull-up resistor (2.2 kΩ) which, during IDLE and
turnaround, pulls MDIO high.
Up to 32 PHYs can share a common SMI bus. To distinguish between the PHYs, a 5-bit address is used. During
power-up reset, the DP83867 latches the PHY_ADD configuration pins to determine its address.
The management entity must not start an SMI transaction in the first cycle after power-up reset. To maintain valid
operation, the SMI bus must remain inactive at least one MDC cycle after hard reset is deasserted. In normal
MDIO transactions, the register address is taken directly from the management-frame reg_addr field, thus
allowing direct access to 32 16-bit registers (including those defined in IEEE 802.3 and vendor specific). The
data field is used for both reading and writing. The Start code is indicated by a <01> pattern. This pattern makes
sure that the MDIO line transitions from the default idle line state. Turnaround is defined as an idle bit time
inserted between the Register Address field and the Data field. To avoid contention during a read transaction, no
device may actively drive the MDIO signal during the first bit of Turnaround. The addressed DP83867 drives the
MDIO with a zero for the second bit of turnaround and follows this with the required data. Figure 19 shows the
timing relationship between MDC and the MDIO as driven/received by the Station (STA) and the DP83867 (PHY)
for a typical register read access.
For write transactions, the station-management entity writes data to the addressed DP83867, thus eliminating the
requirement for MDIO Turnaround. The Turnaround time is filled by the management entity by inserting <10>.
Figure 19 shows the timing relationship for a typical MII register write access. The frame structure and general
read/write transactions are shown in Table 3, Figure 19, and Figure 20.
Table 3. Typical MDIO Frame Format
Typical MDIO Frame Format
<idle><start><op code><device addr><reg addr><turnaround><data<<idle>
Read Operation
<idle><01><10><AAAA><RRRR><Z0><xxxx xxxx xxxx xxxx><idle>
Write Operation
<idle><01<01><AAAA><RRRR><10><xxxx xxxx xxxx xxxx><idle>
Figure 19. Typical MDC/MDIO Read Operation
Figure 20. Typical MDC/MDIO Write Operation
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8.4.2.1 Extended Address Space Access
The DP83867 SMI function supports read/write access to the extended register set using registers REGCR
(0x000Dh) and ADDAR (0x000Eh) and the MDIO Manageable Device (MMD) indirect method defined in IEEE
802.3ah Draft for clause 22 for accessing the clause 45 extended register set.
The standard register set, MDIO registers 0 to 31, is accessed using the normal direct-MDIO access or the
indirect method, except for register REGCR (0x000Dh) and ADDAR (0x000Eh) which is accessed only using the
normal MDIO transaction. The SMI function will ignore indirect accesses to these registers.
REGCR (0x000Dh) is the MDIO Manageable MMD access control. In general, register REGCR(4:0) is the device
address DEVAD that directs any accesses of ADDAR (0x000Eh) register to the appropriate MMD.
The DP83867 supports one MMD device address. The vendor-specific device address DEVAD[4:0] = "11111" is
used for general MMD register accesses.
All accesses through registers REGCR and ADDAR must use the correct DEVAD. Transactions with other
DEVAD are ignored. REGCR[15:14] holds the access function: address (00), data with no post increment (01),
data with post increment on read and writes (10) and data with post increment on writes only (11).
• ADDAR is the address/data MMD register. ADDAR is used in conjunction with REGCR to provide the access
to the extended register set. If register REGCR[15:1] is 00, then ADDAR holds the address of the extended
address space register. Otherwise, ADDAR holds the data as indicated by the contents of its address
register. When REGCR[15:14] is set to 00, accesses to register ADDAR modify the extended register set
address register. This address register must always be initialized in order to access any of the registers within
the extended register set.
• When REGCR[15:14] is set to 01, accesses to register ADDAR access the register within the extended
register set selected by the value in the address register.
• When REGCR[15:14] is set to 10, access to register ADDAR access the register within the extended register
set selected by the value in the address register. After that access is complete, for both reads and writes, the
value in the address register is incremented.
• When REGCR[15:14] is set to 11, access to register ADDAR access the register within the extended register
set selected by the value in the address register. After that access is complete, for write accesses only, the
value in the address register is incremented. For read accesses, the value of the address register remains
unchanged.
The following sections describe how to perform operations on the extended register set using register REGCR
and ADDAR. The descriptions use the device address for general MMD register accesses (DEVAD[4:0] =
"11111").
8.4.2.2 Write Address Operation
1. Write the value 0x001F (address function field = 00, DEVAD = 31) to register REGCR.
2. Write the desired register address to register ADDAR.
Subsequent writes to register ADDAR (step 2) continue to write the address register.
8.4.2.3 Read Address Operation
To read the address register:
1. Write the value 0x001F (address function field = 00, DEVAD = 31) to register REGCR.
2. Read the register address from register ADDAR.
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8.4.2.4 Write (No Post Increment) Operation
To
1.
2.
3.
4.
write a register in the extended register set:
Write the value 0x001F (address function field = 00, DEVAD = 31) to register REGCR.
Write the desired register address to register ADDAR.
Write the value 0x401F (data, no post increment function field = 01, DEVAD = 31) to register REGCR.
Write the content of the desired extended register set register to register ADDAR.
Subsequent writes to register ADDAR (step 4) continue to rewrite the register selected by the value in the
address register.
Note: steps (1) and (2) can be skipped if the address register was previously configured.
8.4.2.5 Read (No Post Increment) Operation
To
1.
2.
3.
4.
read a register in the extended register set:
Write the value 0x001F (address function field = 00, DEVAD = 31) to register REGCR.
Write the desired register address to register ADDAR.
Write the value 0x401F (data, no post increment function field = 01, DEVAD = 31) to register REGCR.
Read the content of the desired extended register set register to register ADDAR.
Subsequent reads from register ADDAR (step 4) continue reading the register selected by the value in the
address register.
Note: steps (1) and (2) can be skipped if the address register was previously configured.
8.4.2.6 Write (Post Increment) Operation
1. Write the value 0x001F (address function field = 00, DEVAD = 31) to register REGCR.
2. Write the register address from register ADDAR.
3. Write the value 0x801F (data, post increment on reads and writes function field = 10, DEVAD = 31) or the
value 0xC01F (data, post increment on writes function field = 11. DEVAD = 31) to register REGCR.
4. Write the content of the desired extended register set register to register ADDAR.
Subsequent writes to register ADDAR (step 4) write the next higher addressed data register selected by the
value of the address register; the address register is incremented after each access.
8.4.2.7 Read (Post Increment) Operation
To read a register in the extended register set and automatically increment the address register to the next
higher value following the write operation:
1. Write the value 0x001F (address function field = 00, DEVAD = 31) to register REGCR.
2. Write the desired register address to register ADDAR.
3. Write the value 0x801F (data, post increment on reads and writes function field = 10, DEVAD = 31) to
register REGCR.
4. Read the content of the desired extended register set register to register ADDAR.
Subsequent reads to register ADDAR (step 4) read the next higher addressed data register selected by the value
of the address register; the address register is incremented after each access.
8.4.2.8 Example of Read Operation Using Indirect Register Access
Read register 0x0170.
1. Write register 0x0D to value 0x001F.
2. Write register 0x0E to value 0x0170
3. Write register 0x0D to value 0x401F.
4. Read register 0x0E.
The expected default value is 0x0C10.
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8.4.2.9 Example of Write Operation Using Indirect Register Access
Write register 0x0170 to value 0x0C50.
1. Write register 0x0D to value 0x001F.
2. Write register 0x0E to value 0x0170
3. Write register 0x0D to value 0x401F.
4. Write register 0x0E to value 0x0C50.
This write will disable the output clock on the CLK_OUT pin.
8.4.3 Auto-Negotiation
All 1000BASE-T PHYs are required to support Auto-Negotiation. The Auto-Negotiation function in 1000BASE-T
has three primary purposes:
• Auto-Negotiation of Speed & Duplex Selection
• Auto-Negotiation of Master/Slave Resolution
• Auto-Negotiation of Pause/Asymetrical Pause Resolution
8.4.3.1 Speed/Duplex Selection - Priority Resolution
The Auto-Negotiation function provides a mechanism for exchanging configuration information between the two
ends of a link segment. This mechanism is implemented by exchanging Fast Link Pulses (FLP). FLPs are burst
pulses that provide the signalling used to communicate the abilities between two devices at each end of a link
segment. For further details regarding Auto-Negotiation, refer to Clause 28 of the IEEE 802.3 specification. The
DP83867 supports 1000BASE-T, 100BASE-TX, and 1000BASE-T modes of operation. The process of AutoNegotiation ensures that the highest performance protocol is selected (i.e., priority resolution) based on the
advertised abilities of the Link Partner and the local device.
8.4.3.2 Master/Slave Resolution
If 1000BASE-T mode is selected during the priority resolution, the second goal of Auto-Negotiation is to resolve
Master/ Slave configuration. The Master mode priority is given to the device that supports multiport nodes, such
as switches and repeaters. Single node devices such as DTE or NIC card takes lower Master mode priority.
8.4.3.3 Pause and Asymmetrical Pause Resolution
When Full-Duplex operation is selected during priority resolution, the Auto-Negotiation also determines the Flow
Control capabilities of the two link partners. Flow control was originally introduced to force a busy station’s Link
Partner to stop transmitting data in Full-Duplex operation. Unlike Half-Duplex mode of operation where a link
partner could be forced to back off by simply generating collisions, the Full-Duplex operation needed a
mechanism to slow down transmission from a link partner in the event that the receiving station’s buffers are
becoming full. A new MAC control layer was added to handle the generation and reception of Pause Frames.
Each MAC Controller has to advertise whether it is capable of processing Pause Frames. In addition, the MAC
Controller advertises if Pause frames can be handled in both directions, i.e. receive and transmit. If the MAC
Controller only generates Pause frames but does not respond to Pause frames generated by a link partner, it is
called Asymmetrical Pause. The advertisement of Pause and Asymmetrical Pause capabilities is enabled by
writing ‘1’ to bits 10 and 11 of ANAR (register address 0x0004). The link partner’s Pause capabilities is stored in
ANLPAR (register address 0x0005) bits 10 and 11. The MAC Controller has to read from ANLPAR to determine
which Pause mode to operate. The PHY layer is not involved in Pause resolution other than simply advertising
and reporting of Pause capabilities.
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8.4.3.4 Next Page Support
The DP83867 supports the Auto-Negotiation Next Page protocol as required by IEEE 802.3 clause 28.2.4.1.7.
The ANNPTR 0x07 allows for the configuration and transmission of the Next Page. Refer to clause 28 of the
IEEE 802.3 standard for detailed information regarding the Auto-Negotiation Next Page function.
8.4.3.5 Parallel Detection
The DP83867 supports the Parallel Detection function as defined in the IEEE 802.3 specification. Parallel
Detection requires the 10/100 Mbps receivers to monitor the receive signal and report link status to the AutoNegotiation function. Auto-Negotiation uses this information to configure the correct technology in the event that
the Link Partner does not support Auto-Negotiation, yet is transmitting link signals that the 10BASE-Te or
100BASE-X PMA recognize as valid link signals.
If the DP83867 completes Auto-Negotiation as a result of Parallel Detection, without Next Page operation, bits 5
and 7 of ANLPAR (register address 0x0005) will be set to reflect the mode of operation present in the Link
Partner. Note that bits 4:0 of the ANLPAR will also be set to 00001 based on a successful parallel detection to
indicate a valid 802.3 selector field. Software may determine that the negotiation is completed via Parallel
Detection by reading ‘0’ in bit 0 of ANER (register address 0x006) after Auto-Negotiation Complete, bit 5 of
BMSR (register address 0x0001), is set. If the PHY is configured for parallel detect mode and any condition other
than a good link occurs, the parallel detect fault, bit 4 of ANER (register address 0x06), will set.
8.4.3.6 Restart Auto-Negotiation
If a link is established by successful Auto-Negotiation and then lost, the Auto-Negotiation process will resume to
determine the configuration for the link. This function ensures that a link can be re-established if the cable
becomes disconnected and re-connected. After Auto-Negotiation is completed, it may be restarted at any time by
writing ‘1’ to bit 9 of the BMCR (register address 0x0000). A restart Auto-Negotiation request from any entity,
such as a management agent, will cause DP83867 to halt data transmission or link pulse activity until the
break_link_timer expires. Consequently, the Link Partner will go into link fail mode and the resume AutoNegotiation. The DP83867 will resume Auto-Negotiation after the break_link_timer has expired by transmitting
FLP (Fast Link Pulse) bursts.
8.4.3.7 Enabling Auto-Negotiation via Software
If the DP83867 is initialized upon power-up with Auto-Negotiation disabled and the user may desire to restart
Auto-Negotiation, this could be accomplished by software access. Bit 12 of BMCR (register address 0x00) should
be cleared and then set for Auto-Negotiation operation to take place.
8.4.3.8 Auto-Negotiation Complete Time
Parallel detection and Auto-Negotiation typically take 2-3 seconds to complete. In addition, Auto-Negotiation with
next page exchange takes approximately 2-3 seconds to complete, depending on the number of next pages
exchanged. Refer to Clause 28 of the IEEE 802.3 standard for a full description of the individual timers related to
Auto-Negotiation
8.4.3.9 Auto-MDIX Resolution
The DP83867 can determine if a “straight” or “crossover” cable is used to connect to the link partner. It can
automatically re-assign channel A and B to establish link with the link partner, (and channel C and D in
1000BASE-T mode). Auto-MDIX resolution precedes the actual Auto-Negotiation process that involves exchange
of FLPs to advertise capabilities. Automatic MDI/MDIX is described in IEEE 802.3 Clause 40, section 40.8.2. It is
not a required implementation for 10BASE-Te and 100BASE-TX.
Auto-MDIX can be enabled or disabled by strap, using the AMDIX Disable strap, or by register configuration,
using bit 6 of the PHYCR register (address 0x0010). When Auto-MDIX is disabled, the PMA is forced to either
MDI (“straight”) or MDIX (“crossed”). Manual configuration of MDI or MDIX can also be accomplished by strap,
using the Force MDI/X strap, or by register configuration, using bit 5 of the PHYCR register.
For 10/100, Auto-MDIX is independent of Auto-Negotiation. Auto-MDIX works in both Auto-Negotiation mode and
manual forced speed mode.
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8.4.4 Loopback Mode
There are several options for Loopback that test and verify various functional blocks within the PHY. Enabling
loopback mode allows in-circuit testing of the digital and analog data paths. Generally, the DP83867 may be
configured to one of the Near-end loopback modes or to the Far-end (reverse) loopback. MII Loopback is
configured using the BMCR (register address 0x0000). All other loopback modes are enabled using the BISCR
(register address 0x16). Except where otherwise noted, loopback modes are supported for all speeds
(10/100/1000) and all MAC interfaces (RGMII and GMII).
The availability of Loopback depends on the operational mode of the PHY. The Link Status in these loopback
modes is also affected by the operational mode. The following table lists out the availability of Loopback Modes
and their corresponding Link Status indication.
Table 4. Loopback Availability
Loopback Mode
MAC Interface
1000M
100M
10M
Availability Link Status Availability Link Status Availability Link Status
MII
GMII/RGMII
Yes
No
Yes
No
Yes
PCS
GMII/RGMII
Yes
No
Yes
Yes
No
No
No
Digital
GMII/RGMII
Yes
Yes
Yes
Yes
Yes
Yes
Analog
GMII/RGMII
Yes
Yes
Yes
Yes
Yes
Yes
External
GMII/RGMII
No
No
Yes
Yes
Yes
Yes
8.4.4.1 Near-End Loopback
Near-end loopback provides the ability to loop the transmitted data back to the receiver via the digital or analog
circuitry. The point at which the signal is looped back is selected using loopback control bits with several options
being provided.
When configuring loopback modes, the Loopback Configuration Register (LOOPCR), address 0x00FE, should be
set to 0xE720.
To maintain the desired operating mode, Auto-Negotiation should be disabled before selecting the Near-End
Loopback mode. This constraint does not apply for external-loopback mode.
Auto-MDIX should be disabled before selecting the Near-End Loopback mode. MDI or MDIX configuration should
be manually configured.
8.4.4.1.1 MII Loopback
MII Loopback is the shallowest loop through the PHY. It is a useful test mode to validate communications
between the MAC and the PHY. While in MII Loopback mode the data is looped back, and can also be
configured via register to transmit onto the media.
8.4.4.1.2 PCS Loopback
PCS Loopback occurs in the PCS layer of the PHY. No signal processing is performed when using PCS
Loopback.
8.4.4.1.3 Digital Loopback
Digital Loopback includes the entire digital transmit – receive path. Data is looped back prior to the analog
circuitry.
8.4.4.1.4 Analog Loopback
Analog Loopback includes the entire analog transmit-receive path.
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8.4.4.2 External Loopback
When operating in 10BASE-Te or 100Base-T mode, signals can be looped back at the RJ-45 connector by wiring
the transmit pins to the receive pins. Due to the nature of the signaling in 1000Base-T mode, this type of external
loopback is not supported. Analog Loopback provides a way to loop data back in the analog circuitry when
operating in 1000Base-T mode. For proper operation in Analog Loopback mode, attach 100-Ω terminations to the
RJ45 connector.
8.4.4.3 Far-End (Reverse) Loopback
Far-end (Reverse) loopback is a special test mode to allow testing the PHY from the link-partner side. In this
mode, data that is received from the link partner passes through the PHY's receiver, is looped back at the MAC
interface and is transmitted back to the link partner. While in Reverse Loopback mode, all data signals that come
from the MAC are ignored. Through register configuration, data can also be transmitted onto the MAC Interface.
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8.4.5 BIST Configuration
The device incorporates an internal PRBS Built-in Self Test (BIST) circuit to accommodate in-circuit testing or
diagnostics. The BIST circuit can be used to test the integrity of the transmit and receive data paths. The BIST
can be performed using both internal loopback (digital or analog) or external loopback using a cable fixture. The
BIST simulates pseudo-random data transfer scenarios in format of real packets and Inter-Packet Gap (IPG) on
the lines. The BIST allows full control of the packet lengths and of the IPG.
The BIST is implemented with independent transmit and receive paths, with the transmit block generating a
continuous stream of a pseudo-random sequence. The device generates a 15-bit pseudo-random sequence for
the BIST. The received data is compared to the generated pseudo-random data by the BIST Linear Feedback
Shift Register (LFSR) to determine the BIST pass/fail status. The number of error bytes that the PRBS checker
received is stored in the BICSR2 register (0x0072). The status of whether the PRBS checker is locked to the
incoming receive bit stream, whether the PRBS has lost sync, and whether the packet generator is busy, can be
read from the STS2 register (0x0017h). While the lock and sync indications are required to identify the beginning
of proper data reception, for any link failures or data corruption, the best indication is the contents of the error
counter in the BICSR2 register (0x0072). The number of received bytes are stored in BICSR1 (0x0071).
The PRBS test can be put in a continuous mode by using bit 14 of the BISCR register (0x0016h). In continuous
mode, when one of the PRBS counters reaches the maximum value, the counter starts counting from zero again.
Packet transmission can be configured for one of two types, 64 and 1518 bytes, through register bit 13 of the
BISCR register (0x0016).
8.4.6 Cable Diagnostics
With the vast deployment of Ethernet devices, the need for reliable, comprehensive and user-friendly cable
diagnostic tool is more important than ever. The wide variety of cables, topologies, and connectors deployed
results in the need to non-intrusively identify and report cable faults. The TI cable-diagnostic unit provides
extensive information about cable integrity. The DP83867 offers the following capabilities in its Cable Diagnostic
tools kit:
1. Time Domain Reflectometry (TDR)
2. Active Link Cable Diagnostic (ALCD)
8.4.6.1 TDR
The DP83867 uses Time Domain Reflectometry (TDR) to determine the quality of the cables, connectors, and
terminations in addition to estimating the cable length. Some of the possible problems that can be diagnosed
include opens, shorts, cable impedance mismatch, bad connectors, termination mismatches, cross faults, cross
shorts and any other discontinuities along the cable.
