876784 Intel, 876784 Datasheet - Page 389

• Manufacturer Part Number: 876784
• Manufacturer: Intel

Specifications of 876784

• Lead Free Status / RoHS Status: Compliant

LPC Interface Bridge Registers (D31:F0)
10.2.6
Intel
®
ICH7 Family Datasheet
DMA_WRSMSK—DMA Write Single Mask Register
(LPC I/F—D31:F0)
I/O Address:
Default Value:
Lockable:
7:3
1:0
Bit
2
Reserved. Must be 0.
Channel Mask Select — WO.
0 = Enable DREQ for the selected channel. The channel is selected through bits [1:0].
1 = Disable DREQ for the selected channel.
DMA Channel Select — WO. These bits select the DMA Channel Mode Register to
program.
00 = Channel 0 (4)
01 = Channel 1 (5)
10 = Channel 2 (6)
11 = Channel 3 (7)
Therefore, only one channel can be masked / unmasked at a time.
Ch. #0
Ch. #4
0000 01xx
No
–
–
3 = 0Ah;
7 = D4h
Description
Attribute:
Size:
Power Well:
WO
8-bit
Core
389