DM9000 datasheet(40/54 Pages) ETC

40 / 54 page

DM9000

ISA to Ethernet MAC Controller with Integrated 10/100 PHY

Final

Version: DM9000-DS-F02

June 26, 2002

Note：

：

1. The IO16 is valid when the SD bus width is 16-bit or

32-bit, and the system address is data port (i.e.

CMD is high) and the value of address port is

memory data register index.（ex. F0H, F2H, F6H or

F8H）

2. The IO32 is valid when the SD bus width is 32-bit,

the system address is data port (i.e. CMD is high)

and the value of address port is memory data

10.4.4 Processor Register Write Timing

Symbol

Parameter

Min.

Typ.

Max.

Unit

System Address Valid to IOW Valid

IOW Width

SD Setup Time

SD Hold Time

IOW Invalid to System Address Invalid

IOW Invalid to Next IOW validaccess DM9000）

System Address Valid to IO16, IO32 Valid

System Address Invalid to IO16, IO32 Invalid

Note：

：

1. The IO16 is valid when the SD bus width is 16-bit or

32-bit and system address is data port (i.e. CMD is

high) and the value of address port is memory data

2. The IO32 is valid when the SD bus width is 32-bit

and system address is data port (i.e. CMD is high)

and the value of address port is memory data

AEN,SA

→

←

IOW

→

∫∫

←

→

←

→

←

IO16,IO32

←

→

Note1.2

,CMD

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