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Power management control/status, Register: 0xxx – Avago Technologies LSI53C1020 User Manual

Page 99

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PCI Configuration Space Register Descriptions

4-21

Version 2.4

Copyright © 2001–2004 by LSI Logic Corporation. All rights reserved.

Register: 0xXX

Power Management Control/Status
Read/Write

PME_Status

15

The PCI function clears this bit because the LSI53C1020
does not support PME signal generation from D3

cold

.

Data_Scale

[14:13]

The PCI function clears these bits because the
LSI53C1020 does not support the Power Management
Data register.

Data_Select

[12:9]

The PCI function clears these bits because the
LSI53C1020 does not support the Power Management
Data register.

PME_Enable

8

The PCI function clears this bit because the LSI53C1020
does not provide a PME signal and disables PME asser-
tion.

Reserved

[7:2]

This field is reserved.

Power State

[1:0]

These bits determine the current power state of the
LSI53C1020. Power states are as follows:

15

14

13

12

9

8

7

2

1

0

Power Management Control/Status

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0b00

D0

0b01

D1

0b10

D2

0b11

D3

hot

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