876784 Intel, 876784 Datasheet - Page 654
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876784
Manufacturer Part Number
876784
Description
Manufacturer
Intel
Datasheet
1.876784.pdf
(848 pages)
Specifications of 876784
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Compliant
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17.1.18
17.1.19
654
PC—Power Management Capabilities Register
(Modem—D30:F3)
Address Offset: 52h
Default Value:
Lockable:
PCS—Power Management Control and Status Register
(Modem—D30:F3)
Address Offset: 54h
Default Value:
Lockable:
This register is not affected by the D3
15:11
10:9
14:9
8:6
2:0
7:2
1:0
Bit
Bit
15
5
4
3
8
PME Support — RO. This field indicates PME# can be generated from all D states.
Reserved.
Auxiliary Current — RO. This field reports 375 mA maximum Suspend well current
required when in the D3
Device Specific Initialization (DSI) — RO. This bit indicates that no device-specific
initialization is required.
Reserved — RO.
PME Clock (PMEC) — RO. This bit indicates that PCI clock is not required to generate
PME#.
Version (VS) — RO. This field indicates support for Revision 1.1 of the PCI Power
Management Specification.
PME Status (PMES) — R/WC.
0 = Software clears this bit by writing a 1 to it.
1 = This bit is set when the AC ’97 controller would normally assert the PME# signal
Reserved — RO.
PME Enable (PMEE) — R/W.
0 = Disable.
1 = Enable. When set, and if corresponding PMES is also set, the AC '97 controller sets
Reserved — RO.
Power State (PS) — R/W. This field is used both to determine the current power state
of the AC ’97 controller and to set a new power state. The values are:
00 = D0 state
01 = not supported
10 = not supported
11 = D3
When in the D3
the I/O and memory spaces are not. Additionally, interrupts are blocked.
If software attempts to write a value of 10b or 01b in to this field, the write operation
must complete normally; however, the data is discarded and no state change occurs.
independent of the state of the PME_En bit. This bit resides in the resume well.
the AC97_STS bit in the GPE0_STS register.
HOT
C9C2h
No
0000h
No
state
HOT
AC ’97 Modem Controller Registers (D30:F3) (Desktop and Mobile Only)
state, the AC ’97 controller’s configuration space is available, but
COLD
state.
HOT
Description
Description
to D0 transition.
Attribute:
Size:
Power Well:
Attribute:
Size:
Power Well:
Intel
RO
16 bits
Core
R/W, R/WC
16 bits
Resume
®
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