參數(shù)資料
型號: CDK8920A
廠商: Cirrus Logic, Inc.
英文描述: CRYSTAL LAN ISA PLUG-AND-PLAY ETHERNET CONTROLLER
中文描述: 水晶藍(lán)的ISA即插即用,即插即用以太網(wǎng)控制器
文件頁數(shù): 75/144頁
文件大小: 1229K
代理商: CDK8920A
4.8
Plug n Play Resource Registers
Plug n Play Activation Register
Address: PacketPage base + 0330h
2
1
0
0
7
0
6
0
5
0
4
0
3
0
0
Active
BIT
NAME
DESCRIPTION
0
Active
Until this bit is set the CS8920A will not respond to memory, IO (except PNP accesses)
and DMA accesses. When set the CS8920A will respond to modes that are enabled.
All other bits in this register are read as 0 after reset
0000
Plug n Play IO Range Check Register
Address: PacketPage base + 0331h
2
1
0
Check_Enable
7
0
6
0
5
0
4
0
3
0
0
IO_Check
BIT
NAME
DESCRIPTION
0
IO_Check
If the bit 1 (check enable) is set then when two IO_Check bit is clear the PNP read
port is read on 55 when IO_Check bit is set the PNP read port is read AA.
1
Check_Enable
This bit is set to enable the IO range check.
CS8920A
DS238PP2
75
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