w83c553f Winbond Electronics Corp America, w83c553f Datasheet - Page 82

• Manufacturer Part Number: w83c553f
• Description: System I/o Controller With Pci Arbiter
• Manufacturer: Winbond Electronics Corp America

W83C553F
DMA Command Register (default = 00h)
Type:
Bit Description:
WINBOND SYSTEMS LABORATORY
Bit 7:
Bit 6:
Bit 5:
Bit 4:
Bit 3:
Bit 2:
Bits [1:0]:
Write only
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.
Reserved. Compressed timing. Must be "0".
Controller Enable. (0=Enable; 1=Disable)
Reserved. Memory-to-Memory Transfer Control. Must be "0".
0 = fixed.
1 = rotating.
Electrical Specifications
79