The DP83867 transmits a test pulse of known amplitude (1 V or 2.5 V) down each of the two pairs of an attached
cable. The transmitted signal continues down the cable and reflects from each cable imperfection, fault, bad
connector, and from the end of the cable itself. After the pulse transmission, the DP83867 measures the return
time and amplitude of all these reflected pulses. This technique enables measuring the distance and magnitude
(impedance) of non-terminated cables (open or short), discontinuities (bad connectors), improperly-terminated
cables, and crossed pairs wires with ±1m accuracy.
The DP83867 also uses data averaging to reduce noise and improve accuracy. The DP83867 can record up to
five reflections within the tested pair. If more than 5 reflections are recorded, the DP83867 saves the first 5 of
them. If a cross fault is detected, the TDR saves the first location of the cross fault and up to 4 reflections in the
tested channel. The DP83867 TDR can measure cables beyond 100m in length.
For all TDR measurements, the transformation between time of arrival and physical distance is done by the
external host using minor computations (such as multiplication, addition and lookup tables). The host must know
the expected propagation delay of the cable, which depends, among other things, on the cable category (for
example, CAT5, CAT5e, or CAT6).
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TDR measurement is allowed in the DP83867 in the following scenarios:
• While Link partner is disconnected – cable is unplugged at the other side
• Link partner is connected but remains “quiet” (for example, in power down mode)
• TDR could be automatically activated when the link fails or is dropped by setting bit 7 of register 0x0009
(CFG1). The results of the TDR run after the link fails will be saved in the TDR registers.
Software could read these registers at any time to apply post processing on the TDR results. This mode is
designed for cases in which the link dropped due to cable disconnections, in which case, after link failure, the line
will be quiet to allow a proper function of the TDR.
8.4.6.2 ALCD
The DP83867 also supports Active Link Cable Diagnostic (ALCD). The ALCD offers a passive method to
estimate the cable length during active link. The ALCD uses passive digital signal processing based on adapted
data, thus enabling measurement of cable length with an active link partner. The ALCD Cable length
measurement accuracy is ±5m for the pair used in the Rx path (due to the passive nature of the test, only the
receive path is measured).
8.4.6.3 Energy Detect
The energy-detector module provides signal-strength indication in various scenarios. Because it is based on an
IIR filter, this robust energy detector has excellent reaction time and reliability. The filter output is compared to
predefined thresholds in order to decide the presence or absence of an incoming signal. The energy detector
also implements hysteresis to avoid jittering in signal-detect indication. In addition it has fully-programmable
thresholds and listening-time periods, enabling shortening of the reaction time if required.
8.4.6.4 Fast Link Drop
The DP83867 includes advanced link-down capabilities that support various real-time applications. The link down
mechanism is configurable and includes enhanced modes that allow extremely fast reaction times to link-drops.
First Link Failure
Occurrence
Valid Data
LOW Quality Data / Link Loss
Signal
Link Drop
T1
Link Loss
Indication
(Link LED)
Figure 21. Fast Link Drop Mechanism
As described in Figure 21, the link loss mechanism is based on a time window search period, in which the signal
behavior is monitored. The T1 window is set by default to reduce typical link-drops to less than 1ms in 100M and
0.5ms in 1000M mode.
The DP83867 supports enhanced modes that shorten the window called Fast Link Down mode. In this mode the
T1 window is shortened significantly, in most cases less than 10 μs. In this period of time there are several
criteria allowed to generate link loss event and drop the link:
1. Loss of descrambler sync
2. Receive errors
3. MLT3 errors
4. Mean Squared Error (MSE)
5. Energy loss
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The Fast Link Down functionality allows the use of each of these options separately or in any combination. Note
that since this mode enables extremely quick reaction time, it is more exposed to temporary bad link quality
scenarios.
100M Fast Link Down based on loss of energy can be configured by strap. Other modes require register
configuration.
8.4.6.5 Fast Link Detect
Several advanced modes are available for fast link establishment. Unlike the Auto-Negotiation and Auto-MDIX
mechanisms defined by the IEEE 802.3 specification, these modes are specific to the DP83867. Care must be
taken when implementing these modes. For best operation, it is recommended that these modes be
implemented with a DP83867 on both ends of the link.
These advanced link and crossover modes depend on the speed selected for the link. Some modes are intended
for use in 1000Base-T operation. Others are intended for use in 100Base-TX operation.
Fast Link Detect functionality can be configured using the Configuration Register 3 (CFG3), address 0x001E.
8.4.6.6 Speed Optimization
Speed optimization, also known as link downshift, enables fallback to 100M operation after multiple consecutive
failed attempts at Gigabit link establishment. Such a case could occur if cabling with only four wires (two twisted
pairs) were connected instead of the standard cabling with eight wires (four twisted pairs).
The number of failed link attempts before falling back to 100M operation is configurable. By default, four failed
link attempts are required before falling back to 100M.
In enhanced mode, fallback to 100M can occur after one failed link attempt if energy is not detected on the C and
D channels. Speed optimization also supports fallback to 10M if link establishment fails in Gigabit and in 100M
mode.
Speed optimization can be enabled via strap or via register configuration.
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8.4.6.7 Mirror Mode
In some multiport applications, RJ-45 ports may be mirrored relative to one another. This mirroring can require
crossing board traces. The DP83867 can resolve this issue by implementing mirroring of the ports inside the
device.
In 10/100 operation, the mapping of the port mirroring is:
MDI MODE
MIRROR PORT CONFIGURATION
MDI
A→D
B→C
A→D
MDIX
B→C
In Gigabit operation, the mapping of the port mirroring is:
MDI MODE
MIRROR PORT CONFIGURATION
MDI or MDIX
A→D
B→C
C→B
D→A
Mirror mode can be enabled via strap or via register configuration using the Port Mirror Enable bit in the CFG4
register (address 0x0031).
8.4.6.8 Interrupt
The DP83867 can be configured to generate an interrupt when changes of internal status occur. The interrupt
allows a MAC to act upon the status in the PHY without polling the PHY registers. The interrupt source can be
selected through the interrrupt registers, MICR (register address 0x0012) and ISR (register address 0x0013).
8.4.6.9 IEEE 802.3 Test Modes
IEEE 802.3 specification for 1000BASE-T requires that the PHY layer be able to generate certain well defined
test patterns on TX outputs. Clause 40 section 40.6.1.1.2 “Test Modes” describes these tests in detail. There are
four test modes as well as the normal operation mode. These modes can be selected by writing to the CFG1
register (address 0x0009).
See IEEE 802.3 section 40.6.1.1.2 “Test modes” for more information on the nature of the test modes. The
DP83867 provides a test clock synchronous to the IEEE test patterns. The test patterns are output on the MDI
pins of the device and the transmit clock is output on the CLK_OUT pin.
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8.5 Programming
8.5.1 Strap Configuration
The DP83867 uses many of the functional pins as strap options to place the device into specific modes of
operation. The values of these pins are sampled at power up or hard reset. During software resets, the strap
options are internally reloaded from the values sampled at power up or hard reset. The strap option pin
assignments are defined below. The functional pin name is indicated in parentheses.
The strap pins supported are 4-level straps, which are described in greater detail below.
NOTE
Since strap pins may have alternate functions after reset is deasserted, they should not be
connected directly to VDD or GND.
Configuration of the device may be done via the 4-level strap pins or via the management register interface. A
pullup resistor and a pulldown resistor of suggested values may be used to set the voltage ratio of the 4-level
strap pin input and the supply to select one of the possible selected modes.
The MAC interface pins must support I/O voltages of 3.3 V, 2.5 V, and 1.8 V. As the strap inputs will be
implemented on these pins, the straps must also support operation at 3.3-V, 2.5-V, and 1.8-V supplies.
The device should feature 4-level strap pins, each supporting at least 4 selectable options.
VDDIO
DP83867
Rhi
V
STRAP
Rlo
9k
±25%
Figure 22. Strap Circuit
Table 5. 4-Level Strap Resistor Ratios
MODE
TARGET VOLTAGE
Vmin (V)
Vtyp (V)
Vmax (V)
IDEAL Rhi (kΩ)
IDEAL Rlo (kΩ)
1
0
0
0.098 × VDDIO
OPEN
OPEN
2
0.140 × VDDIO
0.165 × VDDIO
0.191 × VDDIO
10
2.49
3
0.225 × VDDIO
0.255 × VDDIO
0.284 × VDDIO
5.76
2.49
4
0.694 × VDDIO
0.783 × VDDIO
0.888 × VDDIO
2.49
OPEN
All straps have a 9kΩ ±25% internal pull down resistor. The voltage at strap pins should be between the Vmin
and Vmax mentioned in the 'Target Voltage' column in the table above. Strap resistors with 1% tolerance are
recommended.
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The following tables describes the DP83867 configuration straps:
Table 6. 4-Level Strap Pins
PIN NAME
64 QFP PIN #
48 QFN PIN #
DEFAULT
RX_D0
44
33
[00]
RX_D2
RX_D4
RX_D5
RX_D6
RX_D7
RX_DV/RX_CTRL
46
35
48
[00]
49
[00]
50
[00]
51
53
[00]
[00]
38
[0]
(Straps Required)
CRS
56
[0]
STRAP FUNCTION
MODE
PHY_ADD1
PHY_ADD0
1
0
0
2
0
1
3
1
0
4
1
1
MODE
PHY_ADD3
PHY_ADD2
1
0
0
2
0
1
3
1
0
4
1
1
MODE
ANEG_SEL1
PHY_ADD4
1
0
0
2
0
1
3
1
0
4
1
1
MODE
Force MDI/X
Half-Duplex
Enable (FD/HD)
1
0
0
2
0
1
3
1
0
4
1
1
MODE
RGMII Disable
AMDIX Disable
1
0
0
2
0
1
3
1
0
4
1
1
MODE
Speed
Optimization
Enable
Clock Out Disable
1
0
0
2
0
1
3
1
0
4
1
1
MODE
Autoneg Disable
1
N/A
2
N/A
3
0
4
1
MODE
Fast Link Detect
(FLD)
1
0
2
1
3
N/A
4
N/A
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Table 6. 4-Level Strap Pins (continued)
PIN NAME
64 QFP PIN #
LED_2 (1)
LED_1 (RGZ)
LED_1 (PAP)
LED_0
GPIO_0
48
DEFAULT
45
[00]
46
62
63
(1)
GPIO_1
(1)
48 QFN PIN #
[00]
[0]
47
39
40
[0]
[00]
[00]
STRAP FUNCTION
MODE
RGMII Clock
Skew TX[1]
RGMII Clock
Skew TX[0]
1
0
0
2
0
1
3
1
0
4
1
1
MODE
ANEG_SEL
RGMII Clock
Skew TX[2]
1
0
0
2
0
1
3
1
0
1
4
1
MODE
ANEG_SEL0
1
0
2
0
3
1
4
1
MODE
Mirror Enable
1
0
2
N/A
3
1
4
N/A
MODE
RGMII Clock
Skew RX[0]
1
0
2
Not Applicable
3
1
4
Not Applicable
MODE
RGMII Clock
Skew RX[2]
RGMII Clock
Skew RX[1]
1
0
0
2
0
1
3
1
0
4
1
1
NOTE: RGMII TX and RX DLL Skew straps are only available on RGZ devices.
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NOTE
Note: Strap modes 1 and 2 are not applicable for RX_DV/RX_CTRL. The
RX_DV/RX_CTRL strap must be configured for strap mode 3 or strap mode 4.
NOTE
Note: Strap modes 3 and 4 are not applicable for CRS. The CRS strap must be configured
for strap mode 1 or strap mode 2.
NOTE
Note: Strap modes 2 and 4 are not applicable for LED_0. The LED_0 strap must be
configured for strap mode 1 or strap mode 3.
Table 7. PAP Auto-negotiation Select Strap Details
MODE
ANEG_SEL0
ANEG_SEL1
REMARKS
10/100/1000
0
0
advertise ability of 10/100/1000
100/1000
1
0
advertise ability of 100/1000 only
1000
0
1
advertise ability of 1000 only
10/100
1
1
advertise ability of 10/100 only
Table 8. RGZ Auto-negotiation Select Strap Details
MODE
ANEG_SEL
REMARKS
10/100/1000
0
advertise ability of 10/100/1000
100/1000
1
advertise ability of 100/1000 only
Table 9. RGZ RGMII Transmit Clock Skew Details
MODE
RGMII CLOCK SKEW
TX[2]
RGMII CLOCK SKEW
TX[1]
RGMII CLOCK SKEW
TX[0]
RGMII TX CLOCK SKEW
1
0
0
0
0.5 ns
2
0
0
1
1.0 ns
3
0
1
0
1.5 ns
4
0
1
1
2.0 ns
5
1
0
0
2.5 ns
6
1
0
1
3.0 ns
7
1
1
0
3.5 ns
8
1
1
1
4.0 ns
Table 10. RGZ RGMII Receive Clock Skew Details
MODE
RGMII CLOCK SKEW
RX[2]
RGMII CLOCK SKEW
RX[1]
RGMII CLOCK SKEW
RX[0]
RGMII RX CLOCK SKEW
1
0
0
0
0.5 ns
2
0
0
1
1.0 ns
3
0
1
0
1.5 ns
4
0
1
1
2.0 ns
5
1
0
0
2.5 ns
6
1
0
1
3.0 ns
7
1
1
0
3.5 ns
8
1
1
1
4.0 ns
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8.5.2 LED Configuration
The DP83867 supports four configurable Light Emitting Diode (LED) pins: LED_0, LED_1, LED_2, and
RXD7/GPIO. Several functions can be multiplexed onto the LEDs for different modes of operation. The LED
operation mode can be selected using the LEDCR1 register (address 0x0018).
Since the LED output pins are also used as straps, the external components required for strapping and LED
usage must be considered in order to avoid contention. Specifically, when the LED outputs are used to drive
LEDs directly, the active state of each output driver is dependent on the logic level sampled by the corresponding
AN input upon power-up/reset.
If a given strap input is resistively pulled low then the corresponding output will be configured as an active high
driver. In the context of the 4-level straps, this will occur for modes 1, 2, and 3. Conversely, if a given strap input
is resistively pulled high, then the corresponding output will be configured as an active low driver. In the context
of the 4-level straps, this will occur only for mode 4.
Refer to Figure 23 for an example of strap connections to external components. In this example, the strapping
results in Mode 1 for LED_0 and Mode 4 for LED_1.
LED_0
LED_1
The adaptive nature of the LED outputs helps to simplify potential implementation issues of these dual purpose
pins.
Mode 4
470Q
470Q
2.49 lQ
Mode 1
VDD
GND
Figure 23. Example Strap Connections
8.5.3 LED Operation from 1.8 V I/O VDD Supply
Operation of LEDs from a 1.8-V supply results in dim LED lighting. For best results, the recommendation is to
operate from a higher supply (2.5 V or 3.3 V). Refer to Figure 24 for a possible implementation of this
functionality.
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2.5V or 3.3V
Mode 2
200 Q
1.8V
10 lQ
2.49 lQ
GND
GND
Figure 24. LED Operation from 1.8 V I/O VDD Supply
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8.5.4 PHY Address Configuration
The DP83867IRPAP can be set to respond to any of 32 possible PHY addresses via strap pins.
DP83867IRRGZ/CRRGZ support 16 addresses. The information is latched into the device at a device power up
or hardware reset. Each DP83867 or port sharing an MDIO bus in a system must have a unique physical
address. The DP83867IRPAP supports PHY address strapping values 0 (<00000>) through 31 (<11111>).
DP83867IRRGZ/CRRGZ support PHY addresses from 0(<0000>) to 16(<1111>).
For further detail relating to the latch-in timing requirements of the PHY Address pins, as well as the other
hardware configuration pins, refer to Reset Operation.
Based on the default strap configuration of PHY_ADD[4:0], the DP83867 PHY address will initialize to 0x00
without any external strap configuration.
Refer to Figure 25 for an example of a PHY address connection to external components. In this example, the
pins are configured as follows: RX_D4 = Strap Mode 4, RX_D2 = Strap Mode 3, and RX_D0 = Strap Mode 2.
Therefore, the PHY address strapping results in address 11001 (19h).
VDDIO
11 NŸ
RX_D0
VDDIO
2.49 NŸ
6.04 NŸ
RX_D2
2.49 NŸ
RX_D4
2.49 NŸ
Figure 25. IRPAP PHY Address Strapping Example
Refer to Figure 26 for an example of a PHY address connection to external components. In this example, the
pins are configured as follows: RX_D2 = Strap Mode 3 and RX_D0 = Strap Mode 2. Therefore, the PHY address
strapping results in address 1001 (09h).
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VDDIO
10 NŸ
RX_D0
VDDIO
2.49 NŸ
5.76 NŸ
RX_D2
2.49 NŸ
Figure 26. RGZ PHY Address Strapping Example
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8.5.5 Reset Operation
The DP83867 includes an internal power-on reset (POR) function and therefore does not need to be explicitly
reset for normal operation after power up. If required during normal operation, the device can be reset by a
hardware or software reset.
8.5.5.1 Hardware Reset
A hardware reset is accomplished by applying a low pulse, with a duration of at least 1 μs, to the RESET_N pin.
This will reset the device such that all registers will be reinitialized to default values and the hardware
configuration values will be re-latched into the device (similar to the power-up/reset operation).
8.5.5.2 IEEE Software Reset
An IEEE registers software reset is accomplished by setting the reset bit (bit 15) of the BMCR register (address
0x0000). This bit resets the IEEE-defined standard registers.
8.5.5.3 Global Software Reset
A global software reset is accomplished by setting bit 15 of register CTRL (address 0x001F) to ‘1’. This bit resets
all the internal circuits in the PHY including IEEE-defined registers and all the extended registers. The global
software reset resets the device such that all registers are reset to default values and the hardware configuration
values are maintained.
8.5.5.4 Global Software Restart
A global software restart is accomplished by setting bit 14 of register CTRL (0x001F) to ‘1’. This action resets all
the PHY circuits except the registers in the Register File.
8.5.6 Power Saving Modes
DP83867 supports 4 power saving modes. The details are provided below.
8.5.6.1 IEEE Power Down
The PHY is powered down but access to the PHY via MDIO-MDC pins is retained. This mode can be activated
by asserting external PWDN pin or by setting bit 11 of BMCR (Register 0x00).
The PHY can be taken out of this mode by a power cycle, software reset or by clearing the bit 11 in BMCR
register. However, the external PWDN pin should be de-asserted. If the PWDN pin is kept asserted then the PHY
will remain in power down.
8.5.6.2 Deep Power Down Mode
This same as IEEE power down but the XI pad will also be turned off. This mode can be activated by asserting
the external PWDN pin or by setting bit 11 of BMCR (Register 0x00). Before activating this mode, it is required to
set bit 7 for PHYCR (Register 0x10).
The PHY can be taken out of this mode by a power cycle, software reset or by clearing the bit 11 in BMCR
register. However, the external PWDN pin should be de-asserted. If the PWDN pin is kept asserted then the PHY
will remain in power down.
8.5.6.3 Active Sleep
In this mode all the digital and analog blocks are powered down. The PHY is automatically powered up when a
link partner is detected. This mode is useful for saving power when the link partner is down/inactive but PHY
cannot be powered down. In Active Sleep mode, the PHY will still routinely send NLP to the link partner. This
mode can be active by writing binary ‘10’ to bits [9:8] for PHYCR (Register 0x10).
8.5.6.4 Passive Sleep
This is just like Active sleep except the PHY does not send NLP. This mode can be activated by writing binary
‘11’ to bits [9:8] PHYCR (Register 0x10).
