w83c554f Winbond Electronics Corp America, w83c554f Datasheet - Page 76
w83c554f
Manufacturer Part Number
w83c554f
Description
System I/o Controller With Pci Arbiter & Ultradma/33 Ide Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83C554F.pdf
(156 pages)
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Part Number:
W83C554F
Manufacturer:
Winbond
Quantity:
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W83C554F
Function:
PCI Arbiter Priority Control Register 1 (default = E0h)
Type:
Bit Description:
WINBOND ELECTRONICS CORP. AMERICA
Bits [7:5]:
Bits [4:3]:
Bits [2:0]:
These register locations are reserved. Software should not attempt to read or write these locations.
Read/Write
Bank [3:1] Rotate Enable. Defaults to 111b (enabled).
Bank 4 Fixed Mode Priority Select.
Bank [3:1] Fixed Mode Priority Select. If 0 upper ones will be chosen, IDEIRQ# priority always
higher than REQ4#
Bit 4
0
0
1
1
3
0
1
0
1
Function
ide –> bk1 –> bk2 –> bk3
bk1 –> bk2 –> bk3 –> ide
bk2 –> bk3 –> ide –> bk1
bk3 –> ide –> bk1 –> bk2
Register Information
74
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