MICROSEMI PD69008

PD69008 - 8 Ports Power Over Ethernet Manager
Description _________________
Microsemi’s PD69008 Power over Ethernet (PoE)
Manager chip integrates power, analog and state of
the art embedded core logic into a single 80-pin,
plastic QFP package. The device is used in Ethernet
switches and Midspans to enable network devices to
share power and data over the same cable.
PD69008 device is an 8-port, mixed-signal, highvoltage Power over Ethernet driver. It enables
detection of IEEE802.3af-2003 compliant PDs
(Powered Devices) and IEEE802.3AT High Power
Devices, thus, ensuring safe power feeding and
disconnection of ports. With full digital control via a
serial communication interface and a minimum of
external components, the device integrates into multiport and highly populated Ethernet switches and
routers.
The PD69008 executes all real time functions as
specified in the IEEE802.3af-2003 (“AF”) standard
and IEEE802.3at High Power (“AT”) functionality,
including load detection, “AF” and “AT” classification
and port status monitoring. In addition it performs
system level activities such as power management
and MIB support for system management. The PoE
device is designed to detect and disable
disconnected ports, utilizing both DC and AC
disconnection methods, as specified in the
IEEE 802.3af-2003 standard.
The PD69008 is designed to support 2 main
configurations:
• Auto mode: For Basic ”AF” and “AT” PSE
equipment
• Enhanced mode: For High End, Extended
features set of AF and AT PSE equipment
Port_neg0
Sense_Neg
61
port_sense0
AGND2
62
64
1
60
LSC/ GPIO3
Vport_pos1
2
59
Vport_pos2
3
58
LSD/ GPIO2
CS_EEPROM_n/ LSL /
Interrupt_n
Vport_pos3
4
57
Vperi
Vport_pos4
5
56
Ext_reg
Vport_pos5
6
55
ADC2p5
Vport_pos6
7
54
QGND
Vport_pos7
8
53
I2CINI
NC
9
52
Vcc2p5
NC
10
51
ASIC_INI
NC
11
50
Iref
NC
12
SDA
SDA_out / Test_mode
15
46
SCL
16
DGND2
17
Good0/GPIO0
18
Good1/GPIO1
19
Date Code
45
SCK
44
MOSI
43
42
41
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
I2C or UART Host interface
Serial communication protocol backwards
compatible with PD63000 and PDIC66000
Added monitoring
Extended parameters setting
Port matrix for flexible PCB Layout
Field upgradeable software
Emergency Power Management with four power
supplies
Ordering Information __________
Part number
MISO
CS_n
Disable_ports_n
40
DGND1
38
39
NC
NC
37
35
36
NC
NC
NC
34
NC
32
33
NC
NC
31
NC
30
NC
29
NC
28
NC
27
Port_neg7
26
24
25
gate_7
gate_6
port_sense7
22
23
port_sense6
AGND1
Port_neg6
21
20
Copyright © 2009
Rev. 1.0, 2009-03-15
♦
♦
♦
♦
♦
♦
♦
Fully IEEE802.3af-2003 compliant
Designed to support IEEE802.3at including twoevent classification
Supports pre-standard PD detection
Supports Cisco devices detection
IETF Power Ethernet MIB (RFC 3621) compliant
Single DC voltage input (44v-57v)
Wide temperature range: -40° C to +85° C
Low thermal dissipation (0.5Ω sense resistor)
Drives 8 independent two-pairs power ports or
64-pairs ports
Can cascade up to 8 PoE devices (64 ports)
EEPROM interface for software patching and
parameter configuration
I2C Host interface
Supports Interrupt out pin
Dynamic power management
Emergency power management supporting three
configurable Power Bank I/Os
Direct register communication
Direct LED drive supporting one or two colors
Continuous monitoring per port and system data
Parameter setting per port and per system
Power soft start algorithm
Thermal monitoring/protection
Voltage monitoring/protection
H/W disable ports input
Built in 3.3 V regulator
Internal power on reset
Enhanced SPI bus for internal communication
External EEPROM for system parameters update
SW ROM patch option
RoHS compliant
Reset_n
47
Ref_port_neg
rGood2/GPIO4
49
14
13
Vmain
PD69008
48
CP_IN
♦
♦
♦
♦
Vport_pos0
CP_OUT
PD69008 Auto Mode features:
Enhanced Modes Additional Features:
63
gate_1
gate_0
65
port_sense1
66
Port_neg2
Port_neg1
67
73
69
68
port_sense3
74
70
Port_neg3
75
gate_3
Port_neg4
76
port_sense2
port_sense4
77
gate_2
gate_4
78
71
gate_5
79
72
Port_neg5
port_sense5
80
Pin Configuration _____________
Supported Features __________
PD69008
Temperature
range
-40 to 85°C
Package
LQFP 80 pin
This datasheet refers to ICs with date code "XAA0843" or later.
