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RTL8208B

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

Realtek Semiconductor 

RTL8208B-LF/RTL8208BF-LF

Datasheet

7.5. BASELINE WANDER COMPENSATION ..........................................................................................................................31

7.6. 100BASE-FX (RTL8208BF-LF ONLY) ......................................................................................................................31

7.6.1. Transmit Function ................................................................................................................................................32

7.6.2. Receive Function ..................................................................................................................................................32

7.6.3. Link Monitor.........................................................................................................................................................32

7.6.4. Far-End-Fault-Indication.....................................................................................................................................32

7.6.5. Reduced Fiber Interface .......................................................................................................................................33

7.7. RMII/SMII/SS-SMII .................................................................................................................................................33

7.7.1. RMII (Reduced MII) .............................................................................................................................................34

7.7.2. SMII (Serial MII)..................................................................................................................................................35

7.7.3. SS-SMII (Source Synchronous -Serial MII) ..........................................................................................................36

7.8. POWER SAVING AND POWER DOWN MODE ................................................................................................................38

7.8.1. Power Saving Mode..............................................................................................................................................38

7.8.2. Reg0.11 Power Down Mode .................................................................................................................................38

7.9. LED CONFIGURATION................................................................................................................................................38

7.9.1. Serial LEDs ..........................................................................................................................................................38

7.9.2. Scan LED..............................................................................................................................................................41

7.10. CROSSOVER DETECTION AND AUTO CORRECTION .....................................................................................................46

7.11. POLARITY DETECTION AND AUTO CORRECTION ........................................................................................................46

7.12. 1.8V POWER GENERATION .........................................................................................................................................47

7.13. CABLE TESTER...........................................................................................................................................................47

8. APPLICATION INFORMATION ....................................................................................................................................48

8.1. 10BASE-T/100BASE-TX APPLICATION ......................................................................................................................48

8.2. 100BASE-FX APPLICATION (RTL8208BF-LF ONLY) .................................................................................................49

9. CHARACTERISTICS .......................................................................................................................................................50

9.1. ABSOLUTE MAXIMUM RATINGS.................................................................................................................................50

9.2. OPERATING RANGE ....................................................................................................................................................50

9.3. DC CHARACTERISTICS...............................................................................................................................................50

9.4. AC CHARACTERISTICS...............................................................................................................................................52

9.5. DIGITAL TIMING CHARACTERISTICS...........................................................................................................................52

9.5.1. RMII Receive Timing ............................................................................................................................................53

9.5.2. RMII Transmit Timing ..........................................................................................................................................54

9.5.3. SMII Receive Timing.............................................................................................................................................54

9.5.4. SMII Transmit Timing...........................................................................................................................................55

9.5.5. SS-SMII Receive Timing .......................................................................................................................................55

9.5.6. SS-SMII Transmit Timing......................................................................................................................................56

9.6. POWER START UP & INTERNAL RESET SEQUENCE .....................................................................................................56

9.7. THERMAL CHARACTERISTICS.....................................................................................................................................57

9.7.1. Thermal Operating Range ....................................................................................................................................57

9.7.2. Thermal Resistances.............................................................................................................................................57

10. MECHANICAL DIMENSIONS ...................................................................................................................................58

10.1. NOTES FOR MECHANICAL DIMENSIONS .....................................................................................................................59

11. ORDERING INFORMATION......................................................................................................................................59

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

iv

Track ID: JATR-1076-21 Rev. 1.3

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