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8.6 Register Maps
In the register definitions under the ‘Default’ heading, the following definitions hold true:
RW
Read Write access
SC
Register sets on event occurrence and Self-Clears when event ends
RW/SC
ReadWrite access/Self Clearing bit
RO
Read Only access
COR
COR = Clear On Read
RO/COR
Read Only, Clear On Read
RO/P
Read Only, Permanently set to a default value
LL
Latched Low and held until read, based upon the occurrence of the corresponding event
LH
Latched High and held until read, based upon the occurrence of the corresponding event
8.6.1 Basic Mode Control Register (BMCR)
Table 11. Basic Mode Control Register (BMCR), Address 0x0000
BIT
15
BIT NAME
DEFAULT
RESET
0, RW/SC
DESCRIPTION
Reset:
1 = Initiate software Reset / Reset in Process.
0 = Normal operation.
This bit, which is self-clearing, returns a value of one until the reset
process is complete. The configuration is re-strapped.
14
LOOPBACK
0, RW
Loopback:
1 = Loopback enabled.
0 = Normal operation.
The loopback function enables MII transmit data to be routed to the
MII receive data path.
Setting this bit may cause the descrambler to lose synchronization
and produce a 500 µs “dead time” before any valid data will appear
at the MII receive outputs.
13
SPEED SELECTION LSB
0, RW
Speed Select (Bits 6, 13):
When auto-negotiation is disabled writing to this bit allows the port
speed to be selected.
11 = Reserved
10 = 1000 Mbps
1 = 100 Mbps
0 = 10 Mbps
12
AUTO-NEGOTIATION ENABLE
Strap, RW
Auto-Negotiation Enable:
Strap controls initial value at reset.
1 = Auto-Negotiation Enabled - bits 8 and 13 of this register are
ignored when this bit is set.
0 = Auto-Negotiation Disabled - bits 8 and 13 determine the port
speed and duplex mode.
11
POWER DOWN
0, RW
Power Down:
1 = Power down.
0 = Normal operation.
Setting this bit powers down the PHY. Only the register block is
enabled during a power down condition. This bit is ORd with the
input from the PWRDOWN_INT pin. When the active low
PWRDOWN_INT pin is asserted, this bit will be set.
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Register Maps (continued)
Table 11. Basic Mode Control Register (BMCR), Address 0x0000 (continued)
BIT
10
BIT NAME
ISOLATE
DEFAULT
0, RW
DESCRIPTION
Isolate:
1 = Isolates the Port from the MII with the exception of the serial
management.
0 = Normal operation.
9
RESTART AUTONEGOTIATION
0, RW/SC
Restart Auto-Negotiation:
1 = Restart Auto-Negotiation. Re-initiates the Auto-Negotiation
process. If Auto-Negotiation is disabled (bit 12 = 0), this bit is
ignored. This bit is self-clearing and will return a value of 1 until
Auto-Negotiation is initiated, whereupon it will self-clear. Operation
of the Auto-Negotiation process is not affected by the management
entity clearing this bit.
0 = Normal operation.
8
DUPLEX MODE
Strap, RW
Duplex Mode:
When auto-negotiation is disabled writing to this bit allows the port
Duplex capability to be selected.
1 = Full Duplex operation.
0 = Half Duplex operation.
7
COLLISION TEST
0, RW
Collision Test:
1 = Collision test enabled.
0 = Normal operation.
When set, this bit will cause the COL signal to be asserted in
response to the assertion of TX_EN within 512-bit times. The COL
signal will be de-asserted within 4-bit times in response to the deassertion of TX_EN.
6
SPEED SELECTION MSB
1, RW
Speed Select: See description for bit 13.
5:0
RESERVED
0 0000, RO
RESERVED: Write ignored, read as 0.
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8.6.2 Basic Mode Status Register (BMSR)
Table 12. Basic Mode Status Register (BMSR), Address 0x0001
BIT
BIT NAME
DEFAULT
15
100BASE-T4
0, RO/P
14
100BASE-TX
1, RO/P
DESCRIPTION
100BASE-T4 Capable:
0 = Device not able to perform 100BASE-T4 mode.
FULL DUPLEX
13
1 = Device able to perform 100BASE-TX in full duplex mode.
100BASE-TX
1, RO/P
HALF DUPLEX
12
1, RO/P
1, RO/P
10BASE-Te Half Duplex Capable:
1 = Device able to perform 10BASE-Te in half duplex mode.
100BASE-T2
0, RO/P
FULL DUPLEX
9
10BASE-Te Full Duplex Capable:
1 = Device able to perform 10BASE-Te in full duplex mode.
10BASE-Te
HALF DUPLEX
10
100BASE-TX Half Duplex Capable:
1 = Device able to perform 100BASE-TX in half duplex mode.
10BASE-Te
FULL DUPLEX
11
100BASE-TX Full Duplex Capable:
100BASE-T2 Full Duplex Capable:
0 = Device not able to perform 100BASE-T2 in full duplex mode.
100BASE-T2
0, RO/P
HALF DUPLEX
100BASE-T2 Half Duplex Capable:
0 = Device not able to perform 100BASE-T2 in half duplex mode.
8
EXTENDED STATUS
1, RO/P
7
RESERVED
0, RO
6
MF PREAMBLE SUPPRESSION 1, RO/P
1000BASE-T Extended Status Register:
1 = Device supports Extended Status Register 0x0F.
RESERVED: Write as 0, read as 0.
Preamble Suppression Capable:
1 = Device able to perform management transaction with preamble
suppressed, 32-bits of preamble needed only once after reset,
invalid opcode or invalid turnaround.
0 = Normal management operation.
5
AUTO-NEGOTIATION
0, RO
COMPLETE
Auto-Negotiation Complete:
1 = Auto-Negotiation process complete.
0 = Auto-Negotiation process not complete.
4
REMOTE FAULT
0, RO/LH
Remote Fault:
1 = Remote Fault condition detected (cleared on read or by reset).
Fault criteria: Far End Fault Indication or notification from Link
Partner of Remote Fault.
0 = No remote fault condition detected.
3
AUTO-NEGOTIATION ABILITY
1, RO/P
Auto Negotiation Ability:
1 = Device is able to perform Auto-Negotiation.
0 = Device is not able to perform Auto-Negotiation.
2
LINK STATUS
0, RO/LL
Link Status:
1 = Valid link established.
0 = Link not established.
The criteria for link validity is implementation specific. The
occurrence of a link failure condition will causes the Link Status bit
to clear. Once cleared, this bit may only be set by establishing a
good link condition and a read via the management interface.
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Table 12. Basic Mode Status Register (BMSR), Address 0x0001 (continued)
BIT
1
BIT NAME
JABBER DETECT
DEFAULT
0, RO/LH
DESCRIPTION
Jabber Detect: This bit only has meaning in 10 Mbps mode.
1 = Jabber condition detected.
0 = No Jabber.
This bit is implemented with a latching function, such that the
occurrence of a jabber condition causes it to set until it is cleared by
a read to this register by the management interface or by a reset.
0
EXTENDED CAPABILITY
1, RO/P
Extended Capability:
1 = Extended register capabilities.
0 = Basic register set capabilities only.
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8.6.3 PHY Identifier Register #1 (PHYIDR1)
The PHY Identifier Registers #1 and #2 together form a unique identifier for the DP83867. The Identifier consists
of a concatenation of the Organizationally Unique Identifier (OUI), the vendor's model number and the model
revision number. A PHY may return a value of zero in each of the 32 bits of the PHY Identifier if desired. The
PHY Identifier is intended to support network management. Texas Instruments' IEEE assigned OUI is 080028h.
Table 13. PHY Identifier Register #1 (PHYIDR1), address 0x0002
BIT
15:0
BIT NAME
DEFAULT
OUI_MSB
DESCRIPTION
0010 0000 0000 OUI Most Significant Bits: Bits 3 to 18 of the OUI (080028h,) are
0000, RO/P
stored in bits 15 to 0 of this register. The most significant two bits of
the OUI are ignored (the IEEE standard refers to these as bits 1 and
2).
8.6.4 PHY Identifier Register #2 (PHYIDR2)
Table 14. PHY Identifier Register #2 (PHYIDR2), Address 0x0003
BIT
15:10
BIT NAME
DEFAULT
OUI_LSB
1010 00, RO/P
DESCRIPTION
OUI Least Significant Bits:
Bits 19 to 24 of the OUI (080028h) are mapped from bits 15 to 10 of
this register respectively.
9:4
VNDR_MDL
10 0011, RO/P
Vendor Model Number:
The six bits of vendor model number are mapped from bits 9 to 4
(most significant bit to bit 9).
3:0
MDL_REV
0001, RO/P
Model Revision Number:
Four bits of the vendor model revision number are mapped from bits
3 to 0 (most significant bit to bit 3). This field will be incremented for
all major device changes.
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8.6.5 Auto-Negotiation Advertisement Register (ANAR)
This register contains the advertised abilities of this device as they will be transmitted to its link partner during
Auto-Negotiation. Any writes to this register prior to completion of Auto-Negotiation (as indicated in the Basic
Mode Status Register (address 01h) Auto-Negotiation Complete bit, BMSR[5]) should be followed by a
renegotiation. This will ensure that the new values are properly used in the Auto-Negotiation.
Table 15. Auto-Negotiation Advertisement Register (ANAR), Address 0x0004
BIT
15
BIT NAME
NP
DEFAULT
0, RW
DESCRIPTION
Next Page Indication:
0 = Next Page Transfer not desired.
1 = Next Page Transfer desired.
14
RESERVED
0, RO/P
RESERVED by IEEE: Writes ignored, Read as 0.
13
RF
0, RW
Remote Fault:
1 = Advertises that this device has detected a Remote Fault.
0 = No Remote Fault detected.
12
RESERVED
0, RW
RESERVED for Future IEEE use: Write as 0, Read as 0
11
ASM_DIR
0, RW
Asymmetric PAUSE Support for Full Duplex Links:
The ASM_DIR bit indicates that asymmetric PAUSE is supported.
Encoding and resolution of PAUSE bits is defined in IEEE 802.3
Annex 28B, Tables 28B-2 and 28B-3, respectively. Pause resolution
status is reported in PHYCR[13:12].
1 = Advertise that the DTE (MAC) has implemented both the
optional MAC control sublayer and the pause function as specified
in clause 31 and annex 31B of 802.3u.
0 = No MAC based full duplex flow control.
10
PAUSE
0, RW
PAUSE Support for Full Duplex Links:
The PAUSE bit indicates that the device is capable of providing the
symmetric PAUSE functions as defined in Annex 31B.
Encoding and resolution of PAUSE bits is defined in IEEE 802.3
Annex 28B, Tables 28B-2 and 28B-3, respectively. Pause resolution
status is reported in PHYCR[13:12].
1 = Advertise that the DTE (MAC) has implemented both the
optional MAC control sublayer and the pause function as specified
in clause 31 and annex 31B of 802.3u.
0 = No MAC based full duplex flow control.
9
T4
0, RO/P
100BASE-T4 Support:
1 = 100BASE-T4 is supported by the local device.
0 = 100BASE-T4 not supported.
8
TX_FD
Strap, RW
100BASE-TX Full Duplex Support:
1 = 100BASE-TX Full Duplex is supported by the local device.
0 = 100BASE-TX Full Duplex not supported.
7
TX
Strap, RW
100BASE-TX Support:
1 = 100BASE-TX is supported by the local device.
0 = 100BASE-TX not supported.
6
10_FD
Strap, RW
10BASE-Te Full Duplex Support:
1 = 10BASE-Te Full Duplex is supported by the local device.
0 = 10BASE-Te Full Duplex not supported.
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Table 15. Auto-Negotiation Advertisement Register (ANAR), Address 0x0004 (continued)
BIT
5
BIT NAME
DEFAULT
10
Strap, RW
DESCRIPTION
10BASE-Te Support:
1 = 10BASE-Te is supported by the local device.
0 = 10BASE-Te not supported.
4:0
SELECTOR
0 0001, RW
Protocol Selection Bits:
These bits contain the binary encoded protocol selector supported
by this port. <00001> indicates that this device supports IEEE
802.3u.
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8.6.6 Auto-Negotiation Link Partner Ability Register (ANLPAR) (BASE Page)
This register contains the advertised abilities of the Link Partner as received during Auto-Negotiation. The
content changes after the successful auto-negotiation if Next-pages are supported.
Table 16. Auto-Negotiation Link Partner Ability Register (ANLPAR), Address 0x0005
BIT
15
BIT NAME
NP
DEFAULT
0, RO
DESCRIPTION
Next Page Indication:
0 = Link Partner does not desire Next Page Transfer.
1 = Link Partner desires Next Page Transfer.
14
ACK
0, RO
Acknowledge:
1 = Link Partner acknowledges reception of the ability data word.
0 = Not acknowledged.
The Auto-Negotiation state machine will automatically control this bit
based on the incoming FLP bursts.
13
RF
0, RO
Remote Fault:
1 = Remote Fault indicated by Link Partner.
0 = No Remote Fault indicated by Link Partner.
12
RESERVED
0, RO
RESERVED for Future IEEE use: Write as 0, read as 0.
11
ASM_DIR
0, RO
ASYMMETRIC PAUSE:
1 = Asymmetric pause is supported by the Link Partner.
0 = Asymmetric pause is not supported by the Link Partner.
10
PAUSE
0, RO
PAUSE:
1 = Pause function is supported by the Link Partner.
0 = Pause function is not supported by the Link Partner.
9
T4
0, RO
100BASE-T4 Support:
1 = 100BASE-T4 is supported by the Link Partner.
0 = 100BASE-T4 not supported by the Link Partner.
8
TX_FD
0, RO
100BASE-TX Full Duplex Support:
1 = 100BASE-TX Full Duplex is supported by the Link Partner.
0 = 100BASE-TX Full Duplex not supported by the Link Partner.
7
TX
0, RO
100BASE-TX Support:
1 = 100BASE-TX is supported by the Link Partner.
0 = 100BASE-TX not supported by the Link Partner.
6
10_FD
0, RO
10BASE-Te Full Duplex Support:
1 = 10BASE-Te Full Duplex is supported by the Link Partner.
0 = 10BASE-Te Full Duplex not supported by the Link Partner.
5
10
0, RO
10BASE-Te Support:
1 = 10BASE-Te is supported by the Link Partner.
0 = 10BASE-Te not supported by the Link Partner.
4:0
SELECTOR
0 0000, RO
Protocol Selection Bits:
Link Partner's binary encoded protocol selector.
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8.6.7 Auto-Negotiate Expansion Register (ANER)
This register contains additional Local Device and Link Partner status information.
Table 17. Auto-Negotiate Expansion Register (ANER), Address 0x0006
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:7
RESERVED
0, RO
RESERVED: Writes ignored, Read as 0.
6
RX_NEXT_PAGE_LOC_ABLE
1, RO
Receive Next Page Location Able:
1 = Received Next Page storage location is specified by bit 6.5.
0 = Received Next Page storage location is not specified by bit 6.5.
5
RX_NEXT_PAGE_STOR_LOC
1, RO
Receive Next Page Storage Location:
1 = Link Partner Next Pages are stored in register 8.
0 = Link Partner Next Pages are stored in register 5.
4
PDF
0, RO
Parallel Detection Fault:
1 = A fault has been detected via the Parallel Detection function.
0 = A fault has not been detected.
3
LP_NP_ABLE
0, RO
Link Partner Next Page Able:
1 = Link Partner does support Next Page.
0 = Link Partner does not support Next Page.
2
NP_ABLE
1, RO/P
1
PAGE_RX
0, RO/COR
Next Page Able:
1 = Indicates local device is able to send additional Next Pages.
Link Code Word Page Received:
1 = Link Code Word has been received, cleared on a read.
0 = Link Code Word has not been received.
0
LP_AN_ABLE
0, RO
Link Partner Auto-Negotiation Able:
1 = Indicates that the Link Partner supports Auto-Negotiation.
0 = Indicates that the Link Partner does not support AutoNegotiation.
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8.6.8 Auto-Negotiation Next Page Transmit Register (ANNPTR)
This register contains the next page information sent by this device to its Link Partner during Auto-Negotiation.
Table 18. Auto-Negotiation Next Page Transmit Register (ANNPTR), Address 0x0007
BIT
15
BIT NAME
NP
DEFAULT
0, RW
DESCRIPTION
Next Page Indication:
0 = No other Next Page Transfer desired.
1 = Another Next Page desired.
14
ACK
0, RO
Acknowledge:
1 = Acknowledge reception of link code word
0 = Do not acknowledge of link code word.
13
MP
1, RW
Message Page:
1 = Current page is a Message Page.
0 = Current page is an Unformatted Page.
12
ACK2
0, RW
Acknowledge2:
1 = Will comply with message.
0 = Cannot comply with message.
Acknowledge2 is used by the next page function to indicate that
Local Device has the ability to comply with the message received.
11
TOG_TX
0, RO
Toggle:
1 = Value of toggle bit in previously transmitted Link Code Word
was 0.
0 = Value of toggle bit in previously transmitted Link Code Word
was 1.
Toggle is used by the Arbitration function within Auto-Negotiation to
ensure synchronization with the Link Partner during Next Page
exchange. This bit shall always take the opposite value of the
Toggle bit in the previously exchanged Link Code Word.
10:0
CODE
000 0000 0001,
RW
Code:
This field represents the code field of the next page transmission. If
the MP bit is set (bit 13 of this register), then the code shall be
interpreted as a "Message Page”, as defined in Annex 28C of IEEE
802.3u. Otherwise, the code shall be interpreted as an "Unformatted
Page”, and the interpretation is application specific.
The default value of the CODE represents a Null Page as defined in
Annex 28C of IEEE 802.3u.
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8.6.9 Auto-Negotiation Next Page Receive Register (ANNPRR)
This register contains the next page information sent by the Link Partner during Auto-Negotiation.
Table 19. Auto-Negotiation Next Page Transmit Register (ANNPTR), Address 0x0008
BIT
15
BIT NAME
DEFAULT
NP
0, RW
DESCRIPTION
Next Page Indication:
0 = No other Next Page Transfer desired by the link partner.
1 = Another Next Page desired by the link partner.
14
ACK
0, RO
Acknowledge:
1 = Acknowledge reception of link code word by the link partner.
0 = Link partner does not acknowledge reception of link code word.
13
MP
1, RW
Message Page:
1 = Received page is a Message Page.
0 = Received page is an Unformatted Page.
12
ACK2
0, RW
Acknowledge2:
1 = Link partner sets the ACK2 bit.
0 = Link partner coes not set the ACK2 bit.
Acknowledge2 is used by the next page function to indicate that link
partner has the ability to comply with the message received.
11
TOG_TX
0, RO
Toggle:
1 = Value of toggle bit in previously transmitted Link Code Word
was 0.
0 = Value of toggle bit in previously transmitted Link Code Word
was 1.
Toggle is used by the Arbitration function within Auto-Negotiation to
ensure synchronization with the Link Partner during Next Page
exchange. This bit shall always take the opposite value of the
Toggle bit in the previously exchanged Link Code Word.
10:0
CODE
000 0000 0001,
RW
Code:
This field represents the code field of the next page transmission. If
the MP bit is set (bit 13 of this register), then the code shall be
interpreted as a "Message Page”, as defined in Annex 28C of IEEE
802.3u. Otherwise, the code shall be interpreted as an "Unformatted
Page”, and the interpretation is application specific.
The default value of the CODE represents a Null Page as defined in
Annex 28C of IEEE 802.3u.
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8.6.10 1000BASE-T Configuration Register (CFG1)
Table 20. Configuration Register 1 (CFG1), Address 0x0009
BIT
15:13
BIT NAME
DEFAULT
TEST MODE
000, RW
DESCRIPTION
Test Mode Select:
111 = Test Mode 7 - Repetitive {Pulse, 63 zeros}
110 = Test Mode 6 - Repetitive 0001 sequence
101 = Test Mode 5 - Scrambled MLT3 Idles
100 = Test Mode 4 - Transmit Distortion Test
011 = Test Mode 3 - Transmit Jitter Test (Slave Mode)
010 = Test Mode 2 - Transmit Jitter Test (Master Mode)
001 = Test Mode 1 - Transmit Waveform Test
000 = Normal Mode
12
MASTER / SLAVE MANUAL
CONFIGURATION
0, RW
Enable Manual Master / Slave Configuration:
1 = Enable Manual Master/Slave Configuration control.