Date code: See the bottom line (XAA0843) in the Pin Configuration drawing. Where
“0843" is the date code, “08”IS the year (2008), and “43” is the week.
Microsemi
Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
Package Information___________
The PD69008 is packed in an 80-pin LQFP plastic
package, 12 x 12 x 1.4 mm with exposed pad
Figure 1: PD69008 Package Description
Copyright © 2009
Rev. 1.0, 2009-03-15
Microsemi
Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
Maximum Ratings ____________
Vmain………………………………………………… -0.3 to 80 V(1)
DGND, AGND, QGND, SENSE_NEG…………..-0.3 to 0.3 V(2)
VPORT_POSx ………………………………..……
-0.3 to 80 V(1)
VPORT_NEGx, REF_PORT_NEG……..………..… -8.4 to 80V(1)
VPORT_POSx - VPORT_NEGx……………..…..……
-0.3 to 80 V(1)
PORT_SENSEx …..……..……..……..………..…-7.2 to 25 V (1)
Gate_x………………………………..………
-0.3 to 18 V
VCC2p5, ADC2p5………….………………………... -0.3 to 3 V
VPERI……………………………..…………………. 4 V
EXT_REG……………………………………..…… -0.3 to 6 V
I2CINI, ASICINI…………………………………… -0.3 to 3 V
MISO, MOSI, SCK, SCL, SDA, CLK, RESETN, CS_N, INTERRUPT, POWER_BANK[2..0], LSD, LSC, LSL,
SDA_OUT….…………………………………... -0.3 to (VPERI + 0.3) V
.
ESD (Human Body Model)…………….….… -2 to 2 kV(3)
Max junction temperature (Tjunc)…………..…+150 °C
Junction-ambient thermal resistance (θJA)….. 30° C/W(4)
Junction-case thermal resistance (θJC)………10° C/W
Lead temperature (soldering, 10 s)…………. 260° C
Storage temperature…………………………..-40° to +125° C
Notes: “x” defines port numbers, 0 thru 3, inclusive.
(1)
80 V is the transient voltage that can be applied for 1 min max.
(2)
Maximum value between grounds.
(3)
ESD testing is performed in accordance with the Human Body Model (CZap = 100 pF, RZap = 1500 Ω).
(4)
with 4ML PCB – no air flow
Stresses beyond those listed above, may cause permanent damage to the device. Exposure to absolute maximum rating conditions for
extended periods, may affect device reliability.
Operating Conditions ____________________________________________
PARAMETER
MIN.
NOM.
Operating temperature
-40
At full load ambient
Operational limitations (1)
15 to 44
44 to 55
(1) Operating functions depend on the input voltage, as shown in Figure 2.
MAX.
UNIT
+85
°C
55 to 57
V
Figure 2: Operational Ranges
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
Electrical Characteristics ______________________________________
PIN NAME:
PAD TYPE:
PARAMETER
• SCL
• DISABLE_PORTS_N
Schmitt Trigger CMOS input, TTL Level with no internal Res.
