W83C553F Datasheet, PDF (82/159 Pages) Winbond – SYSTEM I/O CONTROLLER WITH PCI ARBITER

W83C553F
Electrical Specifications
DMA Command Register (default = 00h)
Type:
Write only
Bit Description:
Bit 7:
Bit 6:
Bit 5:
Bit 4:
Bit 3:
Bit 2:
Bits [1:0]:
Reserved.
DRQ Active Level. When this bit is "0" (default), DRQ is active high. When this bit is "1," DRQ
is active low.
Reserved. Extended/Late Write Select. Must be "0".
Priority Scheme.
0 = fixed.
1 = rotating.
Reserved. Compressed timing. Must be "0".
Controller Enable. (0=Enable; 1=Disable)
Reserved. Memory-to-Memory Transfer Control. Must be "0".
WINBOND SYSTEMS LABORATORY
79