DM8203
2-port switch with MII / RMII Interface
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
6
Preliminary datasheet
DM8203-15-DS-P05
October 23, 2008
DAVICOM [ DAVICOM SEMICONDUCTOR, INC. ]
