Register Description

12.2.41Offset 70h: PM_PMCSR—Power Management Control/Status Register

Table 75.

Offset 70h: PM_PMCSR—Power Management Control/Status Register

 

 

 

 

 

 

Bits

 

Type

Reset

 

Description

 

 

 

 

 

15

 

RO

0b

PME Status: Not supported

 

 

 

 

 

14:13

 

RO

00h

Data Scale: Not supported

 

 

 

 

 

12:9

 

RO

0h

Data Select: Not supported

 

 

 

 

 

8

 

RWS

0b

PME En: Not supported

 

 

 

 

 

7:2

 

RsvdP

00 0000b

Preserved

 

 

 

 

 

 

 

 

 

Power State: This 2-bit field is used both to determine the current power state of a function

 

 

 

 

and to set the function into a new power state. Supported field values are given below.

 

 

 

 

00b = D0

 

 

 

 

01b = Reserved

1:0

 

RW

00b

10b = Reserved

 

 

 

 

11b = D3 hot

 

 

 

 

When the software attempts to write an unsupported, optional state to this field, the write

 

 

 

 

operation must complete normally on the bus; however, the data is discarded and no state

 

 

 

 

change occurs.

 

 

 

 

 

 

12.2.42Offset 72h: PM_BSE—Power Management Bridge Support Extensions

Table 76.

Offset 72h: PM_BSE—Power Management Bridge Support Extensions

 

 

 

 

 

Bits

 

Type

Reset

Description

 

 

 

 

 

7

 

RO

0b

BPCC_En (Bus Power/Clock Control Enable): Neither bus or clock control of PCI is

 

supported when in D3hot state. This bit is hard-wired to 0.

 

 

 

 

 

 

 

 

 

6

 

RO

0b

B2/B3#: Not supported. This bit has no meaning since the BPCC_En bit is hard-wired to 0.

 

 

 

 

 

5:0

 

RsvdP

00h

Preserved

 

 

 

 

 

12.2.43Offset 73h: PM_DATA—Power Management Data Field

Table 77. Offset 73h: PM_DATA—Power Management Data Field

Bits

Type

Reset

Description

 

 

 

 

7:0

RO

00h

Data: Not supported

 

 

 

 

Intel® 41210 Serial to Parallel PCI Bridge Developer’s Manual

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Image 99
Intel 41210 Offset 70h PMPMCSR-Power Management Control/Status Register, Offset 73h PMDATA-Power Management Data Field