KSZ9031RNX Brief

KSZ9031RNX
Gigabit Ethernet Transceiver
with RGMII Support
Micrel Inc., is a leading global manufacturer
Description
The KSZ9031RNX is a completely integrated triple-speed
(10Base-T/100Base-TX/1000Base-T) Ethernet physicallayer transceiver for transmission and reception of data on
standard CAT-5 unshielded twisted pair (UTP) cable.
Applications
The KSZ9031RNX provides the Reduced Gigabit Media
Independent Interface (RGMII) for direct connection to
RGMII MACs in Gigabit Ethernet processors and switches
for data transfer at 10/100/1000Mbps.
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The KSZ9031RNX reduces board cost and simplifies
board layout by using on-chip termination resistors for the
four differential pairs and by integrating an LDO controller
to drive a low-cost MOSFET to supply the 1.2V core.
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The KSZ9031RNX offers diagnostic features to facilitate
system bring-up and debugging in production testing and
in product deployment. Parametric NAND tree support
enables fault detection between KSZ9031 I/Os and the
board. The LinkMD® TDR-based cable diagnostic identifies
faulty copper cabling. Remote and local loopback functions
verify analog and digital data paths.
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GPON residential gateway
SOHO media center
Voice-over-Internet Protocol (VoIP) gateway
Network attached storage
Laser printers and projectors
Wired/wireless Gigabit SOHO/SMB router
media converter
VPN/firewall-based SMB/SME router
Gigabit Ethernet LAN on motherboard
Integrated broadband CPE (ADSL/VDSL/
FTTH) router
IPTV and IP set top boxes
For more information, contact your local Micrel
sales representative, or visit Micrel at:
www.micrel.com
The KSZ9031RNX is available in a 48-pin, lead-free QFN
package.
of IC solutions for the worldwide analog,
Ethernet and high bandwidth markets.
The
Company’s
advanced
products
mixed-signal,
communication, clock management, Ethernet
switch and physical layer transceiver
ICs. Company customers include leading
manufacturers of enterprise, consumer,
industrial,
automotive,
mobile,
and
telecommunications,
computer
the-art wafer fabrication facilities are located
in San Jose, CA with regional sales and
support offices and advanced technology
design centers situated throughout the
Americas, Europe and Asia. In addition, the
www.micrel.com
PMA
TX10/100/1000
CONFIGURATIONS
PMA
RX1000
PCS1000
PMA
RX100
PCS100
PMA
RX10
RGMII
INTERFACE
PCS10
AUTONEGOTIATION
products.
Corporation headquarters and state-of-
Company maintains an extensive network of
Block Diagram
MEDIA
INTERFACE
and
power semiconductors; high performance
distributors and reps worldwide.
CLOCK
RESET
include
analog
LED
DRIVERS
KSZ9031RNX - Gigabit Ethernet Transceiver with RGMII Support
Key Features
Benefits
Energy Efficient Ethernet (EEE) support with low-power idle (LPI) mode
and clock stoppage for 100Base TX/ 1000Base-T and transmit amplitude
reduction with 10Base-Te option
EEE saves power by keeping the voltage on the Ethernet cable at
approximately 0V during periods of no traffic. The traffic can resume without
any packet loss within 30µs at 100BT and 16µs at 1000BT.
Energy detect power-down mode for reduced power consumption when the
cable is not attached
EDPD mode is used to reduce the transceiver power consumption when
the cable is unplugged.
Wake-on-LAN (WOL) support with robust custom-packet detection
WOL mechanism allows many devices in a system to be in sleep until
a magic packet from the system awakens them, thus keeping the total
systems power level at a reduced level.
Automatic MDI/MDI-X crossover to detect and correct pair swap at all
speeds of operation
Auto-MDI/MDIX eliminates the need for cross-over cable, thus reduces
installation costs. Easy to use.
On-chip termination resistors for the differential pairs
On-chip termination (eliminating eight external resistors) not only simplifies
PCB design and reduces system BOM, but also improves overall signal
integrity and EMI emission.
On-chip LDO controller to support single 3.3V supply operation – requires
only one external FET to generate 1.2V for the core
Integration of a LDO controller permits a low cost MOSFET to supply the
1.2V core, which reduces board cost and simplifies board layout.
LinkMD TDR-based cable diagnostic to identify faulty copper cabling
Built-in LinkMD diagnostics helps identification of common cabling
problems, including those not addressed by IEEE. It simplifies network
deployment and reduces network downtime.
125MHz reference clock output
125MHz clock output to the MAC eliminates external 125MHz oscillator and
lowers the BOM cost.
MDC/MDIO
MANAGEMENT
KSZ9031RNX
MAGNETICS
RGMII
10/100/1000Mbps
RGMII
ETHERNET MAC
ON-CHIP TERMINATION
RESISTORS
Functional Diagram
RJ-45
CONNECTOR
MEDIA TYPES
10Base-T
100Base-TX
1000Base-T
LDO
CONTROLLER
VIN
3.3VA
VOUT
1.2V (FOR CORE VOLTAGES)
Contact Micrel, Inc.
Location
Address
Telephone
Fax
Corporate HQ
2180 Fortune Drive
San Jose, CA 95131 USA
+1 408 944 0800
+1 408 944 0970
Western USA
2180 Fortune Drive
San Jose, CA 95131 USA
+1 408 944 0800
+1 408 944 0970
Central USA
2425 N. Central Express Way, Suite 351
Richardson, TX 75080 USA
+1 972 393 2533
+1 972 393 2370
Eastern USA
93 Branch Street
Medford, NJ 08055 USA
+1 609 654 0078
+1 609 654 0989
Richardson, TX 75080 USA
Latin America
2425 N. Central Express Way, Suite 351
Hong Kong
Unit 213-215, Photonics Centre, #2 Science Park East Ave., Hong Kong Science Park Shatin, N.T., Hong Kong
+1 972 393 2533
+1 972 393 2370
+852 2886 8839
+852 2886 8851
China
Rm 601, Bldg B, Int’l Chamber of Commerce Mansion, Fuhua Rd 1 Futian Dist
Shenzhen, P.R. China 518048
+86 755 8302 7618
+86 755 8302 7637
Japan
Queens Tower 14F, 2-3-1, Minatomirai, Nishi-ku, Yokohama-shi
Kanagawa 220-6014, Japan
+81 45 224 6616
+81 45 224 6716
Korea
4F Manzo 2 Building, 198-47, Gungnae-dong, Bundang-ku, Seongnam-City
Kyungki-do, 463-470, Korea
+82 2 538 2380
+82 2 538 2381
Singapore/India
7500A Beach Road, #07-324 The Plaza
Singapore 199591
+65 6291 1318
+65 6291 1332
Taiwan
4F, No. 43 Lane 188, Rueiguang Road, Nei-Hu District
Taipei 11491 Taiwan, R.O.C
+886 2 8751 0600
+886 2 8751 0746
UK/EMEA
1st Floor, 3 Lockside Place, Mill Lane, Newbury, Berks
United Kingdom RG14 5QS
+44 1635 524455
+44 1635 524466
France/Southern Europe
Les Laurentides - Batiment Ontario, 3 Avenue du Quebec 91140 Villebon sur Yvette, France
+33 0 1 6092 4190
+33 0 1 6092 4189
1.800.944.0800 Tel
1.408.474.1000 Fax
www.micrel.com
© 2012 Micrel, Inc. All rights reserved. Micrel and LinkMD are registered trademarks of Micrel, Inc.
12/04/2012