0 = Disable Manual Master/Slave Configuration control.
Using the manual configuration feature may prevent the PHY from
establishing link in 1000Base-T mode if a conflict with the link
partner’s setting exists.
11
MASTER / SLAVE
CONFIGURATION VALUE
0, RW
Manual Master / Slave Configuration Value:
1 = Set PHY as MASTER when register 09h bit 12 = 1.
0 = Set PHY as SLAVE when register 09h bit 12 = 1.
Using the manual configuration feature may prevent the PHY from
establishing link in 1000Base-T mode if a conflict with the link
partner’s setting exists.
10
PORT TYPE
0, RW
Advertise Device Type: Multi or single port:
1 = Multi-port device.
0 = Single-port device.
9
1000BASE-T FULL DUPLEX
0, RW
Advertise 1000BASE-T Full Duplex Capable:
1 = Advertise 1000Base-T Full Duplex ability.
0 = Do not advertise 1000Base-T Full Duplex ability.
8
1000BASE-T HALF DUPLEX
0, RW
Advertise 1000BASE-T Half Duplex Capable:
1 = Advertise 1000Base-T Half Duplex ability.
0 = Do not advertise 1000Base-T Half Duplex ability.
7
TDR AUTO RUN
0, RW
Automatic TDR on Link Down:
1 = Enable execution of TDR procedure after link down event.
0 = Disable automatic execution of TDR.
6:0
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000 0000, RO
RESERVED: Write ignored, read as 0.
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8.6.11 Status Register 1 (STS1)
Table 21. Status Register 1 (STS1) Address 0x000A
BIT
15
BIT NAME
DEFAULT
MASTER / SLAVE
CONFIGURATION FAULT
DESCRIPTION
0, RO, LH, COR Master / Slave Manual Configuration Fault Detected:
1 = Manual Master/Slave Configuration fault detected.
0 = No Manual Master/Slave Configuration fault detected.
14
MASTER / SLAVE
CONFIGURATION
RESOLUTION
0, RO
LOCAL RECEIVER STATUS
0, RO
Master / Slave Configuration Results:
1 = Configuration resolved to MASTER.
0 = Configuration resolved to SLAVE.
13
Local Receiver Status:
1 = Local receiveris OK.
0 = Local receiveris not OK.
12
REMOTE RECEIVER STATUS
0, RO
Remote Receiver Status:
1 = Remote receiver is OK.
0 = Remote receiver is not OK.
11
100BASE-T FULL DUPLEX
0, RO
Link Partner 1000BASE-T Full Duplex Capable:
1 = Link Partner capable of 1000Base-T Full Duplex.
0 = Link partner not capable of 1000Base-T Full Duplex.
10
1000BASE-T HALF DUPLEX
0, RO
Link Partner 1000BASE-T Half Duplex Capable:
1 = Link Partner capable of 1000Base-T Half Duplex.
0 = Link partner not capable of 1000Base-T Half Duplex.
9:8
RESERVED
00, RO
7:0
IDLE ERROR COUNTER
0000 0000, RO, 1000BASE-T Idle Error Counter
COR
RESERVED by IEEE: Writes ignored, read as 0.
8.6.12 Extended Register Addressing
REGCR (0x000D) and ADDAR (0x000E) allow read/write access to the extended register set (addresses above
0x001F) using indirect addressing.
• REGCR [15:14] = 00: A write to ADDAR modifies the extended register set address register. This address
register must be initialized in order to access any of the registers within the extended register set.
• •REGCR [15:14] = 01: A read/write to ADDAR operates on the register within the extended register set
selected (pointed to) by the value in the address register. The address register contents (pointer) remain
unchanged.
• REGCR [15:14] = 10: A read/write to ADDAR operates on the register within the extended register set
selected (pointed to) by the value in the address register. After that access is complete, for both reads and
writes, the value in the address register is incremented.
• REGCR [15:14] = 11: A read/write to ADDAR operates on the register within the extended register set
selected (pointed to) by the value in the address register. After that access is complete, for write accesses
only, the value in the address register is incremented. For read accesses, the value of the address register
remains unchanged.
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8.6.12.1 Register Control Register (REGCR)
This register is the MDIO Manageable MMD access control. In general, register REGCR (4:0) is the device
address DEVAD that directs any accesses of the ADDAR (0x000E) register to the appropriate MMD. REGCR
also contains selection bits for auto increment of the data register. This register contains the device address to
be written to access the extended registers. Write 0x1F into bits 4:0 of this register. REGCR also contains
selection bits (15:14) for the address auto-increment mode of ADDAR.
Table 22. Register Control Register (REGCR), address 0x000D
BIT
15:14
BIT NAME
DEFAULT
Function
0, RW
DESCRIPTION
00 = Address
01 = Data, no post increment
10 = Data, post increment on read and write
11 = Data, post increment on write only
13:5
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
4:0
DEVAD
0, RW
Device Address: In general, these bits [4:0] are the device address
DEVAD that directs any accesses of ADDAR register (0x000E) to
the appropriate MMD. Specifically, the DP83867 uses the vendor
specific DEVAD [4:0] = “11111” for accesses. All accesses through
registers REGCR and ADDAR should use this DEVAD.
Transactions with other DEVAD are ignored.
8.6.12.2 Address or Data Register (ADDAR)
This register is the address/data MMD register. ADDAR is used in conjunction with REGCR register (0x000D) to
provide the access by indirect read/write mechanism to the extended register set.
Table 23. Address or Data Register (ADDAR) address 0x000E
BIT
15:0
BIT NAME
DEFAULT
Address / Data
0, RW
DESCRIPTION
If REGCR register 15:14 = 00, holds the MMD DEVAD's address
register, otherwise holds the MMD DEVAD's data register
8.6.13 1000BASE-T Status Register (1KSCR)
Table 24. 1000BASE-T Status Register (1KSCR) address 0x000F
BIT
15
BIT NAME
DEFAULT
1000BASE-X FULL DUPLEX
0, RO/P
DESCRIPTION
1000BASE-X Full Duplex Support:
1 = 1000BASE-X Full Duplex is supported by the local device.
0 = 1000BASE-X Full Duplex is not supported by the local device.
14
1000BASE-X HALF DUPLEX
1000BASE-X Half Duplex Support:
0, RO/P
1 = 1000BASE-X Half Duplex is supported by the local device.
0 = 1000BASE-X Half Duplex is not supported by the local device.
13
1000BASE-T FULL DUPLEX
1000BASE-T Full Duplex Support:
1, RO/P
1 = 1000BASE-T Full Duplex is supported by the local device.
0 = 1000BASE-T Full Duplex is not supported by the local device.
12
1000BASE-T HALF DUPLEX
1000BASE-T Half Duplex Support:
1, RO/P
1 = 1000BASE-T Half Duplex is supported by the local device.
0 = 1000BASE-T Half Duplex is not supported by the local device.
11:0
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00, RO
RESERVED by IEEE: Writes ignored, read as 0.
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8.6.14 PHY Control Register (PHYCR)
Table 25. PHY Control Register (PHYCR), Address 0x0010
BIT
15:14
BIT NAME
DEFAULT
TX FIFO Depth
1, RW
DESCRIPTION
TX FIFO Depth:
11 = 8 bytes/nibbles (1000Mbps/Other Speeds)
10 = 6 bytes/nibbles (1000Mbps/Other Speeds)
01 = 4 bytes/nibbles (1000Mbps/Other Speeds)
00 = 3 bytes/nibbles (1000Mbps/Other Speeds)
Note: FIFO is enabled only in the following modes:
1000BaseT + GMII
13:11
RESERVED
010, RO
RESERVED
10
FORCE_LINK_GOOD
0, RW
Force Link Good:
1 = Force link good according to the selected speed.
0 = Normal operation
9:8
POWER_SAVE_MODE
0, RW
Power Saving Modes:
11 = Passive Sleep mode: Power down all digital and analog
blocks.
10 =Active Sleep mode: Power down all digital and analog blocks.
Automatic power-up is performed when link partner is detected. Link
pulses are transmitted approximately once per 1.4 Sec in this mode
to wake up any potential link partner.
01 = IEEE mode: power down all digital and analog blocks.
Note: If DISABLE_CLK_125 (bit [4]of this register) is set to zero, the
PLL is also powered down.
00 = Normal mode
7
DEEP_POWER_DOWN_EN
0, RW
Deep power down mode enable
1 = When power down is initiated via assertion of the external
Power Down pin or via the POWER_DOWN bit in the BMCR, the
device will enter a deep power down mode.
0 = Normal operation.
6:5
MDI_CROSSOVER
11, RO
MDI Crosssover Mode:
1x = Enable automatic crossover
1 = Manual MDI-X configuration
0 = Manual MDI configuration
4
DISABLE_CLK_125
0, RW
Disable 125MHz Clock:
This bit may be used in conjunction with POWER_SAVE_MODE
(bits 9:8 of this register).
1 = Disable CLK125.
0 = Enable CLK125.
3
RESERVED
1, RO
RESERVED: Writes ignored, read as 1.
2
STANDBY_MODE
0, RW
Standby Mode:
1 = Enable standby mode. Digital and analog circuitry are powered
up, but no link can be established.
0 = Normal operation.
1
LINE_DRIVER_INV_EN
0, RW
Line Driver Inversion Enable:
1 = Invert Line Driver Transmission.
0 = Normal operation.
0
DISABLE_JABBER
0, RW
Disable Jabber
1 = Disable Jabber function.
0 = Enable Jabber function.
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8.6.15 PHY Status Register (PHYSTS)
This register provides a single location within the register set for quick access to commonly accessed
information.
Table 26. PHY Status Register (PHYSTS), Address 0x0011
BIT
15:14
BIT NAME
DEFAULT
SPEED SELECTION
0, RO
DESCRIPTION
Speed Select Status:
These two bits indicate the speed of operation as determined by
Auto-negotiation or as set by manual configuration.
11 = Reserved
10 = 1000 Mbps
01 = 100 Mbps
00 = 10 Mbps
13
DUPLEX MODE
0, RO
Duplex Mode Status:
1 = Full Duplex
0 = Half Duplex.
12
PAGE RECEIVED
0, RO, LH, COR Page Received:
This bit is latched high and will be cleared upon a read.
1 = Page received.
0 = No page received.
11
SPEED DUPLEX RESOLVED
0, RO
Speed Duplex Resolution Status:
1 = Auto-Negotiation has completed or is disabled.
0 = Auto-Negotiation is enabled and has not completed.
10
LINK_STATUS
0, RO
Link Status:
1 = Link is up.
0 = Link is down.
9
MDI_X_MODE_CD
0, RO
MDI/MDIX Resolution Status for C and D Line Driver Pairs:
1 = Resolved as MDIX
0 = Resolved as MDI.
8
MDI_X_MODE_AB
0, RO
MDI/MDIX Resolution Status for A and B Line Driver Pairs:
1 = Resolved as MDIX
0 = Resolved as MDI.
7
SPEED_OPT_STATUS
0, RO
Speed Optimization Status:
1 = Auto-Negotiation is currently being performed with Speed
Optimization masking 1000BaseT abilities (Valid only during AutoNegotiation).
0 = Auto-Negotiation is currently being performed without Speed
Optimization.
6
SLEEP_MODE
0, RO
Sleep Mode Status:
1 = Device currently in sleep mode.
0 = Device currently in active mode.
5:2
WIRE_CROSS
0, RO
Crossed Wire Indication:
Indicates channel polarity in 1000BASE-T linked status. Bits [5:2]
correspond to channels [D,C,B,A], respectively.
1 = Channel polarity is reversed.
0 = Channel polarity is normal.
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Table 26. PHY Status Register (PHYSTS), Address 0x0011 (continued)
BIT
1
BIT NAME
DEFAULT
POLARITY STATUS
0, RO
DESCRIPTION
Polarity Status:
1 = Inverted Polarity detected.
0 = Correct Polarity detected.
0
JABBER DETECT
0, RO
Jabber Detect: This bit only has meaning in 10 Mbps mode.
This bit is a duplicate of the Jabber Detect bit in the BMSR register,
except that it is not cleared upon a read of the PHYSTS register.
1 = Jabber condition detected.
0 = No Jabber.
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8.6.16 MII Interrupt Control Register (MICR)
This register implements the Interrupt PHY Specific Control register. The individual interrupt events must be
enabled by setting bits in the MII Interrupt Control Register (MICR). If the corresponding enable bit in the register
is set, an interrupt will be generated if the event occurs.
Table 27. MII Interrupt Control Register (MICR), Address 0x0012
BIT
15
BIT NAME
DEFAULT
AUTONEG_ERR_INT_EN
0, RW
DESCRIPTION
Enable Auto-Negotiation Error Interrupt:
1 = Enable Auto-Negotiation Error interrupt.
0 = Disable Auto-Negotiation Error interrupt.
14
SPEED_CHNG_INT_EN
0, RW
Enable Speed Change Interrupt:
1 = Enable Speed Change interrupt.
0 = Disable Speed Change interrupt.
13
DUPLEX_MODE_CHNG_INT_E
N
0, RW
PAGE_RECEIVED_INT_EN
0, RW
Enable Duplex Mode Change Interrupt:
1 = Enable Duplex Mode Change interrupt.
0 = Disable Duplex Mode Change interrupt.
12
Enable Page Received Interrupt:
1 = Enable Page Received Interrupt.
0 = Disable Page Received Interrupt.
11
AUTONEG_COMP_INT_EN
0, RW
Enable Auto-Negotiation Complete Interrupt:
1 = Enable Auto-Negotiation Complete Interrupt.
0 = Disable Auto-Negotiation Complete Interrupt.
10
LINK_STATUS_CHNG_INT_EN
0, RW
Enable Link Status Change Interrupt:
1 = Enable Link Status Change interrupt.
0 = Disable Link Status Change interrupt.
9
RESERVED
0, RO
RESERVED
8
FALSE_CARRIER_INT_EN
0, RW
Enable False Carrier Interrupt:
1 = Enable False Carrier interrupt.
0 = Disable False Carrier interrupt.
7
RESERVED
0, RO
RESERVED
6
MDI_CROSSOVER_CHNG_INT
_EN
0, RW
Enable MDI Crossover Change Interrupt:
SPEED_OPT_EVENT_INT_EN
0, RW
1 = Enable MDI Crossover Change interrupt.
0 = Disable MDI Crossover Change interrupt.
5
Enable Speed Optimization Event Interrupt:
1 = Enable Speed Optimization Event Interrupt.
0 = Disable Speed Optimization Event Interrupt.
4
SLEEP_MODE_CHNG_INT_EN
0, RW
Enable Sleep Mode Change Interrupt:
1 = Enable Sleep Mode Change Interrupt.
0 = Disable Sleep Mode Change Interrupt.
3
WOL_INT_EN
0, RW
Enable Wake on LAN Interrupt:
1 = Enable Wake on LAN Interrupt.
0 = Disable Wake on LAN Interrupt.
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Table 27. MII Interrupt Control Register (MICR), Address 0x0012 (continued)
BIT
2
BIT NAME
DEFAULT
XGMII_ERR_INT_EN
0, RW
DESCRIPTION
Enable xGMII Error Interrupt:
1 = Enable xGMII Error Interrupt.
0 = Disable xGMII Error Interrupt.
1
POLARITY_CHNG_INT_EN
0, RW
Enable Polarity Change Interrupt:
1 = Enable Polarity Change interrupt.
0 = Disable Polarity Change interrupt.
0
JABBER_INT_EN
0, RW
Enable Jabber Interrupt:
1 = Enable Jabber interrupt.
0 = Disable Jabber interrupt.
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8.6.17 Interrupt Status Register (ISR)
This register contains event status for the interrupt function. If an event has occurred since the last read of this
register, the corresponding status bit will be set. The status indications in this register will be set even if the
interrupt is not enabled.
Table 28. Interrupt Status Register (ISR), Address 0x0013
BIT
15
BIT NAME
DEFAULT
AUTONEG_ERR_INT
DESCRIPTION
0, RO, LH, COR Auto-Negotiation Error Interrupt:
1 = Auto-Negotiation Error interrupt is pending and is cleared by the
current read.
0 = No Auto-Negotiation Error interrupt.
14
SPEED_CHNG_INT
0, RO, LH, COR Speed Change Interrupt:
1 = Speed Change interrupt is pending and is cleared by the current
read.
0 = No Speed Change interrupt.
13
DUPLEX_MODE_CHNG_INT
0, RO, LH, COR Duplex Mode Change Interrupt:
1 = Duplex Mode Change interrupt is pending and is cleared by the
current read.
0 = No Duplex Mode Change interrupt.
12
PAGE_RECEIVED_INT
0, RO, LH, COR Page Received Interrupt:
1 = Page Received Interrupt is pending and is cleared by the
current read.
0 = No Page Received Interrupt is pending.
11
AUTONEG_COMP_INT
0, RO, LH, COR Auto-Negotiation Complete Interrupt:
1 = Auto-Negotiation Complete Interrupt is pending and is cleared
by the current read.
0 = No Auto-Negotiation Complete Interrupt is pending.
10
LINK_STATUS_CHNG_INT
0, RO, LH, COR Link Status Change Interrupt:
1 = Link Status Change interrupt is pending and is cleared by the
current read.
0 = No Link Status Change interrupt is pending.
9
RESERVED
0, RO
RESERVED
8
FALSE_CARRIER_INT
0, RO, LH, COR False Carrier Interrupt:
1 = False Carrier interrupt is pending and is cleared by the current
read.
0 = No False Carrier interrupt is pending.
7
RESERVED
0, RO
6
MDI_CROSSOVER_CHNG_INT
0, RO, LH, COR MDI Crossover Change Interrupt:
RESERVED
1 = MDI Crossover Change interrupt is pending and is cleared by
the current read.
0 = No MDI Crossover Change interrupt is pending.
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Table 28. Interrupt Status Register (ISR), Address 0x0013 (continued)
BIT
5
BIT NAME
DEFAULT
SPEED_OPT_EVENT_INT
DESCRIPTION
0, RO, LH, COR Speed Optimization Event Interrupt:
1 = Speed Optimization Event Interrupt is pending and is cleared by
the current read.
0 = No Speed Optimization Event Interrupt is pending.
4
SLEEP_MODE_CHNG_INT
0, RO, LH, COR Sleep Mode Change Interrupt:
1 = Sleep Mode Change Interrupt is pending and is cleared by the
current read.
0 = No Sleep Mode Change Interrupt is pending.
3
WOL_INT
0, RO, LH, COR Wake on LAN Interrupt:
1 = Wake on LAN Interrupt is pending.
0 = No Wake on LAN Interrupt is pending.
2
XGMII_ERR_INT
0, RO, LH, COR xGMII Error Interrupt:
1 = xGMII Error Interrupt is pending and is cleared by the current
read.
0 = No xGMII Error Interrupt is pending.
1
POLARITY_CHNG_INT
0, RO, LH, COR Polarity Change Interrupt:
1 = Polarity Change interrupt is pending and is cleared by the
current read.
0 = No Polarity Change interrupt is pending.
0
JABBER_INT
0, RO, LH, COR Jabber Interrupt:
1 = Jabber interrupt is pending and is cleared by the current read.
0 = No Jabber interrupt is pending.
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8.6.18 Configuration Register 2 (CFG2)
Table 29. Configuration Register 2 (CFG2), Address 0x0014
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:14
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
13
INTERRUPT_POLARITY
1, RW
Configure Interrupt Polarity:
1 = Interrupt pin is active low.
0 = Interrupt pin is active high.
