參數(shù)資料
型號(hào): W89C880F
英文描述: LAN Hub Controller
中文描述: 局域網(wǎng)集線器控制器
文件頁數(shù): 30/72頁
文件大?。?/td> 731K
代理商: W89C880F
W89C840F
- 30 -
F10/FBIOA Base I/O Address Register
This register is written by software after power-on to specify W89C840F base I/O address in the system.
Bit
Attribute
Bit name
Description
31: 7
R/W
BIOA
Base I/O Address.
Written by power-on software to specify base I/O address. The
W89C840F requires 128 bytes wide I/O space.
6:1
R
---
Reserved. Fixed at 0.
0
R
IO
I/O Space Indicator.
Fixed at 1.
F14/FBMA Base Memory Address Register
This register is written by power-on software
to specify W89C840F base memory address in the system.
Bit
Attribute
Bit name
Description
31: 7
R/W
BMA
Base Memory Address.
Written by power-on software to specify base memory address.
The
W89C840F requi res
128 bytes wide memory space.
6:1
R
---
Reserved. Fixed at 0.
0
R
MEM
Memory Space Indicator.
Fixed at 0.
F2C/FSSID Subsystem ID Register
This register is loaded from the external EEPROM. The W89C840F will issue a Retry signal to host
when the host tries to access to this register while the EEPROM auto-loading is not yet completed.
Bit
Attribute
Bit name
Description
31:16
R
SBID
Subsystem ID.
Loaded from EEPROM after Hardware reset de-asserted.
15:0
R
SBVID
Subsystem Vendor ID.
Loaded from EEPROM after Hardware reset de-asserted
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