DM9000A

Ethernet Controller with General Processor Interface

Final

2

Version: DM9000A-17-DS-F01

May 10, 2006

Content

1. General Description............................................................................................................................................................ 6

2. Block Diagram .................................................................................................................................................................... 6

3. Features ............................................................................................................................................................................... 7

4. Pin Configuration ............................................................................................................................................................... 8

4.1 (16-bit mode) ................................................................................................................................................................. 8

4.2 (8-bit mode) ................................................................................................................................................................... 9

5. Pin Description.................................................................................................................................................................. 10

5.1 Processor Interface ...................................................................................................................................................... 10

5.1.1 8-bit mode pins.......................................................................................................................................................... 10

5.2 EEPROM Interface .......................................................................................................................................................11

5.3 Clock Interface..............................................................................................................................................................11

5.4 LED Interface ...............................................................................................................................................................11

5.5 10/100 PHY/Fiber.........................................................................................................................................................11

5.6 Miscellaneous .............................................................................................................................................................. 12

5.7 Power Pins................................................................................................................................................................... 12

5.8 strap pins table ............................................................................................................................................................ 12

6. Vendor Control and Status Register Set ......................................................................................................................... 13

6.1 Network Control Register (00H).................................................................................................................................. 14

6.2 Network Status Register (01H) .................................................................................................................................... 15

6.3 TX Control Register (02H)........................................................................................................................................... 15

6.4 TX Status Register I ( 03H ) for packet index I ............................................................................................................ 15

6.5 TX Status Register II ( 04H ) for packet index I I......................................................................................................... 16

6.6 RX Control Register ( 05H ) ........................................................................................................................................ 16

6.7 RX Status Register ( 06H ) ........................................................................................................................................... 16

6.8 Receive Overflow Counter Register ( 07H ) ................................................................................................................ 17

6.9 Back Pressure Threshold Register (08H) ..................................................................................................................... 17

6.10 Flow Control Threshold Register ( 09H ) .................................................................................................................. 17

6.11 RX/TX Flow Control Register ( 0AH ) ....................................................................................................................... 19

6.12 EEPROM & PHY Control Register ( 0BH )............................................................................................................... 19

6.13 EEPROM & PHY Address Register ( 0CH ) .............................................................................................................. 19