DM9302

10/100Mbps Ethernet Fiber/Twisted Pair Media Converter with Local bus

Preliminary datasheet

7

DM9302-15-DS-P01

July 30, 2009

9.2.13 VLAN Support ........................................................................................................................................ 51

9.2.13.1 Port-Based VLAN................................................................................................................................ 51

9.2.13.2 802.1Q-Based VLAN........................................................................................................................... 51

9.2.13.3 Tag/Untag ........................................................................................................................................... 51

9.2.14 Priority Support ...................................................................................................................................... 51

9.2.14.1 Port-Based Priority .............................................................................................................................. 52

9.2.14.2 802.1p-Based Priority.......................................................................................................................... 52

9.2.14.3 DiffServ-Based Priority........................................................................................................................ 52

9.3 Internal PHY functions .................................................................................................................................. 53

9.3.1 100Base-TX Operation ............................................................................................................................ 53

9.3.1.1 4B5B Encoder ....................................................................................................................................... 53

9.3.1.2 Scrambler.............................................................................................................................................. 53

9.3.1.3 Parallel to Serial Converter ................................................................................................................... 53

9.3.1.4 NRZ to NRZI Encoder ........................................................................................................................... 53

9.3.1.5 MLT-3 Converter ................................................................................................................................... 53

9.3.1.6 MLT-3 Driver ......................................................................................................................................... 53

9.3.1.7 4B5B Code Group................................................................................................................................. 54

9.3.2 100Base-TX Receiver .............................................................................................................................. 55

9.3.2.1 Signal Detect......................................................................................................................................... 55

9.3.2.2 Adaptive Equalization............................................................................................................................ 55

9.3.2.3 MLT-3 to NRZI Decoder........................................................................................................................ 55

9.3.2.4 Clock Recovery Module ........................................................................................................................ 55

9.3.2.5 NRZI to NRZ ......................................................................................................................................... 55

9.3.2.6 Serial to Parallel .................................................................................................................................... 55

9.3.2.7 Descrambler.......................................................................................................................................... 55

9.3.2.8 Code Group Alignment.......................................................................................................................... 56

9.3.2.9 4B5B Decoder....................................................................................................................................... 56

9.3.3 10Base-T Operation................................................................................................................................. 56

9.3.4 Collision Detection ................................................................................................................................... 56

9.3.5 Carrier Sense ........................................................................................................................................... 56

9.3.6 Auto-Negotiation ...................................................................................................................................... 56

10.

DC AND AC ELECTRICAL CHARACTERISTICS ..................................................... 57