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RTL8208BF

SINGLE-CHIP OCTAL 10/100BASE-TX/FX PHY TRANSCEIVER

Realtek Semiconductor 

RTL8208B-LF/RTL8208BF-LF

Datasheet

COPYRIGHT

©2006 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, neither expressed nor implied,

including, but not limited to, the particular purpose. 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 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. In that event, please

contact your Realtek representative for additional information that may help in the development process.

REVISION HISTORY

Revision

Release Date

1.0

2003/12/16

1.1

2004/08/30

1.2

2004/08/31

1.3

2006/09/22

Summary

Draft release.

First approved release.

Change bias resistor value to 2K ohm in Figure 22 on page 49.

1. Add Fiber Application information for RTL8208BF-LF.

2. Modify Figure 1, page 3, and Figure 2, page 4.

3. Modify Table 1. Pin Assignments, on page 5.

4. Modify Table 5. RMII/SMII/SS-SMII Pins, page 7.

5. Corrected SMI Clock frequency from 25MHz to 2.5MHz (Table 6,

page 9, section 7.1.1, page 26, and Table 40, page 52).

6. Recommend LEDMODE Pin be pulled high or pulled low (see Table 8,

page 10).

7. Add LED rise and fall timing (Figure 16, page 42).

8. Change 2SB1188 to 2SB1182 (Figure 20 and Table 35, page 47).

9. Modify Table 36. Absolute Maximum Ratings, and Table 37. Operating

Range, on page 50.

10. Add power startup internal sequence (section 9.6 Power Start Up &

Internal Reset Sequence, page 56).

11. Modify section 10 Mechanical Dimensions, page 58.

12. Modify section 11 Ordering Information, page 59.

Single-Chip Octal 10/100-TX/FX PHY Transceiver

ii

Track ID: JATR-1076-21 Rev. 1.3

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