參數(shù)資料
型號: W83C554F
英文描述: W83C554F Highly Integrated System I/O Controller for Power PC TM (South Bridge) & UltraDMA/33 IDE Controller QFP 208
中文描述: W83C554F高度集成的系統(tǒng)的I / O控制器的Power PC商標(南橋)
文件頁數(shù): 78/159頁
文件大小: 3991K
代理商: W83C554F
W83C553F
Electrical Specifications
WINBOND SYSTEMS LABORATORY
75
Function
:
These register locations are reserved. Software should not attempt to read or write these locations.
PCI Arbiter Priority Control Register 1 (default = E0h)
Type:
Read/Write
Bit Description
:
Bits [7:5]:
Bank [3:1] Rotate Enable. Defaults to 111b (enabled).
Bits [4:3]:
Bank 4 Fixed Mode Priority Select.
Bit 4
3
0
0
0
1
1
0
1
1
Bits [2:0]:
Bank [3:1] Fixed Mode Priority Select. If 0 upper ones will be chosen, IDEIRQ# priority always
higher than REQ4#
Function
ide –> bk1 –> bk2 –> bk3
bk1 –> bk2 –> bk3 –> ide
bk2 –> bk3 –> ide –> bk1
bk3 –> ide –> bk1 –> bk2
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