Register Description
3.5.1.53
Offset 7Bh: SHPC_STS—SHPC Status Register (D0:F0, F2)
Offset:
Default Value: x0h
7Bh
Attribute: RO
Size: 8 bits
Note: When hot plug is disabled (HPx_SLOT[3] = 0), this register is RESERVED.
Bits
Type
Reset
Description
7
RO
x
Controller Interrupt Pending (CIP): This bit is set when one or more bits are
set in the Interrupt Locator register in the SHPC working register set. This bit
is cleared when no bits are set in the Interrupt Locator register.
6
RO
RO
x
Controller System Error Pending (CSP): This bit is set when one or more
bits are set in the SERR Locator register in the SHPC working register set.
This bit is cleared when no bits are set in the SERR Locator register.
5:0
0
Reserved.
3.5.1.54
Offset 7Ch: SHPC_DWORD—SHPC Data Register (D0:F0, F2)
Offset:
Default Value: 00000000h
7C – 7Fh
Attribute: RW/RO
Size: 32 bits
Note: When hot plug is disabled (HPx_SLOT[3] = 0), this register is RESERVED.
Bits
Type
Reset
Description
31:0
RW
0
DWORD Data (DWD): This field allows software to access the SHPC Working
Register set via the Capabilities List Item in Configuration Space. The
DWORD Select field selects the SHPC Working Register set DWORD that is
accessed by reads and writes to this register. Accessing SHPC Working
Register set registers through this field behaves the same as accessing them
through memory-mapped accesses. Multiple accesses to the DWORD Data
register continue to affect the same DWORD if the DWORD Select field is
unchanged. If the PCI-to-PCI bridge integrated with the SHPC is not in the D0
power management state, reads from this register must complete successfully
but the returned value is undefined and the behavior of writes is undefined.
3.5.1.55
Offset D8h: PX_CAPID—PCI-X Capability Identifier Register
(D0:F0, F2)
Offset:
Default Value: 07h
D8h
Attribute: RO
Size: 8 bits
This register identifies this item in the Capabilities list as a PCI-X register set. It returns 07h when
read.
Bits
Type
Reset
Description
7:0
RO
07h
Capability Identifier (CAPID): A value of 07h in this field indicates this is a
PCI-X capabilities list.
110
Intel® 6700PXH 64-bit PCI Hub Datasheet
INTEL [ INTEL ]
