DM9016
3-port switch with Processor Interface
9.3 MII Interface.................................................................................................................................................... 72
9.3.1 MII data interface ..................................................................................................................................... 72
9.3.2 MII Serial Management............................................................................................................................ 72
9.3.3 Serial Management Interface................................................................................................................... 73
9.3.4 Management Interface - Read Frame Structure ...................................................................................... 73
9.3.5 Management Interface - Write Frame Structure ...................................................................................... 73
9.4 Internal PHY functions.................................................................................................................................. 74
9.4.1 100Base-TX Operation ............................................................................................................................ 74
9.4.1.1 4B5B Encoder....................................................................................................................................... 74
9.4.1.2 Scrambler.............................................................................................................................................. 74
9.4.1.3 Parallel to Serial Converter ................................................................................................................... 74
9.4.1.4 NRZ to NRZI Encoder........................................................................................................................... 74
9.4.1.5 MLT-3 Converter................................................................................................................................... 74
9.4.1.6 MLT-3 Driver ......................................................................................................................................... 74
9.4.1.7 4B5B Code Group................................................................................................................................. 75
9.4.2 100Base-TX Receiver.............................................................................................................................. 76
9.4.2.1 Signal Detect......................................................................................................................................... 76
9.4.2.2 Adaptive Equalization............................................................................................................................ 76
9.4.2.3 MLT-3 to NRZI Decoder........................................................................................................................ 76
9.4.2.4 Clock Recovery Module ........................................................................................................................ 76
9.4.2.5 NRZI to NRZ ......................................................................................................................................... 76
9.4.2.6 Serial to Parallel.................................................................................................................................... 76
9.4.2.7 Descrambler.......................................................................................................................................... 76
9.4.2.8 Code Group Alignment.......................................................................................................................... 77
9.4.2.9 4B5B Decoder....................................................................................................................................... 77
9.4.3 10Base-T Operation................................................................................................................................. 77
9.4.4 Collision Detection ................................................................................................................................... 77
9.4.5 Carrier Sense........................................................................................................................................... 77
9.4.6 Auto-Negotiation ...................................................................................................................................... 77
10.
DC AND AC ELECTRICAL CHARACTERISTICS..................................................... 78
10.1 Absolute Maximum Ratings ....................................................................................................................... 78
Preliminarydatasheet
DM9016-13-DS-P01
March 26, 2009
9
DAVICOM [ DAVICOM SEMICONDUCTOR, INC. ]