SYMBOL
MIN
High Level Input Voltage
VIH
2.0
Low Level Input Voltage
VIL
TYP
MAX
0.3
V
V
Input High Current
IIH
-1
1
μA
Input Low Current
IIL
-1
1
μA
PIN NAME:
PAD TYPE:
•
•
•
•
•
CMOS
NOTE
V
0.8
Input Voltage Hysteresis
UNIT
LSD Multiplexed with GPIO_2
LSC Multiplexed with GPIO_3
POWER_GOOD0 Multiplexed with GPIO_0
POWER_GOOD1 Multiplexed with GPIO_1
POWER_GOOD2 Multiplexed with GPIO_4
I/O, TTL Level with no internal pull up / pull down resistor, with
Schmitt trigger Input
PARAMETER
SYMBOL
MIN
High Level Input Voltage
VIH
2.0
Low Level Input Voltage
VIL
Input Voltage Hysteresis
TYP
MAX
UNIT
V
0.8
0.3
V
V
Input High Current
IIH
-1
+1
μA
Input Low Current
IIL
-1
+1
μA
High Level Output Voltage
NOTE
VPERI-
V
Iout=-2 mA
V
Iout=2 mA
0.4V
Low Level Output Voltage
0.4
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME:
PAD TYPE:
•
•
•
CMOS
SCK
CS_N
MOSI
I/O, TTL Level with internal pull up current source, with Schmitt
trigger Input
PARAMETER
SYMBOL
MIN
High Level Input Voltage
VIH
2.0
Low Level Input Voltage
VIL
TYP
MAX
0.3
V
V
Input High Current
IIH
-1
+1
μA
Input Low Current
IIL
-1
+1
μA
High Level Output
VPERI-
Voltage
NOTE
V
0.8
Input Voltage Hysteresis
UNIT
V
Iout = -2 mA
0.4
V
Iout = 2 mA
50
uA
0.4 V
Low Level Output
Voltage
Pull up current
PIN NAME:
PAD TYPE:
PARAMETER
10
•
20
MISO
CMOS I/O, TTL Level with internal pull up current source, with Schmitt
trigger Input
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
High Level Input Voltage
VIH
Low Level Input Voltage
VIL
Input Voltage Hysteresis
2.0
V
0.8
0.3
V
V
Input High Current
IIH
-1
+1
μA
Input Low Current
IIL
-1
+1
μA
High Level Output
Voltage
VPERI-
V
Iout = -2 mA
0.4
V
Iout = 2 mA
50
uA
0.4V
Low Level Output
Voltage
Pull down current
10
20
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME:
PAD TYPE:
PARAMETER
High Level Input
• RESET_N
•
SDA
• SDA_OUT Multiplexed with TEST_MODE
Digital I/O – input/output open drain
CMOS Open Drain Output with Schmitt Trigger Input, TTL Level (external
pull up res. Only))
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
VIH
2.0
V
Voltage
Low Level Output
VOL
0.4
V
VIL
0.8
V
Iout = 6 mA
Voltage
Low Level Input
Voltage
Input Voltage
0.3
V
Hysteresis
OFF State Output
-1
+1
uA
Current
PIN NAME:
PAD TYPE:
PARAMETER
•
CS_EEPROM & LSL Multiplexed with INTERRUPT_N
CMOS Open Drain Output (external pull up res. Only))
SYMBOL
MIN
TYP
Low Level Output
MAX
UNIT
0.4
V
+1
uA
MAX
UNIT
+10
uA
NOTE
Iout = 6 mA
Voltage
OFF State Output
-1
Current
PIN NAME:
PAD TYPE:
PARAMETER
Pin Current Consumption
• VPORT_NEGx
• REF_PORT_NEG
High Voltage Analog Pad
SYMBOL
MIN
-10
TYP
NOTE
Port driver OFF, Vport
differential measurement
OFF, AC generator OFF
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME:
PAD TYPE:
PARAMETER
•
PORT_SENSEx
Low Voltage Analog Pad
SYMBOL
Operating Voltage
MIN
TYP
0
MAX
UNIT
0.5
V
NOTE
With external 0.5 Ohms 2%
to GND
Internal Current
20
uA
MAX
UNIT
62
V
MAX
UNIT
57
V
13.6
16
mA
TYP
MAX
UNIT
68
V
5
mA
Consumption
PIN NAME:
PAD TYPE:
PARAMETER
• VPORT_POSx
• VPORT_NEGx
High Voltage Analog Pad
SYMBOL
Operating Voltage (to
MIN
TYP
0
NOTE
GND)
PIN NAME:
PAD TYPE:
PARAMETER
•
VMAIN
High Voltage Supply Pad
SYMBOL
Operating Voltage
MIN
TYP
44
VMAIN Current
NOTE
Total on VMAIN
Consumption
PIN NAME:
PAD TYPE:
PARAMETER
Operating voltage
Pin Internal Current
•
CP_OUT
Analog
SYMBOL
MIN
44
NOTE
Consumption
Copyright © 2009
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Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME:
PAD TYPE:
PARAMETER
•
CP_IN
Analog
SYMBOL
Operating Voltage
PIN NAME:
PAD TYPE:
PARAMETER
MIN
TYP
34
•
MAX
UNIT
57
V
NOTE
ADC2p5, VCC2p5, VPERI, EXT_REG
Analog
SYMBOL
ADC2p5 Output Voltage
MIN
TYP
2.45
ADC2p5 Internal Current
MAX
UNIT
2.55
V
6
mA
Consumption
NOTE
Recommended external cap.
