Gigabit LAN Configuration Registers
12.1.5
RID—Revision Identification Register
(Gigabit LAN—D25:F0)
Offset Address: 08h
Attribute:
Size:
RO
8 bits
Default Value:
See bit description
Bit
Description
Revision ID — RO. Refer to the Intel® I/O Controller Hub (ICH10) Family
Specification Update for the value of the Revision ID Register
7:0
12.1.6
CC—Class Code Register
(Gigabit LAN—D25:F0)
Address Offset: 09h–0Bh
Attribute:
Size:
RO
24 bits
Default Value:
020000h
Bit
Description
Class Code— RO. Identifies the device as an Ethernet Adapter.
23:0
020000h = Ethernet Adapter.
12.1.7
CLS—Cache Line Size Register
(Gigabit LAN—D25:F0)
Address Offset: 0Ch
Attribute:
Size:
R/W
8 bits
Default Value:
00h
Bit
Description
Cache Line Size — R/W. This field is implemented by PCI devices as a read write field
for legacy compatibility purposes but has no impact on any device functionality.
7:0
12.1.8
12.1.9
PLT—Primary Latency Timer Register
(Gigabit LAN—D25:F0)
Address Offset: 0Dh
Attribute:
Size:
RO
8 bits
Default Value:
00h
Bit
Description
7:0
Latency Timer (LT) — RO. Hardwired to ‘0’.
HT—Header Type Register
(Gigabit LAN—D25:F0)
Address Offset: 0Eh
Attribute:
Size:
RO
8 bits
Default Value:
00h
Bit
Description
Header Type (HT) — RO.
00h = Indicates this is a single function device.
7:0
Datasheet
375
INTEL [ INTEL ]
