Datasheet

PCI Express*
Intel
®
Atom™ Processor E6xx Series Datasheet
131
8.2.4.1 PMCAP — Power Management Capability ID
8.2.4.2 PMC — PCI Power Management Capabilities
8.2.4.3 PMCS — PCI Power Management Control And Status
Table 168. Offset A0h: PMCAP — Power Management Capability ID
Size: 16 bit Default: 0001h Power Well: Core
Access
PCI Configuration B:D:F 0:23-26:0
Offset Start:
Offset End:
A0h
A1h
Bit Range Default Access Acronym Description
15 : 08 00h RO NEXT Next Capability: Last item in the list
07 : 00 01h RO CID
Capability Identifier: The value of 01h indicates that this is a PCI power
management capability.
Table 169. Offset A2h: PMC — PCI Power Management Capabilities
Size: 16 bit Default: C802h Power Well: Core
Access
PCI Configuration B:D:F 0:23-26:0
Offset Start:
Offset End:
A2h
A3h
Bit Range Default Access Acronym Description
15 : 11 11001 RO PMES
PME Support: This indicates that PME_B is supported for states D0,
D3
HOT
and D3
COLD
. The root port does not generate PME_B, but reporting
that it does is necessary for legacy Microsoft* operating systems to
enable PME_B in devices connected behind this root port.
10 0 RO D2S D2 Support: The D2 state is not supported.
09 0 RO D1S D1 Support: The D1 state is not supported.
08 : 06 000 RO AC
AUX Current: This reports the 375 mA maximum suspend well current
when in the D3
COLD
state.
05 0 RO DSI
Device Specific Initialization: This indicates that no device-specific
initialization is required.
04 0 RO RSVD Reserved
03 0 RO PMEC
PME Clock: This indicates that the PCI clock is not required to generate
PME_B.
02 : 00 010 RO VS
Version: This indicates support for Revision 1.1 of the PCI Power
Management Specification.
Table 170. Offset A4h: PMCS — PCI Power Management Control And Status (Sheet 1 of 2)
Size: 32 bit Default: 00000000h Power Well: Core
Access
PCI Configuration B:D:F 0:23-26:0
Offset Start:
Offset End:
A4h
A7h
Bit Range Default Access Acronym Description
31 : 16 0 RO RSVD Reserved
15 0 RO PMES
PME Status: This indicates that a PME was received on the downstream
link.
14 : 09 0 RO RSVD Reserved