= 47 nF to 135 nF
VCC2p5 Output Voltage
2.37
2.62
V
Recommended external cap.
= 47 nF to 135 nF
VPERI Output Voltage
3.10
3.5
V
Recommended external cap.
= 1 uF to 4.7 uF
VPERI External Current
6
mA
6
mA
Without external NPN
Load
EXT_REG Output
Current
PIN NAME:
PAD TYPE:
PARAMETER
• ASICINI, I2CINI
(max. capacitance between mode input to GND should NOT exceed 1nF)
Analog
SYMBOL
MIN
TYP
MAX
UNIT
Operating Voltage
0
ADC2p5
V
Current Consumption
-1
+1
uA
MAX
UNIT
1.34
V
PIN NAME:
PAD TYPE:
PARAMETER
Output Voltage
•
NOTE
IREF
Analog
SYMBOL
MIN
1.21
TYP
NOTE
With external 24.9 K resistor
to GND
Copyright © 2009
Microsemi
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Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
•
PIN NAME:
PAD TYPE:
PARAMETER
FET_Gx
Analog
SYMBOL
Output voltage
MIN
TYP
MAX
UNIT
15
V
12
NOTE
Dynamic Characteristics
The PD69008 utilizes three programmable current level thresholds (Imin, Icut, Ilim) and three timers (Tmin, Tcut, Tlim).
Loads that dissipate more than Icut for longer than Tcut are classified as ‘overloads’ and are automatically shutdown.
Loads that consume Ilim current for more than Tlim are shutdown and classified as 'short circuit state'.
In cases where the PD69008 is configured to operate in DC-Disconnect mode, and the output current is below Imin
for more than Tmin , the PD is classified as ‘no-load’ and is shutdown. In cases where the PD69008 is configured to
operate in AC-Disconnect mode, and the load's impedance is above a pre-defined impedance for more than Tmin,
the PD is classified as ‘no-load’ and is shutdown.
Automatic recovery from overload and no-load conditions is attempted every period of TOVLREC and TUDLREC (typically
5 and 1 seconds, respectively). Output power is limited to Ilim, which is a maximum peak current allowed at the port.
AF Ports Parameters
PARAMETER
Automatic recovery from
overload shutdown
Automatic recovery from no-load
shutdown
Cutoff timers accuracy
Inrush current
Output current operating range
Output power available,
operating range
Off mode current
PD power maintenance request
drop-out time limit
Over load current detection range
Over load time limit
Turn on rise time
CONDITIONS
TOVLREC value, measured from port shutdown
(can be modified through control port)
TUDLREC value, measured from port shutdown
(can be modified through control port)
Typical accuracy of Tcut
IInrsh
Iport
Pport
Imin1
Imin2
TPMDO
Icut
TOVL
Trise
For t=50 ms, Cload=180 uF max.
Continuous operation after startup period.
Continuous operation after startup period,
at port output.
Must disconnect for t greater than TUVL
May or may not disconnect for t greater
than TUVL
Buffer period to handle transitions
Time limited to TOVL
From 10% to 90% of Vport
(Specified for PD load consisting of 100 uF capacitor
in parallel to 200 Ω).
Turn off time
Time Maintain Power Signature
AC disconnect impedance
Toff
TMPS
Zac
MIN.
4
TYP.
MAX.
UNIT
5
s
1
s
2
400
10
0.57
0
ms
450
375
mA
mA
15.4
W
5
mA
10
mA
300
400
ms
350
50
400
75
mA
ms
0
5
7.5
15
From Vport to 2.8 Vdc
DC modulation time for dc disconnect
us
500
27
49
600
2000
Copyright © 2009
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Analog Mixed Signal Group
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ms
ms
KΩ
PD69008 - 8 Ports Power Over Ethernet Manager
AT Ports Parameters
PARAMETER
Automatic recovery from
overload shutdown
Automatic recovery from no-load
shutdown
Cutoff timers accuracy
Inrush current
Output current operating range
Output power available,
operating range
Off mode current
PD power maintenance request
drop-out time limit
Over load current detection range
Over load time limit
Turn on rise time
CONDITIONS
TOVLREC value, measured from port shutdown
(can be modified through control port)
TUDLREC value, measured from port shutdown
(can be modified through control port)
Typical accuracy of Tcut
IInrsh
Iport
Pport
Imin1
Imin2
TPMDO
Icut
TOVL
Trise
For t=50 ms, Cload=180 uF max.
Continuous operation after startup period.