12
RESERVED
0, RO
RESERVED
11:10
SPEED_OPT_ATTEMPT_CNT
10, RO
Speed Optimization Attempt Count:
Selects the number of 1000BASE-T link establishment attempt
failures prior to performing Speed Optimization.
11 = 8
10 = 4
01 = 2
00 = 1
9
SPEED_OPT_EN
0, RW
Speed Optimization Enable:
1 = Enable Speed Optimization.
0 = Disable Speed Optimization.
8
SPEED_OPT_ENHANCED_EN
1, RW
Speed Optimization Enhanced Mode Enable:
In enhanced mode, speed is optimized if energy is not detected in
channels C and D.
1 = Enable Speed Optimization enhanced mode.
0 = Disable Speed Optimization enhanced mode.
7
RESERVED
0, RO
RESERVED
6
SPEED_OPT_10M_EN
1, RW
Enable Speed Optimization to 10BASE-Te:
1 = Enable speed optimization to 10BASE-Te if link establishment
fails in 1000BASE-T and 100BASE-TX .
0 = Disable speed optimization to 10BASE-Te.
5:0
RESERVED
0 0111, RO
RESERVED
8.6.19 Receiver Error Counter Register (RECR)
Table 30. Receiver Error Counter Register (RECR), Address 0x0015
BIT
15:0
76
BIT NAME
RXERCNT[15:0]
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DEFAULT
0, RO, WSC
DESCRIPTION
RX_ER Counter:
Receive error counter. This register saturates at the maximum value
of 0xFFFF. It is cleared by dummy write to this register.
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8.6.20 BIST Control Register (BISCR)
This register is used for Build-In Self Test (BIST) configuration. The BIST functionality provides Pseudo Random
Bit Stream (PRBS) mechanism including packet generation generator and checker. Selection of the exact
loopback point in the signal chain is also done in this register.
Table 31. BIST Control Register (BISCR), Address 0x0016
BIT
15
BIT NAME
DEFAULT
PRBS_COUNT_MODE
0, RW
DESCRIPTION
PRBS Continuous Mode:
1 = Continuous mode enabled. When one of the PRBS counters
reaches the maximum value, a pulse is generated and the counter
starts counting from zero again. This bit must be set for proper
PRBS operation.
0 = PRBS continuous mode disabled. PRBS operation is not
supported for this setting.
14
GEN_PRBS_PACKET
0, RW
Generated PRBS Packets:
1 = When the packet generator is enabled, it will generate
continuous packets with PRBS data. When the packet generator is
disabled, the PRBS checker is still enabled.
0 = When the packet generator is enabled, it will generate a single
packet with constant data. PRBS generation and checking is
disabled.
13
PACKET_GEN_64BIT_MODE
0, RW
BIST Packet Size:
1 = Transmit 64 byte packets in packet generation mode.
0 = Transmit 1518 byte packets in packet generation mode
12
PACKET_GEN_EN
0, RW
Packet BIST Enable:
1 = Enable packet/PRBS generator
0 = Disable packet/PRBS generator
11:8
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
7
REV_LOOP_RX_DATA_CTRL
0, RW
Reverse Loopback Receive Data Control:
This bit may only be set in reverse loopback mode.
1 = Send RX packets to MAC in reverse loop
0 = Suppress RX packets to MAC in reverse loop
6
MII_LOOP_TX_DATA_CTRL
0, RW
MII Loopback Transmit Data Control:
This bit may only be set in MII loopback mode.
1 = Transmit data to MDI in MII loop
0 = Suppress data to MDI in MII loop
5:2
LOOPBACK_MODE
0, RW
Loopback Mode Select:
PCS Loopback must be disabled (Bits [1:0] =00) prior to selecting
the loopback mode.
1000: Reverse loop
0100: External loop
0010: Analog loop
0001: Digital loop
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Table 31. BIST Control Register (BISCR), Address 0x0016 (continued)
BIT
1:0
BIT NAME
PCS_LOOPBACK
DEFAULT
0, RW
DESCRIPTION
PCS Loopback Select:
When configured for 100Base-TX:
11: Loop after MLT3 encoder (full TX/RX path)
10: Loop after scrambler, before MLT3 encoder
01: Loop before scrambler
When configured for 1000Base-T:
x1: Loop before 1000Base-T signal processing.
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8.6.21 Status Register 2 (STS2)
Table 32. Status Register 2 (STS2), Address 0x0017
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:12
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
11
PRBS_LOCK
0, RO
PRBS Lock Status:
1 = PRBS checker is locked to the received byte stream.
0 = PRBS checker is not locked.
10
PRBS_LOCK_LOST
0, RO, LH, COR PRBS Lock Lost:
1 = PRBS checker has lost lock.
0 = PRBS checker has not lost lock.
9
PKT_GEN_BUSY
0, RO
Packet Generator Busy:
1 = Packet generation is in process.
0 = Packet generation is not in process.
8
SCR_MODE_MASTER_1G
0, RO
Gigabit Master Scramble Mode:
1 = 1G PCS (master) is in legacy encoding mode.
0 = 1G PCS (master) is in normal encoding mode..
7
SCR_MODE_MASTER_1G
0, RO
Gigabit Slave Scramble Mode:
1 = 1G PCS (slave) is in legacy encoding mode.
0 = 1G PCS (slave) is in normal encoding mode..
6
CORE_PWR_MODE
0, RO
Core Power Mode:
1 = Core is in normal power mode.
0 = Core is power down mode or in sleep mode.
5:0
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
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8.6.22 LED Configuration Register 1 (LEDCR1)
This register maps the LED functions to the corresponding pins.
Table 33. LED Configuration Register 1 (LEDCR1), Address 0x0018
BIT
15:12
BIT NAME
LED_GPIO_SEL
DEFAULT
RW, 0110
DESCRIPTION
Source of the GPIO LED:
1111: Reserved
1110: Receive Error
1101: Receive Error or Transmit Error
1100: RESERVED
1011: Link established, blink for transmit or receive activity
1010: Full duplex
1001: 100/1000BT link established
1000: 10/100BT link established
0111: 10BT link established
0110: 100 BTX link established
0101: 1000BT link established
0100: Collision detected
0011: Receive activity
0010: Transmit activity
0001: Receive or Transmit activity
0000: Link established
11:8
LED_2_SEL
RW, 0001
Source of LED_2:
1111: Reserved
1110: Receive Error
1101: Receive Error or Transmit Error
1100: RESERVED
1011: Link established, blink for transmit or receive activity
1010: Full duplex
1001: 100/1000BT link established
1000: 10/100BT link established
0111: 10BT link established
0110: 100 BTX link established
0101: 1000BT link established
0100: Collision detected
0011: Receive activity
0010: Transmit activity
0001: Receive or Transmit activity
0000: Link established
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Table 33. LED Configuration Register 1 (LEDCR1), Address 0x0018 (continued)
BIT
7:4
BIT NAME
DEFAULT
LED_1_SEL
RW, 0101
DESCRIPTION
Source of LED_1:
1111: Reserved
1110: Receive Error
1101: Receive Error or Transmit Error
1100: RESERVED
1011: Link established, blink for transmit or receive activity
1010: Full duplex
1001: 100/1000BT link established
1000: 10/100BT link established
0111: 10BT link established
0110: 100 BTX link established
0101: 1000BT link established
0100: Collision detected
0011: Receive activity
0010: Transmit activity
0001: Receive or Transmit activity
0000: Link established
3:0
LED_0_SEL
RW, 0000
Source of LED_0:
1111: Reserved
1110: Receive Error
1101: Receive Error or Transmit Error
1100: RESERVED
1011: Link established, blink for transmit or receive activity
1010: Full duplex
1001: 100/1000BT link established
1000: 10/100BT link established
0111: 10BT link established
0110: 100 BTX link established
0101: 1000BT link established
0100: Collision detected
0011: Receive activity
0010: Transmit activity
0001: Receive or Transmit activity
0000: Link established
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8.6.23 LED Configuration Register 2 (LEDCR2)
This register provides the ability to directly control any or all LED outputs.
Table 34. LED Configuration Register 2 (LEDCR2), Address 0x0019
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
14
LED_GPIO_POLARITY
1, RW
GPIO LED Polarity:
1 = Active high
0 = Active low
13
LED_GPIO_DRV_VAL
0, RW
GPIO LED Drive Value:
Value to force on GPIO LED
This bit is only valid if enabled via LED_GPIO_DRV_EN.
12
LED_GPIO_DRV_EN
0, RW
GPIO LED Drive Enable:
1 = Force the value of the LED_GPIO_DRV_VAL bit onto the GPIO
LED.
0 = Normal operation
11
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
10
LED_2_POLARITY
1, RW
LED_2 Polarity:
1 = Active high
0 = Active low
9
LED_2_DRV_VAL
0, RW
LED_2 Drive Value:
Value to force on LED_2
This bit is only valid if enabled via LED_2_DRV_EN.
8
LED_2_DRV_EN
0, RW
LED_2 Drive Enable:
1 = Force the value of the LED_2_DRV_VAL bit onto LED_2.
0 = Normal operation
7
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
6
LED_1_POLARITY
1, RW
LED_1 Polarity:
1 = Active high
0 = Active low
5
LED_1_DRV_VAL
0, RW
LED_1 Drive Value:
Value to force on LED_1
This bit is only valid if enabled via LED_1_DRV_EN.
4
LED_1_DRV_EN
0, RW
LED_1 Drive Enable:
1 = Force the value of the LED_1_DRV_VAL bit onto LED_1.
0 = Normal operation
3
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
2
LED_0_POLARITY
1, RW
LED_0 Polarity:
1 = Active high
0 = Active low
1
LED_0_DRV_VAL
0, RW
LED_0 Drive Value:
Value to force on LED_0
This bit is only valid if enabled via LED_0_DRV_EN.
0
LED_0_DRV_EN
0, RW
LED_0 Drive Enable:
1 = Force the value of the LED_0_DRV_VAL bit onto LED_0.
0 = Normal operation
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8.6.24 LED Configuration Register (LEDCR3)
This register controls the LED blink rate and stretching.
Table 35. LED Configuration Register 3 (LEDCR3), Address 0x001A
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:3
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
2
LEDS_BYPASS_STRETCHING
0, RW
Bypass LED Stretching:
1 = Bypass LED Stretching
0 = Normal operation
1:0
LEDS_BLINK_RATE
10, RW
LED Blink Rate:
11: 2Hz (500mSec)
10: 5Hz (200mSec)
01: 10Hz (100mSec)
00 = 20Hz (50mSec)
8.6.25 Configuration Register 3 (CFG3)
Table 36. Configuration Register 3 (CFG3), Address 0x001E
BIT
15
BIT NAME
DEFAULT
Fast Link-Up in Parallel Detect
0, RW
DESCRIPTION
Fast Link-Up in Parallel Detect Mode:
1 = Enable Fast Link-Up time During Parallel Detection
0 = Normal Parallel Detection link establishment
In Fast Auto MDI-X this bit is automatically set.
14
Fast AN Enable
0, RW
Fast Auto-Negotiation Enable:
1 = Enable Fast Auto-Negotiation mode – The PHY autonegotiates using Timer setting according to Fast AN Sel bits
0 = Disable Fast Auto-Negotiation mode – The PHY autonegotiates using normal Timer setting
Adjusting these bits reduces the time it takes to Auto-negotiate
between two PHYs. Note: When using this option care must be
taken to maintain proper operation of the system. While shortening
these timer intervals may not cause problems in normal operation,
there are certain situations where this may lead to problems.
13:12
Fast AN Sel
0, RW
Fast Auto-Negotiation Select bits:
Fast AN
Select
Break
Link
Timer(ms)
Link Fall
Inhibit
Timer(ms)
Auto-Neg
Wait
Timer(ms)
<00>
80
50
35
<01>
120
75
50
<10>
240
150
100
<11>
NA
NA
NA
Adjusting these bits reduces the time it takes to Auto-negotiate
between two PHYs. In Fast AN mode, both PHYs should be
configured to the same configuration. These 2 bits define the
duration for each state of the Auto Negotiation process according
to the table above. The new duration time must be enabled by
setting “Fast AN En” - bit 4 of this register. Note: Using this mode
in cases where both link partners are not configured to the same
Fast Auto-negotiation configuration might produce scenarios with
unexpected behavior.
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Table 36. Configuration Register 3 (CFG3), Address 0x001E (continued)
BIT
11
BIT NAME
Extended FD Ability
DEFAULT
0, RW
DESCRIPTION
Extended Full-Duplex Ability:
1 = Force Full-Duplex while working with link partner in forced
100B-TX. When the PHY is set to Auto-Negotiation or Force 100BTX and the link partner is operated in Force 100B-TX, the link is
always Full Duplex
0 = Disable Extended Full Duplex Ability. Decision to work in Full
Duplex or Half Duplex mode follows IEEE specification.
10
RESERVED
0, RO
RESERVED
9
Robust Auto-MDIX
0, RW
Robust Auto-MDIX:
1 =Enable Robust Auto MDI/MDIX resolution
0 = Normal Auto MDI/MDIX mode
If link partners are configured to operational modes that are not
supported by normal Auto MDI/MDIX mode (like Auto-Neg versus
Force 100Base-TX or Force 100Base-TX versus Force 100BaseTX), this Robust Auto MDI/MDIX mode allows MDI/MDIX
resolution and prevents deadlock.
8
Fast Auto-MDIX
0, RW
Fast Auto MDI/MDIX:
1 = Enable Fast Auto MDI/MDIX mode
0 = Normal Auto MDI/MDIX mode
If both link partners are configured to work in Force 100Base-TX
mode (Auto-Negotiation is disabled), this mode enables Automatic
MDI/MDIX resolution in a short time.
7
INT_OE
0, RW
Interrupt Output Enable:
1 = INTN/PWDNN Pad is an Interrupt Output.
0 = INTN/PWDNN Pad in a Power Down Input.
6
FORCE_INTERRUPT
0, RW
Force Interrupt:
1 = Assert interrupt pin.
0 = Normal interrupt mode.
5:3
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
2
TDR_FAIL
0, RO
TDR Failure:
1 = TDR failed.
0 = Normal TDR operation.
1
TDR_DONE
1, RO
TDR Done:
1 = TDR has completed.
0 = TDR has not completed.
0
TDR_START
0, RW
TDR Start:
1 = Start TDR.
0 = Normal operation
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8.6.26 Control Register (CTRL)
Table 37. Control Register (CTRL), Address 0x001F
BIT
15
BIT NAME
DEFAULT
SW_RESET
0, RW, SC
DESCRIPTION
Software Reset:
1 = Perform a full reset, including registers.
0 = Normal operation.
14
SW_RESTART
0, RW, SC
Software Restart:
1 = Perform a full reset, not including registers. .
0 = Normal operation.
13:0
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
8.6.27 Testmode Channel Control (TMCH_CTRL)
Table 38. Testmode Channel Control (TMCH_CTRL), Address 0x0025
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
RESERVED
0x04
RESERVED
7:5
TM_CH_SEL
0x0
Test mode Channel Select.
If bit 7 is set then Test mode is driven on all 4 channels. If bit 7 is
cleared then test modes are driven according to bits 6:5 as follows:
00: Channel A
01: Channel B
10: Channel C
11: Channel D
4:0
RESERVED
0x00
RESERVED
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8.6.28 Fast Link Drop Configuration Register (FLD_CFG)
Table 39. Fast Link Drop Configuration Register (FLD_CFG), Address 0x002D
BIT
15
BIT NAME
DEFAULT
FLD_EN
0, RW
DESCRIPTION
Fast Link Drop Enable:
1 = Enable FLD.
0 = Normal operation.
14
FLD_1G
0, RW
1000BASE-T Fast Link Drop:
1 = Configure FLD for 1000BASE-T operation.
0 = Normal operation.
13
RESERVED
0, RO
RESERVED
12:8
FLD_STS
0, RO, LH
Fast Link Drop Status:
Status Registers that latch high each time a given Fast Link Down
mode is activated and causes a link drop (assuming this criterion
was enabled):
Bit 12: Descrambler Loss Sync
Bit 11: RX Errors
Bit 10: MLT3 Errors
Bit 9: SNR level
Bit 8: Signal/Energy Lost
7:5
RESERVED
0, RO
RESERVED
4:0
FLD_SRC_CFG
0, RW
Fast Link Drop Source Configuration:
The following FLD sources can be configured independently:
Bit 4: Descrambler Loss Sync
Bit 3: RX Errors
Bit 2: MLT3 Errors
Bit 1: SNR level
Bit 0: Signal/Energy Lost
8.6.29 Configuration Register 4 (CFG4)
Table 40. Configuration Register 4 (CFG4), Address 0x0031
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:1
RESERVED
000 0000 0000
0100, RO
RESERVED
0
PORT_MIRROR_EN
0, RW
Port Mirror Enable:
1 = Enable port mirroring.
0 = Normal operation
8.6.30 RGMII Control Register (RGMIICTL)
This register provides access to the RGMII controls.
Table 41. RGMII Control Register (RGMIICTL), Address 0x0032
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
7
RGMII_EN
1, RW
RGMII Enable:
1 = Enable RGMII interface.
0 = Disable RGMII interface.
6:5
RGMII_RX_HALF_FULL_THR
10, RW
RGMII Receive FIFO Half Full Threshold:
This field controls the RGMII receive FIFO half full threshold.
4:3
86
RGMII_TX_HALF_FULL_THR
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10, RW
RGMII Transmit FIFO Half Full Threshold:
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Table 41. RGMII Control Register (RGMIICTL), Address 0x0032 (continued)
BIT
BIT NAME
DEFAULT
DESCRIPTION
This field controls the RGMII transmit FIFO half full threshold.
2
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
1
RGMII_TX_CLK_DELAY
0, RW
RGMII Transmit Clock Delay:
1 = RGMII transmit clock is shifted relative to transmit data.
0 = RGMII transmit clock is aligned to transmit data.
0
RGMII_RX_CLK_DELAY
0, RW
RGMII Receive Clock Delay:
1 = RGMII receive clock is shifted relative to receive data.
0 = RGMII receive clock is aligned to receive data.
8.6.31 RGMII Control Register 2 (RGMIICTL2)
Table 42. RGMII Control Register 2 (RGMIICTL2), Address 0x0033
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:5
RESERVED
0, RO
RESERVED
4
RGMII_AF_BYPASS_EN
0, RW
RGMII Async FIFO Bypass Enable:
1 = Enable RGMII Async FIFO Bypass.
0 = Normal operation.
3:0
RESERVED
0, RO
RESERVED
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8.6.32 100BASE-TX Configuration (100CR)
Table 43. 100BASE-TX Configuration Register (100CR), Address 0x0043
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:12
RESERVED
0, RO
RESERVED
11
DESCRAM_TIMEOUT_DIS
0, RW
Disable 100Base-TX Descrambler Timeout:
1 = Disable packet reception when received packet violates the
descrambler timeout. This occurs when the packet is longer than
1.5ms.
0 = Stops packet reception when received packet violates the
descrambler timeout. This occurs when the packet is longer than
1.5ms.
10:7
DESCRAM_TIMEOUT
1111, RW
Descrambler Timeout:
Adjust the descrambler time out value. This value refers to the
recovery time due to descrambler un-lock. Timer is in 'ms' units.
6
FORCE_100_OK
0, RW
Force 100Mbps Good Link:
1 = Forces 100 Mbps good link.
0 = Normal operation.
5
ENH_MLT3_DET_EN
1, RW
Enhanced MLT-3 Detection Enable:
1 = Enable enhanced MLT-3 Detection.
0 = Normal operation.
4
ENH_IPG_DET_EN
0, RW
Enhanced Interpacket Gap Detection Enable:
1 = Enable enhanced interpacket gap detection.
0 = Normal operation.
3
BYPASS_4B5B_RX
0, RW
Bypass 4B/5B Receive Decoder:
1 = Bypass 4B/5B decoder in receive path.
0 = Normal operation.
2
SCR_DIS
0, RW
Disable Scrambler:
1 = Disable scrambler.
