82801DB Datasheet, PDF (301/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4)

LPC Interface Bridge Registers (D31:F0)
9.1.21
PCI_DMA_CFG—PCI DMA Configuration (LPC I/F—D31:F0)
Offset Address:
Default Value:
Lockable:
90h–91h
0000h
No
Attribute:
Size:
Power Well:
R/W
16 bit
Core
Bit
Description
15:14
13:12
11:10
9:8
7:6
5:4
3:2
1:0
Channel 7 Select — R/W.
00 = Reserved
01 = PC/PCI DMA
10 = Reserved
11 = LPC I/F DMA
Channel 6 Select — R/W. Same bit decode as for Channel 7
Channel 5 Select — R/W. Same bit decode as for Channel 7
Reserved
Channel 3 Select — R/W. Same bit decode as for Channel 7
Channel 2 Select — R/W. Same bit decode as for Channel 7
Channel 1 Select — R/W. Same bit decode as for Channel 7
Channel 0 Select — R/W. Same bit decode as for Channel 7
Intel^® 82801DB ICH4 Datasheet
301