DM8203

2-port switch with MII / RMII Interface

6

Preliminary datasheet

DM8203-15-DS-P05

October 23, 2008

9.3.3 Serial Management Interface .............................................................................................................................. 49

9.3.4 Management Interface - Read Frame Structure............................................................................................... 49

9.3.5 Management Interface - Write Frame Structure............................................................................................... 49

9.4 Internal PHY functions .................................................................................................................................................. 50

9.4.1 100Base-TX Operation......................................................................................................................................... 50

9.4.1.1 4B5B Encoder .................................................................................................................................................... 50

9.4.1.2 Scrambler............................................................................................................................................................ 50

9.4.1.3 Parallel to Serial Converter .............................................................................................................................. 50

9.4.1.4 NRZ to NRZI Encoder ....................................................................................................................................... 50

9.4.1.5 MLT-3 Converter................................................................................................................................................ 50

9.4.1.6 MLT-3 Driver....................................................................................................................................................... 50

9.4.1.7 4B5B Code Group ............................................................................................................................................. 51

9.4.2 100Base-TX Receiver .......................................................................................................................................... 52

9.4.2.1 Signal Detect ...................................................................................................................................................... 52

9.4.2.2 Adaptive Equalization........................................................................................................................................ 52

9.4.2.3 MLT-3 to NRZI Decoder.................................................................................................................................... 52

9.4.2.4 Clock Recovery Module .................................................................................................................................... 52

9.4.2.5 NRZI to NRZ ....................................................................................................................................................... 52

9.4.2.6 Serial to Parallel ................................................................................................................................................. 52

9.4.2.7 Descrambler ....................................................................................................................................................... 52

9.4.2.8 Code Group Alignment...................................................................................................................................... 53

9.4.2.9 4B5B Decoder .................................................................................................................................................... 53

9.4.3 10Base-T Operation ............................................................................................................................................. 53

9.4.4 Collision Detection ................................................................................................................................................ 53

9.4.5 Carrier Sense......................................................................................................................................................... 53

9.4.6 Auto-Negotiation.................................................................................................................................................... 53

9.5 HP Auto-MDIX Functional Descriptions ..................................................................................................................... 53

10.

DC AND AC ELECTRICAL CHARACTERISTICS ..................................................... 55

10.1 Absolute Maximum Ratings ........................................................................................................................................ 55

10.2 Operating Conditions ................................................................................................................................................... 55