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RTL8208BF

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

Realtek Semiconductor 

RTL8208B-LF/RTL8208BF-LF

Datasheet

Table of Contents

1. GENERAL DESCRIPTION................................................................................................................................................1

2. FEATURES...........................................................................................................................................................................2

3. APPLICATIONS ..................................................................................................................................................................2

4. PIN ASSIGNMENTS ...........................................................................................................................................................3

4.1. PIN ASSIGNMENTS (RTL8208B-LF) ............................................................................................................................3

4.2. LEAD (PB)-FREE PACKAGE IDENTIFICATION ................................................................................................................3

4.3. PIN ASSIGNMENTS (RTL8208BF-LF) ..........................................................................................................................4

4.4. LEAD (PB)-FREE PACKAGE IDENTIFICATION ................................................................................................................4

5. PIN DESCRIPTIONS ..........................................................................................................................................................6

5.1. MEDIA CONNECTION PINS............................................................................................................................................6

5.2. POWER AND GROUND PINS ..........................................................................................................................................6

5.3. MISCELLANEOUS PINS .................................................................................................................................................7

5.4. RMII/SMII/SS-SMII PINS ...........................................................................................................................................7

5.5. SMI (SERIAL MANAGEMENT INTERFACE) ....................................................................................................................9

5.6. LED PINS.....................................................................................................................................................................9

5.7. MODE CONTROL PINS ................................................................................................................................................10

5.8. TEST PINS ..................................................................................................................................................................12

6. REGISTER DESCRIPTIONS ..........................................................................................................................................13

6.1.

6.2.

6.3.

6.4.

6.5.

6.6.

6.7.

6.8.

6.9.

6.10.

REGISTER0: CONTROL ...............................................................................................................................................14

REGISTER1: STATUS ...................................................................................................................................................16

REGISTER2: PHY IDENTIFIER 1 REGISTER .................................................................................................................18

REGISTER3: PHY IDENTIFIER 2 REGISTER .................................................................................................................18

REGISTER4: AUTO-NEGOTIATION ADVERTISEMENT ...................................................................................................19

REGISTER5: AUTO-NEGOTIATION LINK PARTNER ABILITY.........................................................................................21

REGISTER6: AUTO-NEGOTIATION EXPANSION............................................................................................................23

PORT 1 REGISTER24: CABLE TESTER CONTROL REGISTER0.......................................................................................24

PORT1 REGISTER29: CABLE TESTER CONTROL REGISTER1 .......................................................................................24

PORT1 REGISTER30: CABLE STATUS REGISTER..........................................................................................................25

7. FUNCTION DESCRIPTION ............................................................................................................................................26

7.1. GENERAL ...................................................................................................................................................................26

7.1.1. SMI (Serial Management Interface) .....................................................................................................................26

7.1.2. Port Pair-Loop Back Mode (PP-LPBK) (RTL8208BF-LF Only) .........................................................................26

7.1.3. PHY Address.........................................................................................................................................................27

7.1.4. Auto-Negotiation ..................................................................................................................................................27

7.1.5. Full-Duplex Flow Control ....................................................................................................................................27

7.2. INITIALIZATION AND SETUP........................................................................................................................................28

7.2.1. Reset .....................................................................................................................................................................28

7.2.2. Setup and Configuration.......................................................................................................................................28

7.3. 10BASE-T ..................................................................................................................................................................28

7.3.1. Transmit Function ................................................................................................................................................28

7.3.2. Receive Function ..................................................................................................................................................28

7.3.3. Link Monitor.........................................................................................................................................................28

7.3.4. Jabber...................................................................................................................................................................29

7.3.5. Loopback ..............................................................................................................................................................29

7.4. 100BASE-TX .............................................................................................................................................................29

7.4.1. Transmit Function ................................................................................................................................................29

7.4.2. Receive Function ..................................................................................................................................................30

7.4.3. Link Monitor.........................................................................................................................................................31

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

iii

Track ID: JATR-1076-21 Rev. 1.3

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