Continuous operation after startup period,
at port output.
Must disconnect for t greater than TUVL
May or may not disconnect for t greater
than TUVL
Buffer period to handle transitions
Time limited to TOVL
From 10% to 90% of Vport
(Specified for PD load consisting of 100 uF capacitor
in parallel to 200 Ω).
Turn off time
Time Maintain Power Signature
AC disconnect impedance
Toff
TMPS
Zac
MIN.
4
TYP.
MAX.
UNIT
5
s
1
s
2
0
ms
400
10
450
643
mA
mA
0.57
36.25
W
5
mA
10
mA
400
ms
771
75
mA
ms
0
5
7.5
300
686
50
728
15
From Vport to 2.8 Vdc
DC modulation time for dc disconnect
us
500
27
49
600
2000
Copyright © 2009
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Analog Mixed Signal Group
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ms
ms
KΩ
PD69008 - 8 Ports Power Over Ethernet Manager
Pin Description
________________________________________________________________________________
Pin
Pin Name
[Package]
Pin Type
Description
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
PAD
VPORT_POS0
VPORT_POS1
VPORT_POS2
VPORT_POS3
VPORT_POS4
VPORT_POS5
VPORT_POS6
VPORT_POS7
NC
NC
NC
NC
CP_OUT
CP_IN
VMAIN
REF_PORT_NEG
DGND2
POWER_GOOD0 MULTIPLEXED
WITH GPIO_0
POWER_GOOD1 MULTIPLEXED
WITH GPIO_1
POWER_GOOD2 MULTIPLEXED
WITH GPIO_4
AGND1
Gnd
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Exposed pad connected to underside of die
Port 0 positive input
Port 1 positive input
Port 2 positive input
Port 3 positive input
Port 4 positive input
Port 5 positive input
Port 6 positive input
Port 7 positive input
Not Connected
Not Connected
Not Connected
Not Connected
Charge Pump Output Pulse
Charge pump input
Main Voltage supply
Port negative reference
Digital ground
Power supply monitoring Multiplexed with General
purpose I/O
Power supply monitoring Multiplexed with General
purpose I/O
Power supply monitoring Multiplexed with General
purpose I/O
Analog ground
22
VPORT_NEG6
Analog I/O
Port 6 negative voltage feeding
23
PORT_SENSE6
Analog I/O
Channel current monitoring
24
FET_G6
Analog I/O
Port 6 – Gate control
25
FET_G7
Analog I/O
Port 7 – Gate control
26
PORT_SENSE7
Analog I/O
Channel current monitoring
27
VPORT_NEG7
Analog I/O
Port 7 negative voltage feeding
28
29
30
31
32
33
34
35
36
37
38
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
39
NC
Not Connected
19
20
21
Analog I/O
Supply
Supply
Analog I/O
GND
Digital I/O
Digital I/O
Digital I/O
GND
40
DGND1
GND
41
42
43
DISABLE_PORTS_N
CS_N
MISO
Digital Input
Digital I/O
Digital I/O
Digital ground
Disable All Ports Power – Active Low
SPI bus, Chip Select
SPI bus, Master Data in/slave out
Copyright © 2009
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Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
Pin
Pin Name
[Package]
Pin Type
Description
44
45
46
47
MOSI
SCK
SCL
SDA_OUT MULTIPLEXED WITH
TEST_MODE
Digital I/O
Digital I/O
Digital Input
Digital I/O
48
49
50
51
52
SDA
RESET_N
IREF
ASICINI
VCC2P5
Digital I/O
Digital I/O
Analog I/O
Analog Input
Internal Regulator
53
54
55
I2CINI
QGND
ADC2P5
Analog Input
GND
Internal reference
SPI bus, Master Data out/slave in
SPI bus, Serial clock I/O
I2C bus, Serial Clock Input
Third pin in I2C protocol
Test Mode Pin – Must be tied to VPERI with pull-up
resistor if not used
I2C bus, open drain
Active Low Reset I/O
Current reference
Analog input for Asic initialization
Internal 2.5v source – not to be used for external
devices
Analog input for I2C initialization
Quiet analog ground
ADC reference – not to be used for external
devices
56
57
EXT_REG
VPERI
Analog Out
Analog Out
58
59
CS_EEPROM_N & LSL
MULTIPLEXED WITH INTERRUPT_N
LSD MULTIPLEXED WITH GPIO_2
Digital Output Open
drain
Digital I/O
60
LSC MUXED WITH GPIO_3
Digital I/O
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
SENSE_NEG
AGND2
VPORT_NEG0
PORT_SENSE0
FET_G0
FET_G1
PORT_SENSE1
VPORT_NEG1
VPORT_NEG2
PORT_SENSE2
FET_G2
FET_G3
PORT_SENSE3
VPORT_NEG3
VPORT_NEG4
PORT_SENSE4
FET_G4
FET_G5
PORT_SENSE5
VPORT_NEG5
Analog I/O
GND
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
External regulation
Regulated 3.3v output voltage source for external
devices
SPI bus, EEPROM Chip Select & LED Stream
Latch (if set) Multiplexed with interrupt out
LED Stream Data – data out Multiplexed with
General purpose I/O
LED Stream CLK– CLK out Multiplexed with
General purpose I/O
Port sense reference
Analog ground
Port 0 negative voltage feeding
