Power Management

6.3.3.5 PMCSR_BSE Bridge Support Extensions

1 Byte Offset = 6 (RO)

This register indicates support for PCI bridge specific functions. Note that these functions are not implemented in the Ethernet controller and the values are set to 00h.

6.3.3.6

Data Register

 

 

 

 

 

1 Byte Offset = 7 (RO)

 

 

 

 

 

 

 

 

 

Bits

Default

 

R/W

Description

 

 

 

 

 

 

 

 

 

 

 

00h (loaded

Read

Data returned.

 

 

07:00

from

 

 

Only

See the following explanation.

 

 

 

EEPROM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This register is used to report power consumption and heat dissipation. Its value and meaning is

 

 

determined by the value programmed in the Data_Select field of the Power Management Control/

 

 

Status Register (PMCSR).

 

 

 

 

 

 

 

 

 

Data Select

 

 

Meaning

 

 

 

 

 

 

 

 

 

 

0

 

D0 Power Consumed

 

 

 

 

 

 

 

 

 

 

1

 

D1 Power Consumed

 

 

 

 

 

 

 

 

 

 

2

 

D2 Power Consumed

 

 

 

 

 

 

 

 

 

 

3

 

D3 Power Consumed

 

 

 

 

 

 

 

 

 

 

4

 

D0 Power Dissipated

 

 

 

 

 

 

 

 

 

 

5

 

D1 Power Dissipated

 

 

 

 

 

 

 

 

 

 

6

 

D2 Power Dissipated

 

 

 

 

 

 

 

 

 

 

7

 

D3 Power Dissipated

 

 

 

 

 

 

 

 

 

 

8

 

Common power consumption of multi-function devices

 

 

 

 

 

 

 

 

 

 

9-15

 

Reserved

 

 

 

 

 

 

 

 

 

 

The units are defined by the Data_Scale field of the Power Management Control/Status Register.

Data Select

Meaning

 

 

0

Unknown (used for unsupported states)

 

 

1

0.1 Watts (used by Ethernet controller for supported

states)

 

 

 

2

0.01 Watts

 

 

3

0.001 Watts

 

 

If power management is disabled in the EEPROM, then the data register always reads 0b.

140

Software Developer’s Manual

Page 154
Image 154
Intel PCI-X Pmcsrbse Bridge Support Extensions, Data Register, Byte Offset = 6 RO, Byte Offset = 7 RO, Data Select Meaning