Power management capabilities (pmc) – Avago Technologies LSI53C895A User Manual

Page 124

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4-16

Registers

Registers: 0x42–0x43

Power Management Capabilities (PMC)
Read Only

PMES

PME_Support

[15:11]

Bits [15:11] define the power management states in
which the LSI53C895A will assert the PME pin. These
bits are all set to zero because the LSI53C895A does not
provide a PME signal.

D2S

D2_Support

10

The LSI53C895A sets this bit to indicate support for
power management state D2.

D1S

D1_Support

9

The LSI53C895A sets this bit to indicate support for
power management state D1.

R

Reserved

[8:6]

DSI

Device Specific Initialization

5

This bit is cleared to indicate that the LSI53C895A
requires no special initialization before the generic class
device driver is able to use it.

APS

Auxiliary Power Source

4

Because the LSI53C895A does not provide a PME
signal, this bit is cleared, indicating that no auxiliary
power source is required to support the PME signal in the
D3cold power management state.

PMEC

PME Clock

3

Bit 3 is cleared because the LSI53C895A does not
provide a PME pin.

VER[2:0]

Version

[2:0]

These three bits are set to 010 to indicate that the
LSI53C895A complies with Revision 1.1 of the PCI Power
Management Interface Specification.

15

11

10

9

8

6

5

4

3

2

0

PMES

D2S D1S

R

DSI APS PMEC

VER[2:0]

0

0

0

0

0

1

1

x

x

x

0

0

0

0

1

0

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