Channel current monitoring
Port 0 – Gate control
Port 1 – Gate control
Channel current monitoring
Port 1 negative voltage feeding
Port 2 negative voltage feeding
Channel current monitoring
Port 2 – Gate control
Port 3 – Gate control
Channel current monitoring
Port 3 negative voltage feeding
Port 4 negative voltage feeding
Channel current monitoring
Port 4 – Gate control
Port 5 – Gate control
Channel current monitoring
Port 5 negative voltage feeding
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
Page 12
2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
Configuration Pins _________________________________________
There are two main configuration pins utilized in the PD69008 (as shown in Figure 3) which configure the operation
mode of the chip and the communication addresses (SPI and I2C).
VMain
VPeri 3.3v
R2
R1
Vmain
AD C2P5
Vperi
Ex _Reg
ASIC_INI
P D69008
10k
10k
I2C _IN I
QGN D
Figure 3: Electronic Connection of Configuration Pins
Application information _______________________________________
The PD69008 can be integrated into a number of applications such as daughter boards, Ethernet switches or
routers. Examples of such applications are described below:
Integrated directly into a switch: Facilitates entire PoE concept by including the IC(s) on the main switch’s PCB.
Daughter board add-on: The IC is integrated into a small dedicated PoE PCB, mounted on top of the switch’s main
PCB or into a DIMM module.
Integrated into an RJ45 connector: Saves space on the main board and creates small differences between the PoE
and non-PoE versions of a switch.
Midspans: Stand-alone devices, installed between the Ethernet switch and the PDs (Powered Devices) such as
telephones, cameras, wireless LANs, etc.
These Midspans include the PD69008 IC as a PoE control element, destined to inject power over the
communication lines.
Figure 4 and Figure 5 provide examples of basic applications of the PD69008 in an AC Disconnect Mode and the
DC Disconnect Mode:
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
Page 13
2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
Vmain
Vperi
22.6k
46.4k
24.9k
10K
Figure 4: Basic Application with AC Disconnect Support
Vmain
Vperi
22.6k
46.4k
24.9k
10K
Figure 5: Basic Application with DC Disconnect Support
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
Page 14
2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
The information contained in the document is PROPRIETARY AND CONFIDENTIAL information of Microsemi and
cannot be copied, published, uploaded, posted, transmitted, distributed or disclosed or used without the express
duly signed written consent of Microsemi If the recipient of this document has entered into a disclosure agreement
with Microsemi, then the terms of such Agreement will also apply . This document and the information contained
herein may not be modified, by any person other than authorized personnel of Microsemi. No license under any
patent, copyright, trade secret or other intellectual property right is granted to or conferred upon you by disclosure
or delivery of the information, either expressly, by implication, inducement, estoppels or otherwise. Any license
under such intellectual property rights must be approved by Microsemi in writing signed by an officer of Microsemi.
Microsemi reserves the right to change the configuration, functionality and performance of its products at anytime
without any notice. This product has been subject to limited testing and should not be used in conjunction with lifesupport or other mission-critical equipment or applications. Microsemi assumes no liability whatsoever, and
Microsemi disclaims any express or implied warranty, relating to sale and/or use of Microsemi products including
liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent,
copyright or other intellectual property right. The product is subject to other terms and conditions which can be
located on the web at http://www.microsemi.com/legal/tnc.asp
Revision History
Revision Level / Date
Para. Affected
Description
0.1 / 15 March 2009
-
Initial Preliminary Release
1.0 / 25-Aug-09
Release
© 2009 Microsemi Corp.
All rights reserved.
For technical support contact:[email protected]
Cat. No. 06-0079-058
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
Page 15
2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308