DM9000_09 DAVICOM [Davicom Semiconductor, Inc.], DM9000_09 Datasheet - Page 40

• Manufacturer Part Number: DM9000_09
• Description: ISA to Ethernet MAC Controller with Integrated 10/100 PHY
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

Note：
1. The IO16 is valid when the SD bus width is 16-bit or
10.4.4 Processor Register Write Timing
Note：
1. The IO16 is valid when the SD bus width is 16-bit or
Final
Version: DM9000-DS-F03
April 23, 2009
IO16,IO32
AEN,SA
IOW
SD
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）
32-bit and 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）
Symbol
T
T
T
T
T
T
T
T
1
2
3
4
5
6
7
8
,CMD
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
→
→
T1
←
Parameter
←
←
T7
←
ISA to Ethernet MAC Controller with Integrated 10/100 PHY
T2
T3
2. The IO32 is valid when the SD bus width is 32-bit,
→
2. The IO32 is valid when the SD bus width is 32-bit
→
→
→
register index（ex. F0H, F2H, F6H or F8H）
register index (ex. F0H, F2H, F6H or F8H)
the system address is data port (i.e. CMD is high)
and the value of address port is memory data
and system address is data port (i.e. CMD is high)
and the value of address port is memory data
←
→
Min.
←
←
22
84
22
5
5
5
T6
←
T5
T4
∫∫
Typ.
T8
→
Max.
5
5
Note1.2
Unit
ns
ns
ns
ns
ns
ns
ns
ns
DM9000
40