DM9006
2-port Switch with Processor Interface
9.2.18 Port Security........................................................................................................................................... 63
9.2.19 IPv6 MLD Snooping ............................................................................................................................... 63
9.2.20 Spanning Tree Protocol Support............................................................................................................ 64
9.3 Internal PHY functions .................................................................................................................................. 65
9.3.1 100Base-TX Operation ............................................................................................................................ 65
9.3.1.1 4B5B Encoder ....................................................................................................................................... 65
9.3.1.2 Scrambler .............................................................................................................................................. 65
9.3.1.3 Parallel to Serial Converter ................................................................................................................... 65
9.3.1.4 NRZ to NRZI Encoder ........................................................................................................................... 65
9.3.1.5 MLT-3 Converter ................................................................................................................................... 65
9.3.1.6 MLT-3 Driver ......................................................................................................................................... 65
9.3.1.7 4B5B Code Group................................................................................................................................. 66
9.3.2 100Base-TX Receiver .............................................................................................................................. 67
9.3.2.1 Signal Detect ......................................................................................................................................... 67
9.3.2.2 Adaptive Equalization............................................................................................................................ 67
9.3.2.3 MLT-3 to NRZI Decoder........................................................................................................................ 67
9.3.2.4 Clock Recovery Module ........................................................................................................................ 67
9.3.2.5 NRZI to NRZ ......................................................................................................................................... 67
9.3.2.6 Serial to Parallel .................................................................................................................................... 67
9.3.2.7 Descrambler .......................................................................................................................................... 67
9.3.2.8 Code Group Alignment.......................................................................................................................... 68
9.3.2.9 4B5B Decoder....................................................................................................................................... 68
9.3.3 10Base-T Operation................................................................................................................................. 68
9.3.4 Collision Detection ................................................................................................................................... 68
9.3.5 Carrier Sense ........................................................................................................................................... 68
9.3.6 Auto-Negotiation ...................................................................................................................................... 68
10. DC AND AC ELECTRICAL CHARACTERISTICS ..................................................... 69
10.1 Absolute Maximum Ratings ....................................................................................................................... 69
10.2 Operating Conditions.................................................................................................................................. 69
10.3 DC Electrical Characteristics ..................................................................................................................... 70
8
Preliminary datasheet
DM9006-13-DS-P01
September 1, 2009