ETHERNET TRANSCEIVER. RTL8251C-GR Datasheet

RTL8251C-GR TRANSCEIVER. Datasheet pdf. Equivalent

RTL8251C-GR Datasheet
Recommendation RTL8251C-GR Datasheet
Part RTL8251C-GR
Description INTEGRATED 10/100/1000 GIGABIT ETHERNET TRANSCEIVER
Feature RTL8251C-GR; RTL8251C-GR RTL8251CL-GR INTEGRATED 10/100/1000 GIGABIT ETHERNET TRANSCEIVER DATASHEET (CONFIDENTIAL.
Manufacture Realtek
Datasheet
Download RTL8251C-GR Datasheet




Realtek RTL8251C-GR
RTL8251C-GR
RTL8251CL-GR
INTEGRATED 10/100/1000 GIGABIT
ETHERNET TRANSCEIVER
DATASHEET
(CONFIDENTIAL: Development Partners Only)
Rev. 1.2
05 August 2010
Track ID: JATR-2265-11
Realtek Semiconductor Corp.
No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
Tel.: +886-3-578-0211 Fax: +886-3-577-6047
www.realtek.com



Realtek RTL8251C-GR
RTL8251C & RTL8251CL
Datasheet
COPYRIGHT
©2010 Realtek Semiconductor Corp. All rights reserved. No part of this document may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means without the written permission of Realtek Semiconductor Corp.
DISCLAIMER
Realtek provides this document “as is”, without warranty of any kind. Realtek may make improvements
and/or changes in this document or in the product described in this document at any time. This document
could include technical inaccuracies or typographical errors.
TRADEMARKS
Realtek is a trademark of Realtek Semiconductor Corporation. Other names mentioned in this document are
trademarks/registered trademarks of their respective owners.
USING THIS DOCUMENT
This document is intended for the software engineer’s reference and provides detailed programming
information.
Though every effort has been made to ensure that this document is current and accurate, more information
may have become available subsequent to the production of this guide.
REVISION HISTORY
Revision
Release Date
1.0 2008/09/10
1.1 2009/08/11
1.2 2010/08/05
Summary
First release.
Revised section 8 Switching Regulator, page 34.
Revised section 8.1 PCB Layout, page 34.
Revised section 10.5.2 RGMII Timing Modes, page 45.
Removed CLK125 feature.
Integrated 10/100/1000 Gigabit Ethernet Transceiver ii
Track ID: JATR-2265-11 Rev. 1.2



Realtek RTL8251C-GR
RTL8251C & RTL8251CL
Datasheet
Table of Contents
1. GENERAL DESCRIPTION..............................................................................................................................................1
2. FEATURES.........................................................................................................................................................................2
3. SYSTEM APPLICATIONS...............................................................................................................................................2
4. PIN ASSIGNMENTS .........................................................................................................................................................3
4.1. RTL8251C PIN ASSIGNMENTS (64-PIN QFN) .............................................................................................................3
4.2. PACKAGE IDENTIFICATION...........................................................................................................................................3
4.3. RTL8251CL PIN ASSIGNMENTS (48-PIN LQFP) .........................................................................................................4
4.4. PACKAGE IDENTIFICATION...........................................................................................................................................4
5. PIN DESCRIPTIONS ........................................................................................................................................................5
5.1.
5.2.
5.3.
5.4.
5.5.
5.6.
5.7.
5.8.
5.9.
5.10.
TRANSCEIVER INTERFACE............................................................................................................................................5
CLOCK .........................................................................................................................................................................5
RGMII .........................................................................................................................................................................6
MANAGEMENT INTERFACE...........................................................................................................................................6
RESET ..........................................................................................................................................................................6
MODE SELECTION ........................................................................................................................................................7
LED INDICATION .........................................................................................................................................................7
REGULATOR AND REFERENCE......................................................................................................................................7
POWER AND GROUND ..................................................................................................................................................8
NOT CONNECTED .........................................................................................................................................................8
6. FUNCTION DESCRIPTION ............................................................................................................................................9
6.1. TRANSMITTER ..............................................................................................................................................................9
6.1.1. RGMII (1000Mbps) Mode ......................................................................................................................................9
6.1.2. RGMII (100Mbps) Mode ........................................................................................................................................9
6.1.3. RGMII (10Mbps) Mode ..........................................................................................................................................9
6.2. RECEIVER.....................................................................................................................................................................9
6.2.1. RGMII (1000Mbps) Mode ......................................................................................................................................9
6.2.2. RGMII (100Mbps) Mode ......................................................................................................................................10
6.2.3. RGMII (10Mbps) Mode ........................................................................................................................................10
6.3. HARDWARE CONFIGURATION ....................................................................................................................................10
6.4. LED AND PHY ADDRESS CONFIGURATION ...............................................................................................................11
6.5. MAC/PHY INTERFACE ..............................................................................................................................................12
6.5.1. RGMII...................................................................................................................................................................12
6.5.2. Management Interface..........................................................................................................................................12
6.6. AUTO-NEGOTIATION..................................................................................................................................................13
6.6.1. Auto-Negotiation Priority Resolution...................................................................................................................16
6.6.2. Auto-Negotiation Master/Slave Resolution ..........................................................................................................16
6.6.3. Auto-Negotiation PAUSE/ASYMMETRIC PAUSE Resolution ............................................................................17
6.7. CROSSOVER DETECTION AND AUTO-CORRECTION ....................................................................................................18
6.8. LED CONFIGURATION................................................................................................................................................19
6.8.1. RTL8251C LED Configuration ............................................................................................................................19
6.8.2. RTL8251CL LED Configuration ..........................................................................................................................19
6.9. POLARITY CORRECTION .............................................................................................................................................21
6.10. POWER .......................................................................................................................................................................21
Integrated 10/100/1000 Gigabit Ethernet Transceiver iii
Track ID: JATR-2265-11 Rev. 1.2







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