0 = Normal operation.
1
ODD_NIBBLE_DETECT
0, RW
Enable Odd Nibble Detection:
1 = Detect when an odd number of nibbles is received.
0 = Normal operation.
0
FAST_RX_DV
0, RW
Fast RX_DV Enable:
1 = Enable fast RX_DV.
0 = Normal operation.
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8.6.33 Strap Configuration Status Register 1 (STRAP_STS1)
Table 44. Strap Configuration Status Register 1 (STRAP_STS1), Address 0x006E
BIT
15
BIT NAME
DEFAULT
STRAP_MIRROR_EN
Strap, RO
DESCRIPTION
Mirror Enable Strap:
1 = Port mirroring strapped to enable.
0 = Port mirroring strapped to disable.
14
STRAP_LINK_DOWNSHIFT_EN Strap, RO
Link Downshift Enable Strap:
1 = Link Downshift strapped to enable.
0 = Link Downshift strapped to disable.
13
STRAP_CLK_OUT_DIS
Strap, RO
Clock Output Disable Strap:
1 = Clock output strapped to disable.
0 = Clock output strapped to enable.
12
STRAP_RGMII_DIS
Strap, RO
RGMII Disable Strap:
1 = RGMII strapped to disable.
0 = RGMII strapped to enable.
11
RESERVED
0, RO
RESERVED
10
STRAP_AMDIX_DIS
Strap, RO
Auto-MDIX Disable Strap:
1 = Auto-MDIX strapped to disable.
0 = Auto-MDIX strapped to enable.
9
STRAP_FORCE_MDI_X
Strap, RO
Force MDI/X Strap:
1 = Force MDIX strapped to enable.
0 = Force MDI strapped to enable.
8
STRAP_HD_EN
Strap, RO
Half Duplex Enable Strap:
1 = Half Duplex strapped to enable.
0 = Full Duplex strapped to enable.
7
STRAP_ANEG_DIS
Strap, RO
Auto-Negotiation Disable Strap:
1 = Auto-Negotiation strapped to disable.
0 = Auto-Negotiation strapped to enable.
6:5
STRAP_ANEG_SEL (PAP)
Strap, RO
Speed Select Strap:
SPEED_SEL[1:0] values from straps for PAP devices
See Speed Select Strap Details table.
4:0
STRAP_PHY_ADD (PAP)
Strap, RO
PHY Address Strap for PAP:
PHY address value from straps.
6
RESERVED (RGZ)
0, RO
RESERVED
5
STRAP_SPEED_SEL (RGZ)
Strap, RO
SPEED_SEL value from strap for RGZ devices
See Speed Select Strap Details table.
4
RESERVED
0, RO
RESERVED
3:0
STRAP_PHY_ADD (RGZ)
Strap, RO
PHY Address Strap for RGZ:
PHY address value from straps.
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8.6.34 Strap Configuration Status Register 2 (STRAP_STS2)
Table 45. Strap Configuration Status Register 2 (STRAP_STS2), Address 0x006F
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:11
RESERVED
0, RO
RESERVED
10
STRAP_ FLD
Strap, RO
Fast Link Detect (FLD) Enable Strap:
1 = FLD strapped to enable.
0 = FLD strapped to disable.
9
RESERVED
0, RO
RESERVED
8
RESERVED
0, RO
RESERVED
7
RESERVED
0, RO
RESERVED
6:4
RESERVED (PAP)
0, RO
RESERVED
6:4
STRAP_RGMII_CLK_SKEW_TX Strap, RO
(RGZ)
RGMII Transmit Clock Skew Strap:
RGMII_TX_DELAY_CTRL[2:0] values from straps.
See RGMII Transmit Clock Skew Details table for more information.
3
RESERVED
0, RO
RESERVED
2:0
RESERVED (PAP)
0, RO
RESERVED
2:0
STRAP_RGMII_CLK_SKEW_RX Strap, RO
(RGZ)
RGMII Receive Clock Skew Strap:
RGMII_RX_DELAY_CTRL[2:0] values from straps.
See RGMII Transmit Clock Skew Details table for more information.
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8.6.35 BIST Control and Status Register 1 (BICSR1)
Table 46. BIST Control and Status Register 1 (BICSR1), Address 0x0071
BIT
15:0
BIT NAME
DEFAULT
PRBS_BYTE_CNT
0x0000, RO
DESCRIPTION
Holds the number of total bytes received by the PRBS checker.
Value in this register is locked when write is done to register
BICSR2 bit[0] or bit[1].
The count stops at 0xFFFF when PRBS_COUNT_MODE in BISCR
register (0x0016) is set to 0.
8.6.36 BIST Control and Status Register 2 (BICSR2)
Table 47. BIST Control and Status Register 2 (BICSR2), Address 0x0072
BIT
15:11
BIT NAME
DEFAULT
Reserved
0x00, RO
DESCRIPTION
Ignored on Read
PRBS Checker Packet Count Overflow
If set, PRBS Packet counter has reached overflow. Overflow is
cleared when PRBS counters are cleared by setting bit #1 of this
register.
10
PRBS_PKT_CNT_OVF
0, RO
9
PRBS_BYTE_CNT_OVF
0, RO
If set, PRBS Byte counter has reached overflow. Overflow is cleared
when PRBS counters are cleared by setting bit #1 of this register.
8
Reserved
0,RO
Ignore on Read
PRBS Byte Count Overflow
Holds number of error bytes that are received by PRBS checker.
Value in this register is locked when write is done to bit[0] or bit[1]
7:0
PRBS_ERR_CNT
0x00, RO
When PRBS Count Mode set to zero, count stops on 0xFF (see
register 0x0016)
Notes: Writing bit 0 generates a lock signal for the PRBS counters.
Writing bit 1 generates a lock and clear signal for the PRBS
counters
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8.6.37 RGMII Delay Control Register (RGMIIDCTL)
This register provides access to the RGMII delay controls.
Table 48. RGMII Delay Control Register (RGMIIDCTL), Address 0x0086
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
7:4
RGMII_TX_DELAY_CTRL
RW, 0111
RGMII Transmit Clock Delay:
1111: 4.00 ns
1110: 3.75 ns
1101: 3.50 ns
1100: 3.25 ns
1011: 3.00 ns
1010: 2.75 ns
1001: 2.50 ns
1000: 2.25 ns
0111: 2.00 ns
0110: 1.75 ns
0101: 1.50 ns
0100: 1.25 ns
0011: 1.00 ns
0010: 0.75 ns
0001: 0.50 ns
0000: 0.25 ns
3:0
RGMII_RX_DELAY_CTRL
RW, 0111
RGMII Receive Clock Delay:
1111: 4.00 ns
1110: 3.75 ns
1101: 3.50 ns
1100: 3.25 ns
1011: 3.00 ns
1010: 2.75 ns
1001: 2.50 ns
1000: 2.25 ns
0111: 2.00 ns
0110: 1.75 ns
0101: 1.50 ns
0100: 1.25 ns
0011: 1.00 ns
0010: 0.75 ns
0001: 0.50 ns
0000: 0.25 ns
92
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8.6.38 Loopback Configuration Register (LOOPCR)
Table 49. Loopback Configuration Register (LOOPCR), Address 0x00FE
BIT
15:0
BIT NAME
DEFAULT
LOOP_CFG_VAL
DESCRIPTION
1110 0111 0010 Loopback Configuration Value:
0001, RW
1110 0111 0010 000: Configuration for loopback modes.
A software reset via bit 14 of the Control Register (CTRL), address
0x001F, is required after changes to this register value.
Other values for this register are not recommended.
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8.6.39 Receive Configuration Register (RXFCFG)
This register provides receive configuration for Wake on LAN (WoL).
Table 50. Receive Configuration Register (RXFCFG), Address 0x0134
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:12
RESERVED
0, RO
RESERVED
11
WOL_OUT_CLEAR
0, RW, SC
Clear Wake on LAN Output:
This bit is only applicable when configured for level mode.
1 = Clear Wake on LAN output
10:9
WOL_OUT_STRETCH
00, RW
Wake on LAN Output Stretch:
If WoL out is configured for pulse mode, the pulse length is defined
as the following number of 125MHz clock cycles:
11 = 64 clock cycles
10 = 32 clock cycles
01 = 16 clock cycles
00 = 8 clock cycles
8
WOL_OUT_MODE
0, RW
Wake on LAN Output Mode:
1 = Level Mode. WoL is cleared by a write to WOL_OUT_CLEAR
(bit 11).
0 = Pulse Mode. Pulse width is configured via
WOL_OUT_STRETCH (bits 10:9).
7
ENHANCED_MAC_SUPPORT
0, RW
Enable Enhanced Receive Features:
1 = Enable for Wake on LAN, CRC check, and Receive 1588
indication.
0 = Normal operation.
6
RESERVED
0, RO
RESERVED
5
SCRON_EN
0, RW
Enable SecureOn Password:
1 = SecureOn Password enabled.
0 = SecureOn Password disabled.
4
WAKE_ON_UCAST
0, RW
Wake on Unicast Packet:
1 = Issue an interrupt upon reception of Unicast packet.
0 = Do not issue an interrupt upon reception of Unicast packet.
3
RESERVED
0, RO
RESERVED
2
WAKE_ON_BCAST
1, RW
Wake on Broadcast Packet:
1 = Issue an interrupt upon reception of Broadcast packet.
0 = Do not issue an interrupt upon reception of Broadcast packet.
1
WAKE_ON_PATTERN
0, RW
Wake on Pattern Match:
1 = Issue an interrupt upon pattern match.
0 = Do not issue an interrupt upon pattern match.
0
WAKE_ON_MAGIC
0, RW
Wake on Magic Packet:
1 = Issue an interrupt upon reception of Magic packet.
0 = Do not issue an interrupt upon reception of Magic packet.
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8.6.40 Receive Status Register (RXFSTS)
This register provides status for receive functionality.
Table 51. Receive Status Register (RXFSTS), Address 0x0135
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
RESERVED
0, RO
RESERVED
7
SFD_ERR
0, R0, LH, SC
SFD Error:
1 = Packet with SFD error (without an 0x5D SFD byte) received.
0 = No SFD error seen.
6
BAD_CRC
0, R0, LH, SC
Bad CRC:
1 = A packet with a bad CRC was received.
0 = No bad CRC seen.
5
SCRON_HACK
0, R0, LH, SC
SecureOn Hack Attempt Flag:
1 = SecureOn Hack attempt seen.
0 = No SecureOn Hack attempt seen.
4
UCAST_RCVD
0, R0, LH, SC
Unicast Packet Received:
1 = A valid Unicast packet was received.
0 = No valid Unicast packet was received.
3
RESERVED
0, RO
RESERVED
2
BCAST_RCVD
0, R0, LH, SC
Broadcast Packet Received:
1 = A valid Broadcast packet was received.
0 = No valid Broadcast packet was received.
1
PATTERN_RCVD
0, R0, LH, SC
Pattern Match Received:
1 = A valid packet with the configured pattern was received.
0 = No valid packet with the configured pattern was received.
0
MAGIC_RCVD
0, R0, LH, SC
Magic Packet Received:
1 = A valid Magic packet was received.
0 = No valid Magic packet was received.
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8.6.41 Pattern Match Data Register 1 (RXFPMD1)
Table 52. Pattern Match Data Register 1 (RXFPMD1), Address 0x0136
BIT
15:0
BIT NAME
DEFAULT
PMATCH_DATA_15_0
0, RW
DESCRIPTION
Bits 15:0 of Perfect Match Data - used for DA (destination address)
match
8.6.42 Pattern Match Data Register 2 (RXFPMD2)
Table 53. Pattern Match Data Register 2 (RXFPMD2), address 0x0137
BIT
15:0
BIT NAME
DEFAULT
PMATCH_DATA_31_16
0, RW
DESCRIPTION
Bits 31:16 of Perfect Match Data - used for DA (destination address)
match
8.6.43 Pattern Match Data Register 3 (RXFPMD3)
Table 54. Pattern Match Data Register 3 (RXFPMD3), address 0x0138
BIT
15:0
BIT NAME
DEFAULT
PMATCH_DATA_ 47_32
0, RW
DESCRIPTION
Bits 47:32 of Perfect Match Data - used for DA (destination address)
match
8.6.44 SecureOn Pass Register 2 (RXFSOP1)
Table 55. SecureOn Pass Register 1 (RXFSOP1), Address 0x0139
BIT
15:0
BIT NAME
DEFAULT
SCRON_PASSWORD _15_0
0, RW
DESCRIPTION
Bits 15:0 of secure-on password for magic packet)
8.6.45 SecureOn Pass Register 2 (RXFSOP2)
Table 56. SecureOn Pass Register 2 (RXFSOP2), Address 0x013A
BIT
15:0
BIT NAME
DEFAULT
SCRON_PASSWORD _31_16
0, RW
DESCRIPTION
Bits 31:16 of secure-on password for magic packet
8.6.46 SecureOn Pass Register 3 (RXFSOP3)
Table 57. SecureOn Pass Register 3 (RXFSOP3), Address 0x013B
BIT
15:0
BIT NAME
DEFAULT
SCRON_PASSWORD _ 47_32
0, RW
DESCRIPTION
Bits 47:32 of secure-on password for magic packet
8.6.47 Receive Pattern Register 1 (RXFPAT1)
Table 58. Receive Pattern Register 1 (RXFPAT1), Address 0x013C
BIT
15:0
BIT NAME
PATTERN_BYTES_0_1
DEFAULT
0, RW
DESCRIPTION
Bytes 0 (LSbyte) + 1 of the configured pattern. Each byte can be
masked separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.48 Receive Pattern Register 2 (RXFPAT2)
Table 59. Receive Pattern Register 2 (RXFPAT2), Address 0x013D
BIT
15:0
96
BIT NAME
PATTERN_BYTES_2_3
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DEFAULT
0, RW
DESCRIPTION
Bytes 2 + 3 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
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8.6.49 Receive Pattern Register 3 (RXFPAT3)
Table 60. Receive Pattern Register 3 (RXFPAT3), Address 0x013E
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_4_5
0, RW
DESCRIPTION
Bytes 4 + 5 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.50 Receive Pattern Register 4 (RXFPAT4)
Table 61. Receive Pattern Register 4 (RXFPAT4), Address 0x013F
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_6_7
0, RW
DESCRIPTION
Bytes 6 + 7 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.51 Receive Pattern Register 5 (RXFPAT5)
Table 62. Receive Pattern Register 5 (RXFPAT5), Address 0x0140
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_8_9
0, RW
DESCRIPTION
Bytes 8 + 9 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.52 Receive Pattern Register 6 (RXFPAT6)
Table 63. Receive Pattern Register 6 (RXFPAT6), Address 0x0141
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_10_11
0, RW
DESCRIPTION
Bytes 10 + 11 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.53 Receive Pattern Register 7 (RXFPAT7)
Table 64. Receive Pattern Register 7 (RXFPAT7), Address 0x0142
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_12_13
0, RW
DESCRIPTION
Bytes 12 + 13 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.54 Receive Pattern Register 8 (RXFPAT8)
Table 65. Receive Pattern Register 8 (RXFPAT8), Address 0x0143
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_14_15
0, RW
DESCRIPTION
Bytes 0 14 + 15 of the configured pattern. Each byte can be
masked separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.55 Receive Pattern Register 9 (RXFPAT9)
Table 66. Receive Pattern Register 9 (RXFPAT9), Address 0x0144
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_16_17
0, RW.
DESCRIPTION
Bytes 16 + 17 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
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8.6.56 Receive Pattern Register 10 (RXFPAT10)
Table 67. Receive Pattern Register 10 (RXFPAT10), Address 0x0145
BIT
15:0
BIT NAME
PATTERN_BYTES_18_19
DEFAULT
0, RW
DESCRIPTION
Bytes 18 + 19 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.57 Receive Pattern Register 11 (RXFPAT11)
Table 68. Receive Pattern Register 11 (RXFPAT11), Address 0x0146
BIT
15:0
BIT NAME
PATTERN_BYTES_20_21
DEFAULT
0, RW
DESCRIPTION
Bytes 20 + 21 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.58 Receive Pattern Register 12 (RXFPAT12)
Table 69. Receive Pattern Register 12 (RXFPAT12), Address 0x0147
BIT
15:0
BIT NAME
PATTERN_BYTES_22_23
DEFAULT
0, RW
DESCRIPTION
Bytes 22 + 23 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.59 Receive Pattern Register 13 (RXFPAT13)
Table 70. Receive Pattern Register 13 (RXFPAT13), Address 0x0148
BIT
15:0
BIT NAME
PATTERN_BYTES_24_25
DEFAULT
0, RW
DESCRIPTION
Bytes 24 + 25 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.60 Receive Pattern Register 14 (RXFPAT14)
Table 71. Receive Pattern Register 14 (RXFPAT14), Address 0x0149
BIT
15:0
BIT NAME
PATTERN_BYTES_26_27
DEFAULT
0, RW
DESCRIPTION
Bytes 26 + 27 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.61 Receive Pattern Register 15 (RXFPAT15)
Table 72. Receive Pattern Register 15 (RXFPAT15), address 0x014A
BIT
15:0
BIT NAME
PATTERN_BYTES_28_29
DEFAULT
0, RW
DESCRIPTION
Bytes 28 + 29 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.62 Receive Pattern Register 16 (RXFPAT16)
Table 73. Receive Pattern Register 16 (RXFPAT16), Address 0x014B
BIT
15:0
98
BIT NAME
PATTERN_BYTES_30_31
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DEFAULT
0, RW
DESCRIPTION
Bytes 30 + 31 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
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8.6.63 Receive Pattern Register 17 (RXFPAT17)
Table 74. Receive Pattern Register 17 (RXFPAT17), Address 0x014C
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_32_33
0, RW
DESCRIPTION
Bytes 32 + 33 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.64 Receive Pattern Register 18 (RXFPAT18)
Table 75. Receive Pattern Register 18 (RXFPAT18), Address 0x014D
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_34_35
0, RW
DESCRIPTION
Bytes 34 + 35 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.65 Receive Pattern Register 19 (RXFPAT19)
Table 76. Receive Pattern Register 19 (RXFPAT19), Address 0x014E
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_36_37
0, RW
DESCRIPTION
Bytes 36 + 37 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.66 Receive Pattern Register 20 (RXFPAT20)
Table 77. Receive Pattern Register 20 (RXFPAT20), Address 0x014F
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_38_39
0, RW
DESCRIPTION
Bytes 38 + 39 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.67 Receive Pattern Register 21 (RXFPAT21)
Table 78. Receive Pattern Register 21 (RXFPAT21), Address 0x0150
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_38_39
0, RW
DESCRIPTION
Bytes 38 + 39 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.68 Receive Pattern Register 22 (RXFPAT22)
Table 79. Receive Pattern Register 22 (RXFPAT22), Address 0x0151
BIT
BIT NAME
15:0
DEFAULT
PATTERN_BYTES_42_43
0, RW
DESCRIPTION
Bytes 42 + 43 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.69 Receive Pattern Register 23 (RXFPAT23)
Table 80. Receive Pattern Register 23 (RXFPAT23), Address 0x0152
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_44_45
0, RW
DESCRIPTION
Bytes 44 + 45 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
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8.6.70 Receive Pattern Register 24 (RXFPAT24)
Table 81. Receive Pattern Register 24 (RXFPAT24), Address 0x0153
BIT
15:0
BIT NAME
PATTERN_BYTES_46_47
DEFAULT
0, RW
DESCRIPTION
Bytes 46 + 47 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.71 Receive Pattern Register 25 (RXFPAT25)
Table 82. Receive Pattern Register 25 (RXFPAT25), Address 0x0154
BIT
15:0
BIT NAME
PATTERN_BYTES_48_49
DEFAULT
0, RW
DESCRIPTION
Bytes 48 + 49 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.72 Receive Pattern Register 26 (RXFPAT26)
Table 83. Receive Pattern Register 26 (RXFPAT26), Address 0x0155
BIT
15:0
BIT NAME
PATTERN_BYTES_50_51
DEFAULT
0, RW
DESCRIPTION
Bytes 50 + 51 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.73 Receive Pattern Register 27 (RXFPAT27)
Table 84. Receive Pattern Register 27 (RXFPAT27), Address 0x0156
BIT
15:0
BIT NAME
PATTERN_BYTES_52_53
DEFAULT
0, RW
DESCRIPTION
Bytes 52 + 53 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.74 Receive Pattern Register 28 (RXFPAT28)
Table 85. Receive Pattern Register 28 (RXFPAT28), Address 0x0157
BIT
15:0
BIT NAME
PATTERN_BYTES_54_55
DEFAULT
0, RW
DESCRIPTION
Bytes 54 + 55 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.75 Receive Pattern Register 29 (RXFPAT29)
Table 86. Receive Pattern Register 29 (RXFPAT29), Address 0x0158
BIT
15:0
BIT NAME
PATTERN_BYTES_56_57
DEFAULT
0, RW
DESCRIPTION
Bytes 56 + 57 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.76 Receive Pattern Register 30 (RXFPAT30)
Table 87. Receive Pattern Register 30 (RXFPAT30), Address 0x0159
BIT
15:0
100
BIT NAME
PATTERN_BYTES_58_59
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0, RW
DESCRIPTION
Bytes 58 + 59 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
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8.6.77 Receive Pattern Register 31 (RXFPAT31)
Table 88. Receive Pattern Register 31 (RXFPAT31), Address 0x015A
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_0_1
0, RW
DESCRIPTION
Bytes 60 + 61 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.78 Receive Pattern Register 32 (RXFPAT32)
Table 89. Receive Pattern Register 32 (RXFPAT32), Address 0x015B
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_62_63
0, RW
DESCRIPTION
Bytes 62 + 63 of the configured pattern. Each byte can be masked
separately via the RXF_PATTERN_BYTE_MASK registers.
