DM9016 データシートの表示（PDF） - Davicom Semiconductor, Inc.

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DM9016

10/100 Mbps 3-port Ethernet Switch Controller with General Processor Interface

Davicom Semiconductor, Inc. 

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

Preliminary datasheet

9

DM9016-13-DS-P01

March 26, 2009

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