IDT 89HPES64H16G2 User Manual page 238

IDT PCI to PCI Bridge and Proprietary Port Specific Registers
Bit
Field
18:16
19
20
21
24:22
25
26
31:27
PMCSR - PCI Power Management Control and Status (0x0C4)
Bit
Field
1:0
2
3 NOSOFTRST
7:4
PES64H16G2 User Manual
Field Default
Type
Name Value
VER RO 0x3
PMECLK RO 0x0
Reserved RO 0x0
DEVSP RWL 0x0
AUXI RO 0x0
D1 RO 0x0
D2 RO 0x0
PME RWL 0b11001
Field Default
Type
Name Value
PSTATE RW 0x0
Reserved RO 0x0
RWL 0x1
Reserved RO 0x0
Description
Power Management Capability Version. This field indicates
compliance with version two of the specification.
Complies with version the PCI Bus Power Management Interface
Specification, Revision 1.2.
PME Clock. Does not apply to PCI Express.
Reserved field.
Device Specific Initialization. The value of zero indicates that no
device specific initialization is required.
AUX Current. The PES64H16G2 does not use auxiliary current.
D1 Support. This field indicates that the PES64H16G2 does not
support D1.
D2 Support. This field indicates that the PES64H16G2 does not
support D2.
PME Support. This field indicates the power states in which the
port may generate a PME.
Bits 27, 30 and 31 are set to indicate that the P2P bridge within the
switch will forward PME messages.
The switch does not forward PME messages in D3
tionality may be supported in the system by routing WAKE# around
the switch.
Modification of this field modifies the advertised capability value
but does not modify the device behavior (i.e., PME is generated in
the states noted in the default value).
Description
Power State. This field is used to determine the current power
state and to set a new power state.
0x0 - (d0) D0 state
0x1 -(d1) D1 state (not supported by the switch and reserved)
0x2 -(d2) D2 state (not supported by the switch and reserved)
0x3 -(d3) D3 state
hot
Reserved field.
No Soft Reset. This bit indicates if the configuration context is pre-
served by the bridge when the device transitions from a D3hot to
D0 power management state.
0x0 - (reset) State reset
0x1 - (preserved) State preserved
Reserved field.
16 - 28
. This func-
cold
April 5, 2013