RTL8208 datasheet(1/40 Pages) ETC | REALTEK SINGLE CHIP OCTAL 10/100 MBPS FAST ETHERNET TRANSCEIVER

Part #	RTL8208

Description	REALTEK SINGLE CHIP OCTAL 10/100 MBPS FAST ETHERNET TRANSCEIVER

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RTL8208

2001/01/07

1

Rev.1.923

REALTEK SINGLE CHIP

OCTAL 10/100 MBPS

FAST ETHERNET TRANSCEIVER

RTL8208

1. Features........................................................................ 2

2. General Description .................................................... 2

3. Block Diagram............................................................. 3

4. Pin Assignments .......................................................... 4

5. Pin Description ............................................................ 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 ...................................... 8

5.5 SMI (Serial Management Interface) Pins ............... 9

5.6 LED Pins ................................................................ 9

5.7 Mode Control Pins ............................................... 10

5.8 Reserved Pins ....................................................... 11

6. Register Descriptions ................................................ 12

6.1 Register 0: Control ............................................... 12

6.2 Register1: Status................................................... 14

6.3 Register2: PHY Identifier 1 Register ................... 15

6.4 Register3: PHY Identifier 2 Register ................... 15

6.5 Register4: Auto-Negotiation Advertisement........ 16

6.6 Register5: Auto-Negotiation Link Partner Ability......... 17

6.7 Register6: Auto-Negotiation Expansion............... 18

7. Functional Description ............................................. 19

7.1 General ................................................................. 19

7.1.1 SMI (Serial Management Interface) ............. 19

7.1.2 Port Pair Loop Back Mode (PP-LPBK)........ 19

7.1.3 PHY Address ................................................ 20

7.1.4 Auto-Negotiation .......................................... 20

7.1.5 Full-Duplex Flow Control ............................ 20

7.2 Initialization and Setup......................................... 20

7.2.1 Reset ............................................................. 20

7.2.2 Setup and configuration................................ 20

7.3 10Base-T .............................................................. 20

7.3.1 Transmit Function......................................... 20

7.3.2 Receive Function .......................................... 21

7.3.3 Link Monitor................................................. 21

7.3.4 Jabber............................................................ 21

7.3.5 Loopback ...................................................... 21

7.4 100Base-TX ......................................................... 21

7.4.1 Transmit Function......................................... 21

7.4.2 Receive Function .......................................... 21

7.4.3 Link Monitor ................................................ 22

7.4.4 Baseline Wander Compensation ................... 23

7.5 100Base-FX ......................................................... 23

7.5.1 Transmit Function......................................... 23

7.5.2 Receive Function .......................................... 23

7.5.3 Link Monitor ................................................ 24

7.5.4 Far-End-Fault-Indication (FEFI) .................. 24

7.6 RMII/SMII/SS-SMII............................................ 24

7.6.1 RMII (Reduced MII) .................................... 25

7.6.2 SMII (Serial MII) ......................................... 25

7.5.3 SS-SMII (Source Synchronous -Serial MII)....... 27

7.7 Power Saving and Power Down Mode ................ 28

7.7.1 Power Saving Mode ..................................... 28

7.7.2 Power Down Mode....................................... 28

7.8 LED Configuration .............................................. 28

7.8.1 LED Blinking Time ...................................... 28

7.8.2 Serial Stream Order ...................................... 29

7.8.3 Bi-Color LED ............................................... 30

7.9 2.5V Power Generation....................................... 31

8. Design and Layout Guide......................................... 32

8.1 General Guidelines............................................... 32

8.2 Differential Signal Layout Guidelines ................. 32

8.3 Clock Circuit........................................................ 32

8.4 2.5V power........................................................... 32

8.5 Power Planes........................................................ 32

8.6 Ground Planes...................................................... 32

8.7 Transformer Options ............................................ 32

9. Application information ........................................... 33

9.1 10Base-T/100Base-TX Application..................... 33

9.2 100Base-FX Application...................................... 34

10. Electrical Characteristics ....................................... 35

10.1 Absolute Maximum Ratings .............................. 35

10.2 Operating Range ................................................ 35

10.3 DC Characteristics ............................................. 35

10.4 AC Characteristics ............................................. 36

10.5 Digital Timing Characteristics ........................... 37

10.6 Thermal Data...................................................... 38

11. Mechanical Dimensions .......................................... 39

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