W83C553F Datasheet, PDF (63/159 Pages) Winbond – SYSTEM I/O CONTROLLER WITH PCI ARBITER

W83C553F
Electrical Specifications
Line Buffer Control Register (default = 00h)
Type:
Read/Write
Bit Description:
Bits [7:4]:
Bits [3:2]:
Bits [1:0]:
Reserved.
ISA Master Line Buffer Configuration.
Bit 3
2
Function
0
0
Single transaction
0
1
Reserved
1
0
Reserved
1
1
Reserved
DLBC. DMA Line Buffer Configuration.
Bit 1
0
Function
0
0
Single transaction
0
1
Reserved
1
0
Reserved
1
1
Reserved
IDE Interrupt Routing Control Register (default = EFh)
Type:
Read/Write
Bit Description:
Bits [7:4]:
Bits [3:0]:
IRQARCH [3:0]. Routes IDE Primary Port IRQ to the interrupt controller. Defaults to Eh
(IRQ14).
IRQBRCH [3:0]. Routes IDE Secondary Port IRQ to the interrupt controller. Defaults to Fh
(IRQ15).
WINBOND SYSTEMS LABORATORY
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