8.6.79 Receive Pattern Byte Mask Register 1 (RXFPBM1)
Table 90. Receive Pattern Byte Mask Register 1 (RXFPBM1), Address 0x015C
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_
MASK_0_15
0, RW
DESCRIPTION
Masks for bytes 0 to 15 of the pattern. A '1' indicates a mask for the
associated byte.
8.6.80 Receive Pattern Byte Mask Register 2 (RXFPBM2)
Table 91. Receive Pattern Byte Mask Register 2 (RXFPBM2), Address 0x015D
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_
MASK_16_31
0, RW
DESCRIPTION
Masks for bytes 16 to 31 of the pattern. A '1' indicates a mask for
the associated byte.
8.6.81 Receive Pattern Byte Mask Register 3 (RXFPBM3)
Table 92. Receive Pattern Byte Mask Register 3 (RXFPBM3), Address 0x015E
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_
MASK_32_47
0, RW
DESCRIPTION
Masks for bytes 32 to 47 of the pattern. A '1' indicates a mask for
the associated byte.
8.6.82 Receive Pattern Byte Mask Register 4 (RXFPBM4)
Table 93. Receive Pattern Byte Mask Register 4 (RXFPBM4), Address 0x015F
BIT
15:0
BIT NAME
DEFAULT
PATTERN_BYTES_
MASK_48_63
0, RW
DESCRIPTION
Masks for bytes 48 to 63 of the pattern. A '1' indicates a mask for
the associated byte.
8.6.83 Receive Pattern Control (RXFPATC)
Table 94. Receive Status Register (RXFSTS), Address 0x0161
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:6
RESERVED
0, RO
RESERVED: Writes ignored, read as 0.
5:0
PATTERN_START_POINT
0, RW
Number of bytes after SFD where comparison of the RX packet to
the configured pattern begins:
111111 - Start compare in the 64th byte after SFD
000000 - Start compare in the 1st byte after SFD
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8.6.84 I/O Configuration (IO_MUX_CFG)
Table 95. I/O Configuration (IO_MUX_CFG), Address 0x0170
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:13
RESERVED
0, RO
RESERVED
12:8
CLK_O_SEL
0 1100, RW
Clock Output Select:
01101 - 11111: RESERVED
01100: Reference clock (synchronous to XI input clock)
01011: Channel D transmit clock
01010: Channel C transmit clock
01001: Channel B transmit clock
01000: Channel A transmit clock
00111: Channel D receive clock divided by 5
00110: Channel C receive clock divided by 5
00101: Channel B receive clock divided by 5
00100: Channel A receive clock divided by 5
00011: Channel D receive clock
00010: Channel C receive clock
00001: Channel B receive clock
00000: Channel A receive clock
7
RESERVED
0, RO
RESERVED
6
CLK_O_DISABLE
Strap, RW
Clock Output Disable:
1 = Disable clock output on CLK_OUT pin.
0 = Enable clock output on CLK_OUT pin.
5
RESERVED
0, RO
RESERVED
4:0
IO_IMPEDANCE_CTRL
TRIM, RW
Impedance Control for MAC I/Os:
Output impedance approximate range from 35-70 ohms in 32 steps.
Lowest being 11110 and highest being 00000. Range and Step size
will vary with process.
Default is set to 50 ohms by trim. But the default register value can
vary by process. Non default values of MAC I/O impedance can be
used based on trace impedance. Mismatch between device and
trace impedance can cause voltage overshoot and undershoot.
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8.6.85 GPIO Mux Control Register 1 (GPIO_MUX_CTRL1)
This register is only available for PAP devices. It is not applicable to RGZ devices.
Table 96. GPIO Mux Control Register 1 (GPIO_MUX_CTRL1), Address 0x0171
BIT
15:12
BIT NAME
DEFAULT
RX_D7_GPIO_CTRL
RW, 0000
DESCRIPTION
RX_D7 GPIO Control:
1010 - 1111: RESERVED
1001: Constant '1'
1000: Constant '0'
0111: PRBS Errors / Loss of Sync
0110: LED 4
0101: RESERVED
0100: Energy Detect (1000Base-T and 100Base-TX only)
0011: WOL
0010: 1588 RX SFD
0001: 1588 TX SFD
0000: RX_D7
11:8
RX_D6_GPIO_CTRL
RW, 0000
RX_D6 GPIO Control:
1010 - 1111: RESERVED
1001: Constant '1'
1000: Constant '0'
0111: PRBS Errors / Loss of Sync
0110: LED 4
0101: RESERVED
0100: Energy Detect (1000Base-T and 100Base-TX only)
0011: WOL
0010: 1588 RX SFD
0001: 1588 TX SFD
0000: RX_D6
7:4
RX_D5_GPIO_CTRL
RW, 0000
RX_D5 GPIO Control:
1010 - 1111: RESERVED
1001: Constant '1'
1000: Constant '0'
0111: PRBS Errors / Loss of Sync
0110: LED 4
0101: RESERVED
0100: Energy Detect (1000Base-T and 100Base-TX only)
0011: WOL
0010: 1588 RX SFD
0001: 1588 TX SFD
0000: RX_D5
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Table 96. GPIO Mux Control Register 1 (GPIO_MUX_CTRL1), Address 0x0171 (continued)
BIT
3:0
BIT NAME
RX_D4_GPIO_CTRL
DEFAULT
RW, 0000
DESCRIPTION
RX_D4 GPIO Control:
1010 - 1111: RESERVED
1001: Constant '1'
1000: Constant '0'
0111: PRBS Errors / Loss of Sync
0110: LED 4
0101: RESERVED
0100: Energy Detect (1000Base-T and 100Base-TX only)
0011: WOL
0010: 1588 RX SFD
0001: 1588 TX SFD
0000: RX_D4
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8.6.86 GPIO Mux Control Register 2 (GPIO_MUX_CTRL2)
This description is only for PAP devices. For RGZ devices, refer to GPIO Mux Control Register
(GPIO_MUX_CTRL)
Table 97. GPIO Mux Control Register 2 (GPIO_MUX_CTRL2), Address 0x0172
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:12
RESERVED
0, RO
RESERVED
11:8
CRS_GPIO_CTRL
RW, 0000
CRS GPIO Control:
1010 - 1111: RESERVED
1001: Constant '1'
1000: Constant '0'
0111: PRBS Errors / Loss of Sync
0110: LED 4
0101: RESERVED
0100: Energy Detect (1000Base-T and 100Base-TX only)
0011: WOL
0010: 1588 RX SFD
0001: 1588 TX SFD
0000: CRS
7:4
COL_GPIO_CTRL
RW, 0000
COL GPIO Control:
1010 - 1111: RESERVED
1001: Constant '1'
1000: Constant '0'
0111: PRBS Errors / Loss of Sync
0110: LED 4
0101: RESERVED
0100: Energy Detect (1000Base-T and 100Base-TX only)
0011: WOL
0010: 1588 RX SFD
0001: 1588 TX SFD
0000: COL
3:0
RX_ER_GPIO_CTRL
RW, 0000
RX_ER GPIO Control:
1010 - 1111: RESERVED
1001: Constant '1'
1000: Constant '0'
0111: PRBS Errors / Loss of Sync
0110: LED 4
0101: RESERVED
0100: Energy Detect (1000Base-T and 100Base-TX only)
0011: WOL
0010: 1588 RX SFD
0001: 1588 TX SFD
0000: RX_ER
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8.6.87 GPIO Mux Control Register (GPIO_MUX_CTRL)
This description is only for RGZ devices. For PAP devices refer to GPIO Mux Control Register 2
(GPIO_MUX_CTRL2)
Table 98. GPIO Mux Control Register (GPIO_MUX_CTRL), Address 0x0172
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
RESERVED
0, RO
RESERVED
7:4
GPIO_1_CTRL
RW, 0000
GPIO_1 Control:
1010 - 1111: RESERVED
1001: Constant '1'
1000: Constant '0'
0111: PRBS Errors / Loss of Sync
0110: LED 4
0101: LPI On
0100: Energy Detect (1000Base-T and 100Base-TX only)
0011: WOL
0010: 1588 RX SFD
0001: 1588 TX SFD
0000: COL
3:0
GPIO_0_CTRL
RW, 0000
GPIO_0 Control:
1010 - 1111: RESERVED
1001: Constant '1'
1000: Constant '0'
0111: PRBS Errors / Loss of Sync
0110: LED 4
0101: LPI On
0100: Energy Detect (1000Base-T and 100Base-TX only)
0011: WOL
0010: 1588 RX SFD
0001: 1588 TX SFD
0000: RX_ER
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8.6.88 TDR General Configuration Register 1 (TDR_GEN_CFG1)
Table 99. TDR General Configuration Register 1 (TDR_GEN_CFG1), Address 0x0180
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:13
RESERVED
0, RO
RESERVED
12
TDR_CH_CD_BYPASS
0, RW
TDR Bypass for Channel C and D:
1 = Bypass channel C and D in TDR tests.
0 = Normal operation.
11
TDR_CROSS_MODE_DIS
0, RW
Disable TDR Cross Mode:
1 = Disable cross mode option. Do not check cross channels. Only
listen to the channel being used for transmit.
0 = Normal operation.
10
TDR_NLP_CHECK
1, RW
TDR NLP Check:
1 = Check for NLPs during silence.
0 = Normal operation.
9:7
TDR_AVG_NUM
110, RW
Number Of TDR Cycles to Average:
111: RESERVED: Writes ignored, read as 0.
110: 64 TDR cycles
101: 32 TDR cycles
100: 16 TDR cycles
011: 8 TDR cycles
010: 4 TDR cycles
001: 2 TDR cycles
000: 1 TDR cycle
6:4
TDR_SEG_NUM
101, RW
Set the number of TDR segments to check.
3:0
TDR_CYCLE_TIME
010, RW
Set the time for each TDR cycle. Value is measured in
microseconds.
Table 100. TDR Peak Locations Register 1 (TDR_PEAKS_LOC_1), address 0x0190
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
TDR_PEAKS_LOC_A_1
0, RO
Location of the second peak discovered by the TDR mechanism on
channel A. The value of these bits is translated into distance from
the PHY.
7:0
TDR_PEAKS_LOC_A_0
0, RO
Location of the first peak discovered by the TDR mechanism on
channel A. The value of these bits is translated into distance from
the PHY.
Table 101. TDR Peak Locations Register 2 (TDR_PEAKS_LOC_2), address 0x0191
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
TDR_PEAKS_LOC_A_3
0, RO
Location of the fourth peak discovered by the TDR mechanism on
channel A. The value of these bits is translated into distance from
the PHY.
7:0
TDR_PEAKS_LOC_A_2
0, RO
Location of the third peak discovered by the TDR mechanism on
channel A. The value of these bits is translated into distance from
the PHY.
Table 102. TDR Peak Locations Register 3 (TDR_PEAKS_LOC_3), address 0x0192
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
TDR_PEAKS_LOC_B_0
0, RO
Location of the first peak discovered by the TDR mechanism on
channel B. The value of these bits is translated into distance from
the PHY.
7:0
TDR_PEAKS_LOC_A_4
0, RO
Location of the fifth peak discovered by the TDR mechanism on
channel A. The value of these bits is translated into distance from
the PHY.
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Table 103. TDR Peak Locations Register 4 (TDR_PEAKS_LOC_4), address 0x0193
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
TDR_PEAKS_LOC_B_2
0, RO
Location of the third peak discovered by the TDR mechanism on
channel B. The value of these bits is translated into distance from
the PHY.
7:0
TDR_PEAKS_LOC_B_1
0, RO
Location of the second peak discovered by the TDR mechanism on
channel B. The value of these bits is translated into distance from
the PHY.
Table 104. TDR Peak Locations Register 5 (TDR_PEAKS_LOC_5), address 0x0194
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
TDR_PEAKS_LOC_B_4
0, RO
Location of the fifth peak discovered by the TDR mechanism on
channel B. The value of these bits is translated into distance from
the PHY.
7:0
TDR_PEAKS_LOC_B_3
0, RO
Location of the fourth peak discovered by the TDR mechanism on
channel B. The value of these bits is translated into distance from
the PHY.
Table 105. TDR Peak Locations Register 6 (TDR_PEAKS_LOC_6), address 0x0195
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
TDR_PEAKS_LOC_C_1
0, RO
Location of the second peak discovered by the TDR mechanism on
channel C. The value of these bits is translated into distance from
the PHY.
7:0
TDR_PEAKS_LOC_C_0
0, RO
Location of the first peak discovered by the TDR mechanism on
channel C. The value of these bits is translated into distance from
the PHY.
Table 106. TDR Peak Locations Register 7 (TDR_PEAKS_LOC_7), address 0x0196
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
TDR_PEAKS_LOC_C_3
0, RO
Location of the fourth peak discovered by the TDR mechanism on
channel C. The value of these bits is translated into distance from
the PHY.
7:0
TDR_PEAKS_LOC_C_2
0, RO
Location of the third peak discovered by the TDR mechanism on
channel C. The value of these bits is translated into distance from
the PHY.
Table 107. TDR Peak Locations Register 8 (TDR_PEAKS_LOC_8), address 0x0197
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
TDR_PEAKS_LOC_D_0
0, RO
Location of the first peak discovered by the TDR mechanism on
channel D. The value of these bits is translated into distance from
the PHY.
7:0
TDR_PEAKS_LOC_C_4
0, RO
Location of the fifth peak discovered by the TDR mechanism on
channel C. The value of these bits is translated into distance from
the PHY.
Table 108. TDR Peak Locations Register 9 (TDR_PEAKS_LOC_9), address 0x0198
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
TDR_PEAKS_LOC_D_2
0, RO
Location of the third peak discovered by the TDR mechanism on
channel D. The value of these bits is translated into distance from
the PHY.
7:0
TDR_PEAKS_LOC_D_1
0, RO
Location of the second peak discovered by the TDR mechanism on
channel D. The value of these bits is translated into distance from
the PHY.
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Table 109. TDR Peak Locations Register 10 (TDR_PEAKS_LOC_10), address 0x0199
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
TDR_PEAKS_LOC_D_4
0, RO
Location of the fifth peak discovered by the TDR mechanism on
channel D. The value of these bits is translated into distance from
the PHY.
7:0
TDR_PEAKS_LOC_D_3
0, RO
Location of the fourth peak discovered by the TDR mechanism on
channel D. The value of these bits is translated into distance from
the PHY.
Table 110. TDR Peak Amplitudes Register 1 (TDR_PEAKS_AMP_1), address 0x019A
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED
14:8
TDR_PEAKS_AMP_A_1
0, RO
Amplitude of the second peak discovered by the TDR mechanism
on channel A. The value of these bits is translated into type of cable
fault and-or interference.
7
RESERVED
0, RO
RESERVED
6:0
TDR_PEAKS_AMP_A_0
0, RO
Amplitude of the first peak discovered by the TDR mechanism on
channel A. The value of these bits is translated into type of cable
fault and-or interference.
Table 111. TDR Peak Amplitudes Register 2 (TDR_PEAKS_AMP_2), address 0x019B
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED
14:8
TDR_PEAKS_AMP_A_3
0, RO
Amplitude of the fourth peak discovered by the TDR mechanism on
channel A. The value of these bits is translated into type of cable
fault and-or interference.
7
RESERVED
0, RO
RESERVED
6:0
TDR_PEAKS_AMP_A_2
0, RO
Amplitude of the third peak discovered by the TDR mechanism on
channel A. The value of these bits is translated into type of cable
fault and-or interference.
Table 112. TDR Peak Amplitudes Register 3 (TDR_PEAKS_AMP_3), address 0x019C
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED
14:8
TDR_PEAKS_AMP_B_0
0, RO
Amplitude of the first peak discovered by the TDR mechanism on
channel B. The value of these bits is translated into type of cable
fault and-or interference.
7
RESERVED
0, RO
RESERVED
6:0
TDR_PEAKS_AMP_A_4
0, RO
Amplitude of the fifth peak discovered by the TDR mechanism on
channel A. The value of these bits is translated into type of cable
fault and-or interference.
Table 113. TDR Peak Amplitudes Register 4 (TDR_PEAKS_AMP_4),address 0x019D
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED
14:8
TDR_PEAKS_AMP_B_2
0, RO
Amplitude of the third peak discovered by the TDR mechanism on
channel B. The value of these bits is translated into type of cable
fault and-or interference.
7
RESERVED
0, RO
RESERVED
6:0
TDR_PEAKS_AMP_B_1
0, RO
Amplitude of the second peak discovered by the TDR mechanism
on channel B. The value of these bits is translated into type of cable
fault and-or interference.
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Table 114. TDR Peak Amplitudes Register 5 (TDR_PEAKS_AMP_5), address 0x019E
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED
14:8
TDR_PEAKS_AMP_B_4
0, RO
Amplitude of the fifth peak discovered by the TDR mechanism on
channel B. The value of these bits is translated into type of cable
fault and-or interference.
7
RESERVED
0, RO
RESERVED
6:0
TDR_PEAKS_AMP_B_3
0, RO
Amplitude of the fourth peak discovered by the TDR mechanism on
channel B. The value of these bits is translated into type of cable
fault and-or interference.
Table 115. TDR Peak Amplitudes Register 6 (TDR_PEAKS_AMP_6), address 0x019F
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED
14:8
TDR_PEAKS_AMP_C_1
0, RO
Amplitude of the second peak discovered by the TDR mechanism
on channel C. The value of these bits is translated into type of cable
fault and-or interference.
7
RESERVED
0, RO
RESERVED
6:0
TDR_PEAKS_AMP_C_0
0, RO
Amplitude of the first peak discovered by the TDR mechanism on
channel C. The value of these bits is translated into type of cable
fault and-or interference.
Table 116. TDR Peak Amplitudes Register 7 (TDR_PEAKS_AMP_7), address 0x01A0
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED
14:8
TDR_PEAKS_AMP_C_3
0, RO
Amplitude of the fourth peak discovered by the TDR mechanism on
channel C. The value of these bits is translated into type of cable
fault and-or interference.
