4.41 Capability ID Register

The capability ID register identifies the linked list item as the register for PCI power management. The register returns 01h when read, which is the unique ID assigned by the PCI SIG for the PCI location of the capabilities pointer and the value.

Bit

7

6

5

4

 

3

2

1

0

 

 

 

 

 

 

 

 

 

 

Name

 

 

 

 

Capability ID

 

 

 

 

 

 

 

 

 

 

 

 

 

Type

R

R

R

R

 

R

R

R

R

 

 

 

 

 

 

 

 

 

 

Default

0

0

0

0

 

0

0

0

1

Register: Capability ID

Offset: A0h

Type: Read-only

Default: 01h

4.42 Next Item Pointer Register

The contents of this register indicate the next item in the linked list of the PCI power management capabilities. Because the PCI7x21/PCI7x11 functions only include one capabilities item, this register returns 0s when read.

Bit

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

Name

 

 

 

Next item pointer

 

 

 

 

 

 

 

 

 

 

 

 

Type

R

R

R

R

R

R

R

R

 

 

 

 

 

 

 

 

 

Default

0

0

0

0

0

0

0

0

Register: Next item pointer

Offset: A1h

Type: Read-only

Default: 00h

4−31

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Image 121
Texas Instruments PCI7611, PCI7411, PCI7621 manual Capability ID Register, Next Item Pointer Register, Register Capability ID