Справочник Пользователя для HP A2Y15AV
Processor Configuration Registers
168
Datasheet, Volume 2
2.10.6
CC—Class Code Register
This register identifies the basic function of the device, a more specific sub-class, and a
register- specific programming interface.
register- specific programming interface.
2.10.7
CL—Cache Line Size Register
2.10.8
HDR—Header Type Register
B/D/F/Type:
0/6/0/PCI
Address Offset:
9–Bh
Reset Value:
060400h
Access:
RO
Size:
24 bits
Bit
Access
Reset
Value
RST/
PWR
Description
23:16
RO
06h
Uncore
Base Class Code (BCC)
Indicates the base class code for this device. This code has the
Indicates the base class code for this device. This code has the
value 06h indicating a Bridge device.
15:8
RO
04h
Uncore
Sub-Class Code (SUBCC)
Indicates the sub-class code for this device. The code is 04h
Indicates the sub-class code for this device. The code is 04h
indicating a PCI to PCI Bridge.
7:0
RO
00h
Uncore
Programming Interface (PI)
Indicates the programming interface of this device. This value
Indicates the programming interface of this device. This value
does not specify a particular register set layout and provides no
practical use for this device.
B/D/F/Type:
0/6/0/PCI
Address Offset:
Ch
Reset Value:
00h
Access:
RW
Size:
8 bits
Bit
Access
Reset
Value
RST/
PWR
Description
7:0
RW
00h
Uncore
Cache Line Size (CLS)
Implemented by PCI Express devices as a read-write field for
Implemented by PCI Express devices as a read-write field for
legacy compatibility purposes but has no impact on any PCI
Express device functionality.
B/D/F/Type:
0/6/0/PCI
Address Offset:
Eh
Reset Value:
81h
Access:
RO
Size:
8 bits
Bit
Access
Reset
Value
RST/
PWR
Description
7:0
RO
81h
Uncore
Header Type Register (HDR)
Device 1 returns 81h to indicate that this is a multi function
Device 1 returns 81h to indicate that this is a multi function
device with bridge header layout.
Device 6 returns 01h to indicate that this is a single function
Device 6 returns 01h to indicate that this is a single function
device with bridge header layout.