7
RESERVED
0, RO
RESERVED
6:0
TDR_PEAKS_AMP_C_2
0, RO
Amplitude of the third peak discovered by the TDR mechanism on
channel C. The value of these bits is translated into type of cable
fault and-or interference.
Table 117. TDR Peak Amplitudes Register 8 (TDR_PEAKS_AMP_8), address 0x01A1
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED
14:8
TDR_PEAKS_AMP_D_0
0, RO
Amplitude of the first peak discovered by the TDR mechanism on
channel D. The value of these bits is translated into type of cable
fault and-or interference.
7
RESERVED
0, RO
RESERVED
6:0
TDR_PEAKS_AMP_C_4
0, RO
Amplitude of the fifth peak discovered by the TDR mechanism on
channel C. The value of these bits is translated into type of cable
fault and-or interference.
Table 118. TDR Peak Amplitudes Register 9 (TDR_PEAKS_AMP_9), address 0x01A2
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED
14:8
TDR_PEAKS_AMP_D_2
0, RO
Amplitude of the third peak discovered by the TDR mechanism on
channel D. The value of these bits is translated into type of cable
fault and-or interference.
7
RESERVED
0, RO
RESERVED
6:0
TDR_PEAKS_AMP_D_1
0, RO
Amplitude of the second peak discovered by the TDR mechanism
on channel D. The value of these bits is translated into type of cable
fault and-or interference.
110
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Table 119. TDR Peak Amplitudes Register 10 (TDR_PEAKS_AMP_10),address 0x01A3
BIT
BIT NAME
DEFAULT
DESCRIPTION
15
RESERVED
0, RO
RESERVED
14:8
TDR_PEAKS_AMP_D_4
0, RO
Amplitude of the fifth peak discovered by the TDR mechanism on
channel D. The value of these bits is translated into type of cable
fault and-or interference.
7
RESERVED
0, RO
RESERVED
6:0
TDR_PEAKS_AMP_D_3
0, RO
Amplitude of the fourth peak discovered by the TDR mechanism on
channel D. The value of these bits is translated into type of cable
fault and-or interference.
Table 120. TDR General Status (TDR_GEN_STATUS), address 0x01A4
BIT
BIT NAME
DEFAULT
15:12
RESERVED
11
TDR_P_LOC_CROSS_MODE_D 0, RO
0, RO
DESCRIPTION
RESERVED
Cross Detect on Channel D:
1 = Cross reflection detected on channel D. Indicates a short
between channels.
0 = No cross reflection detected.
10
TDR_P_LOC_CROSS_MODE_C 0, RO
Cross Detect on Channel C:
1 = Cross reflection detected on channel C. Indicates a short
between channels.
0 = No cross reflection detected.
9
TDR_P_LOC_CROSS_MODE_B 0, RO
Cross Detect on Channel B:
1 = Cross reflection detected on channel B. Indicates a short
between channels.
0 = No cross reflection detected.
8
TDR_P_LOC_CROSS_MODE_A 0, RO
Cross Detect on Channel A:
1 = Cross reflection detected on channel A. Indicates a short
between channels.
0 = No cross reflection detected.
7
TDR_P_LOC_OVERFLOW_D
0, RO
Peak Overflow on Channel D:
1 = More than 5 reflections were detected on channel D.
0 = Normal operation.
6
TDR_P_LOC_OVERFLOW_C
0, RO
Peak Overflow on Channel C:
1 = More than 5 reflections were detected on channel C.
0 = Normal operation.
5
TDR_P_LOC_OVERFLOW_B
0, RO
Peak Overflow on Channel B:
1 = More than 5 reflections were detected on channel B.
0 = Normal operation.
4
TDR_P_LOC_OVERFLOW_A
0, RO
Peak Overflow on Channel A:
1 = More than 5 reflections were detected on channel A.
0 = Normal operation.
3:0
RESERVED
0, RO
RESERVED
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8.6.89 Advanced Link Cable Diagnostics Control Register (ALCD_CTRL)
Table 121. Advanced Link Cable Diagnostics Control Register (ALCD_CTRL), Address 0x01A7
BIT
BIT NAME
DEFAULT
DESCRIPTION
15:8
ALCD_SUM
0000 0000, RO
ALCD result
7:6
RESERVED
0, RO
RESERVED
5
ALCD_SUM_DONE
0, RO
ALCD Complete:
1 = ALCD process has completed.
0 = ALCD process has not completed.
4
ALCD_CLEAR
0, RW, SC
Clear ALCD:
1 = Reset the ALCD results.
3:0
RESERVED
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0, RO
RESERVED
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9 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
The DP83867 is a single port 10/100/1000 Ethernet PHY. It supports connections to an Ethernet MAC via RGMII
or GMII. Connections to the Ethernet media are made via the IEEE 802.3 defined Media Dependent Interface.
DP83867IRRGZ/CRRGZ support only RGMII.
When using the device for Ethernet application, it is necessary to meet certain requirements for normal operation
of the device. The following typical application and design requirements can be used for selecting appropriate
component values for DP83867.
9.2 Typical Application
MII (PAP)
GMII (PAP)
RGMII (PAP, RGZ)
10BASE-Te
100BASE-TX
1000BASE-T
DP83867
10/100/1000 Mbps
Ethernet Physical Layer
Ethernet MAC
25 MHz
Crystal or Oscillator
Magnetics
RJ-45
Status
LEDs
Figure 27. Typical DP83867 Application
9.2.1 Design Requirements
The design requirements for the DP83867 are:
• VDDA2P5 = 2.5 V
• VDD1P1 (PAP) = 1.1 V
• VDD1P1 (PAP) = 1.0 V
• VDDIO = 3.3 V, 2.5 V, or 1.8 V
• Clock Input = 25 MHz
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Typical Application (continued)
9.2.1.1 Cable Line Driver
The line driver implementation is designed to support simple connections to the transformer and the connector.
The DP83867 includes integrated terminations so no external termination resistors are required.
The connection diagram for the cable line driver is shown in Figure 28.
TD_P_A
TD_M_A
TD_P_B
TD_M_B
TD_P_C
TD_M_C
TD_P_D
TD_M_D
1:1 Transformer
RJ-45 Connector
Figure 28. Magnetics Connections
9.2.1.2 Clock In (XI) Recommendation
If an external clock source is used, XO should be left floating. For a 1.8-V clock source, XI should be tied to the
clock source. For a 3.3-V or 2.5-V clock source, a capacitor divder is recommended as shown in Figure 29. The
recommended values for the C1 and C2 capacitors is 27 pF.
XI
XO
3.3V or 2.5V
Clock Source
CD1
CD2
Figure 29. Clock Divider
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Typical Application (continued)
The CMOS 25-MHz oscillator specifications are listed in Table 122.
Table 122. 25-MHz Oscillator Specifications
PARAMETER
MIN
TYP
Frequency
MAX
25
CONDITION
MHz
Frequency
Tolerance
± 50
Frequency Stability
Rise / Fall Time
Symmetry
UNITS
40%
ppm
Operational
Temperature
± 50
ppm
1 year aging
5
nsec
20% - 80%
60%
Duty Cycle
9.2.1.3 Crystal Recommendations
A 25-MHz, parallel, 18-pF load crystal resonator should be used if a crystal source is desired. Figure 30 shows a
typical connection for a crystal resonator circuit. The load capacitor values will vary with the crystal vendors;
check with the vendor for the recommended loads.
XI
XO
R1
CL1
CL2
Figure 30. Crystal Oscillator Circuit
As a starting point for evaluating an oscillator circuit, if the requirements for the crystal are not known, CL1 and
CL2 should be set at 27 pF, and R1 should be set at 0 Ω.
Specification for 25-MHz crystal are listed in Table 123.
Table 123. 25MHz Crystal Specifications
PARAMETER
MIN
TYP
Frequency
MAX
25
UNITS
CONDITION
MHz
Frequency
Tolerance
± 50
ppm
Operational
Temperature
Frequency Stability
± 50
ppm
1 year aging
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9.2.2 Detailed Design Procedure
9.2.2.1 MAC Interface
The Media Independent Interface (RGMII / GMII) connects the DP83867 to the Media Access Controller (MAC).
The MAC may in fact be a discrete device, integrated into a microprocessor, CPU or FPGA.
9.2.2.1.1 RGMII Layout Guidelines
•
•
•
•
•
•
RGMII signals are single-ended signals.
Traces should be routed with impedance of 50 Ω to ground.
Skew between TXD[3:0] lines should be less than 11ps, which correlates to 60mil for standard FR4.
Skew between RXD[3:0] lines should be less than 11ps, which correlates to 60mil for standard FR4.
Keep trace lengths as short as possible, less than 2 inches recommended, less than 6 inches maximum
length.
Configurable clock skew for GTX_CLK and RX_CLK.
– Clock skew for RX and TX paths can be optimized independently.
– Clock skew is adjustable in 0.25ns increments (via register).
9.2.2.1.2 GMII Layout Guidelines
•
•
•
GMII signals are single-ended signals.
Traces should be routed with impedance of 50 Ω to ground.
Keep trace lengths as short as possible, less than 2 inches recommended, less than 6 inches maximum
length.
9.2.2.2 Media Dependent Interface (MDI)
The Media Dependent Interface (MDI) connects the DP83867 to the transformer and the Ethernet network.
9.2.2.2.1 MDI Layout Guidelines
•
•
•
•
•
•
116
MDI traces should be 50 Ω to ground or 100 Ω differential controlled impedance.
Route MDI traces to transformer on the same layer.
Use a metal shielded RJ-45 connector, and connect the shield to chassis ground.
Use magnetics with integrated common mode choking devices.
Void supplies and ground beneath magnetics.
Do not overlap the circuit and chassis ground planes, keep them isolated. Instead, make chassis ground an
isolated island and make a void between the chassis and circuit ground. Connecting circuit and chassis
planes using a size 1206 resistor and capacitor on either side of the connector is a good practice.
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10 Power Supply Recommendations
The DP83867 is capable of operating with as few as two or three supplies. The I/O power supply can also be
operated independently of the main device power supplies in order to provide flexibility for the MAC interface.
The connection diagrams for the two supply and three supply configurations are shown in Figure 31 and
Figure 32.
VDDIO
VDDIO
Supply
0.1 PF
1 PF
VDDIO
10 PF
10 nF
0.1 PF
1 PF
0.1 PF
1 PF
0.1 PF 10 nF
1 PF
0.1 PF
1 PF
0.1 PF
1.1V
(1.0V)
Supply
VDD1P1
(VDD1P0)
1 PF
VDDIO
0.1 PF
VDD1P1
(VDD1P0)
10 PF
VDD1P1
(VDD1P0)
1 PF
VDD1P1
(VDD1P0)
2.5V
Supply
0.1 PF
10 PF
10 nF
0.1 PF
VDDA2P5
VDDA1P8
VDDA2P5
VDDA1P8
1 PF
1 PF
GND
(Die Attach Pad
For two supply configuration, both VDDA1P8 pins must be left unconnected.
RGZ devices support 1.0V on VDD1P0 pins
Place 1µF decoupling capacitors as close as possible to component VDD pins.
VDDIO may be 3.3 V or 2.5 V or 1.8 V.
No Components should be connected to VDDA1P8 pins in Two Supply Configuration.
Figure 31. Two Supply Configuration
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VDDIO
VDDIO
Supply
0.1 PF
1 PF
VDDIO
10 PF
10 nF
0.1 PF
1 PF
0.1 PF
1 PF
0.1 PF 10 nF
1 PF
0.1 PF
1 PF
0.1 PF
1 PF
0.1 PF
1 PF
0.1 PF 10 nF
1.1V
(1.0V)
Supply
VDD1P1
(VDD1P0)
1 PF
VDDIO
0.1 PF
VDD1P1
(VDD1P0)
10 PF
VDD1P1
(VDD1P0)
1 PF
VDD1P1
(VDD1P0)
VDDA2P5
2.5V
Supply
0.1 PF
1 PF
VDDA2P5
10 PF
10 nF
0.1 PF
VDDA1P8
1.8V
Supply
VDDA1P8
1 PF
10 PF
GND
(Die Attach Pad
Place 1µF decoupling capacitors as close as possible to component VDD pins.
RGZ devices support 1.0V on VDD1P0 pins
Note: VDDIO may be 3.3 V or 2.5 V or 1.8 V.
Figure 32. Three Supply Configuration
There is no requirement for the sequence of the supplies when operating in 2 supply mode.
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When operating in 3 supply mode, the 1.8-V VDDA1P8 supply must be stable within 25ms of the 2.5-V
VDDA2P5 supply ramping up. There is no sequencing requirement for other supplies when operating in 3 supply
mode.
When powering down the DP83867, the 1.8-V supply should be brought down before the 2.5-V supply.
VDDA2P5
tt1t
VDDA1P8
Figure 33. Three Supply Mode Power Supply Sequence Diagram
Table 124. Three Supply Mode Power Supply Sequence
PARAMETER
T1
TEST CONDITIONS
MIN
Beginning of VDDA2P5 ramp up
to VDDA1P8 stable
NOM
0
MAX
25
UNIT
ms
NOTE
If the 2.5-V power supply provides power to DP83867 devices only, the 1.8-V supply may
ramp up any time before 2.5-V.
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11 Layout
11.1 Signal Traces
PCB traces are lossy and long traces can degrade the signal quality. Traces should be kept short as possible.
Unless mentioned otherwise, all signal traces should be 50Ω single ended impedance. Differential traces should
be 50Ω single ended and 100Ω differential. Care should be taken that the impedance is constant throughout.
Impedance discontinuities will cause reflections leading to EMI & signal integrity problems. Stubs should be
avoided on all signal traces, especially the differential signal pairs. See Figure 34
Within the differential pairs, the trace lengths should be run parallel to each other and matched in length.
Matched lengths minimize delay differences, avoiding an increase in common mode noise and increased EMI.
Length matching is also important on MAC interface. All Transmit signal traces should be length matched to each
other and all Receive signal traces should be length matched to each other.
Ideally, there should be no crossover or via on the signal paths. Vias present impedance discontinuities and
should be minimized. Route an entire trace pair on a single layer if possible.
Figure 34. Avoiding Stubs in a Differential Signal Pair
Signals on different layers should not cross each other without at least one return path plane between them.
Coupling between traces is also an important factor. Unwanted coupling can cause cross talk problems.
Differential pairs on the other hand, should have a constant coupling distance between them.
For convenience & efficient layout process, start by routing the critical signals first.
11.2 Return path
A general best practice is to have a solid return path beneath all signal traces. This return path can be a
continuous ground or DC power plane. Reducing the width of the return path width can potentially affect the
impedance of the signal trace. This effect is more prominent when the width of the return path is comparable to
the width of the signal trace. Breaks in return path beneath the signal traces should be avoided at all cost. A
signal crossing a plane split may cause unpredictable return path currents and would likely impact signal quality
as well, potentially creating EMI problems. See Figure 35
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Return path (continued)
Figure 35. Differential Signal Pair-Plane Crossing
11.3 Transformer Layout
There should be no metal layer running beneath the transformer. Transformers can inject noise in metal beneath
them which can affect the performance of the system.
11.4 Metal Pour
All metal pours which are not signals or power should be tied to ground. There should be no floating metal on the
system. There should be no metal between the differential traces.
11.5 PCB Layer Stacking
To meet signal integrity and performance requirements, at minimum a four-layer PCB should be used. However
a 6 layer board is recommended. See Figure 36 for the recommended layer stack ups for 4, 6 and 8-layer
boards. These are recommendations not requirements, other configurations can be used as per system
requirements.
xxx
xxx
Legend
Ground
High-speed signal
VDD supply
xxx
xx xxxxx
4-Layer
6-Layer
8-Layer
Figure 36. Recommended Layer Stack Up
Within a PCB, it may be desirable to run traces using different methods, microstrip vs. stripline, depending on the
location of the signal on the PCB. For example, it may be desirable to change layer stacking where an isolated
chassis ground plane is used. Figure 37 illustrates alternative PCB stacking options.
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PCB Layer Stacking (continued)
xxx
xxxxxx
xxx
Legend
Chassis ground
High-speed signal
VDD supply
Figure 37. Alternative Layer Stack Up
11.6 Layout Example
Plane Coupling
Component
Transformer
(if not
Integrated in
RJ45)
PHY
Component
RJ45
Connector
Plane Coupling
Component
Note: Power/Ground Planes
Voided under Transformer
System Power/Ground
Planes
Chassis Ground
Plane
Figure 38. Layout Example
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12 Device and Documentation Support
12.1 Documentation Support
12.1.1 Related Documentation
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application
report, SPRA953.
12.2 Related Links
The table below lists quick access links. Categories include technical documents, support and community
resources, tools and software, and quick access to sample or buy.
Table 125. Related Links
PARTS
PRODUCT FOLDER
SAMPLE & BUY
TECHNICAL
DOCUMENTS
TOOLS &
SOFTWARE
SUPPORT &
COMMUNITY
DP83867IRPAP
Click here
Click here
Click here
Click here
Click here
DP83867IRRGZ
Click here
Click here
Click here
Click here
Click here
DP83867CRRGZ
Click here
Click here
Click here
Click here
Click here
12.3 Receiving Notification of Documentation Updates
To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper
right corner, click on Alert me to register and receive a weekly digest of any product information that has
changed. For change details, review the revision history included in any revised document.
12.4 Community Resources
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of
Use.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
12.5 Trademarks
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
12.6 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
12.7 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
13 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
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PACKAGE OPTION ADDENDUM
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PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
DP83867CRRGZR
ACTIVE
VQFN
RGZ
48
2500
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-3-260C-168 HR
0 to 70
DP83867CR
DP83867CRRGZT
ACTIVE
VQFN
RGZ
48
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-3-260C-168 HR
0 to 70
DP83867CR
DP83867IRPAPR
ACTIVE
HTQFP
PAP
64
1000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-3-260C-168 HR
-40 to 85
DP83867IR
DP83867IRPAPT
ACTIVE
HTQFP
PAP
64
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-3-260C-168 HR
-40 to 85
DP83867IR
DP83867IRRGZR
ACTIVE
VQFN
RGZ
48
2500
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-3-260C-168 HR
-40 to 85
DP83867IR
DP83867IRRGZT
ACTIVE
VQFN
RGZ
48
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-3-260C-168 HR
-40 to 85
DP83867IR
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
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23-Jun-2016
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
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Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
23-Jun-2016
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
DP83867CRRGZR
Package Package Pins
Type Drawing
VQFN
RGZ
48
DP83867CRRGZT
VQFN
RGZ
DP83867IRPAPR
HTQFP
PAP
DP83867IRRGZR
VQFN
DP83867IRRGZT
VQFN
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
K0
(mm)
P1
(mm)
W
Pin1
(mm) Quadrant
7.3
1.5
12.0
16.0
Q1
2500
330.0
16.4
48
250
178.0
16.4
7.3
7.3
1.5
12.0
16.0
Q1
64
1000
330.0
24.4
13.0
13.0
1.5
16.0
24.0
Q2
RGZ
48
2500
330.0
16.4
7.3
7.3
1.5
12.0
16.0
Q1
RGZ
48
250
178.0
16.4
7.3
7.3
1.5
12.0
16.0
Q1
Pack Materials-Page 1
7.3
B0
(mm)
PACKAGE MATERIALS INFORMATION
www.ti.com
23-Jun-2016
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
DP83867CRRGZR
VQFN
RGZ
48
2500
367.0
367.0
38.0
DP83867CRRGZT
VQFN
RGZ
48
250
213.0
191.0
55.0
DP83867IRPAPR
HTQFP
PAP
64
1000
367.0
367.0
45.0
DP83867IRRGZR
VQFN
RGZ
48
2500
367.0
367.0
38.0
DP83867IRRGZT
VQFN
RGZ
48
250
213.0
191.0
55.0
Pack Materials-Page 2
www.ti.com
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