DM9000A/DM9000B比較表

Pin difference between DM9000A and DM9000B

Pin	DM9000A	DM9000B
2, 9	2.5V Power out	1.8V Power Out

Application: For pin difference between 2.5V and 1.8V, the board is not need to be modified.

MAC Register difference between DM9000A and DM9000B

Register	Name	DM9000A	DM9000B
2CH	Chip Revision Register	19	1A

EEPROM

No difference

PHY Register difference between DM9000A and DM9000B

Register	Name	DM9000A	DM9000B
03	PHY ID Identifier Register #2	B8A0	B8B0
28		Reserved	0003

Application: If the boot loader or driver from customer will check the MAC register 2CH or PHY register 03 to distinguish the IC is working or not, this should be carefully exam if the board can work on DM9000A but can't get DM9000B.