NH82801FBM S L89K Intel, NH82801FBM S L89K Datasheet - Page 169

• Manufacturer Part Number: NH82801FBM S L89K
• Manufacturer: Intel

Specifications of NH82801FBM S L89K

• Lead Free Status / RoHS Status: Compliant

Table 5-35. Write Only Registers with Read Paths in ALT Access Mode (Sheet 2 of 2)
5.14.10.2
Intel
Addr
20h
I/O
Table 5-36. PIC Reserved Bits Return Values
®
I/O Controller Hub 6 (ICH6) Family Datasheet
Rds
# of
12
Access
NOTES:
PIC Reserved Bits
Many bits within the PIC are reserved, and must have certain values written in order for the PIC to
operate properly. Therefore, there is no need to return these values in ALT access mode. When
reading PIC registers from 20h and A0h, the reserved bits shall return the values listed in
Table
10
11
12
1. The OCW1 register must be read before entering ALT access mode.
2. Bits 5, 3, 1, and 0 return 0.
1
2
3
4
5
6
7
8
9
PIC Reserved Bits
5-36.
Restore Data
PIC ICW2 of Master controller
PIC ICW3 of Master controller
PIC ICW4 of Master controller
PIC OCW1 of Master controller
PIC OCW2 of Master controller
PIC OCW3 of Master controller
PIC ICW2 of Slave controller
PIC ICW3 of Slave controller
PIC ICW4 of Slave controller
PIC OCW1 of Slave controller
PIC OCW2 of Slave controller
PIC OCW3 of Slave controller
OCW2(4:3)
OCW3(4:3)
ICW2(2:0)
ICW4(7:5)
ICW4(3:2)
OCW3(7)
OCW3(5)
ICW4(0)
Data
Value Returned
1
1
Reflects bit 6
000
000
00
00
01
0
0
Addr
D0h
I/O
# of
Rds
6
Access
1
2
3
4
5
6
Restore Data
DMA Chan 4–7 Command
DMA Chan 4–7 Request
DMA Chan 4 Mode: Bits(1:0) = 00
DMA Chan 5 Mode: Bits(1:0) = 01
DMA Chan 6 Mode: Bits(1:0) = 10
DMA Chan 7 Mode: Bits(1:0) = 11.
Functional Description
Data
2
169