46 vpd capability identifier register - vpd_cap_id, 46vpd capability identifier register - vpd_cap_id, Vpd next item – Intel CONTROLLERS 413808 User Manual

Page 335: Section 3.17.47, Address translation unit (pci express)—intel, Bit default description

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413808 and 413812 I/O Controllers in TPER Mode

October 2007

Developer’s Manual

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335

Address Translation Unit (PCI Express)—Intel

413808 and 413812

3.17.46 VPD Capability Identifier Register - VPD_Cap_ID

The Capability Identifier Register bits adhere to the definitions in the PCI Local Bus

Specification, Revision 2.3. This register in the PCI Extended Capability header

identifies the type of Extended Capability contained in that header. In the case of the

4138xx, this is the VPD extended capability with an ID of 03H as defined by the PCI

Local Bus Specification, Revision 2.3.

3.17.47 VPD Next Item Pointer Register - VPD_Next_Item_Ptr

The Next Item Pointer Register bits adhere to the definitions in the PCI Local Bus

Specification, Revision 2.3. This register describes the location of the next item in the

function’s capability list. For the 4138xx, this the final capability list, and hence, this

Table 186. VPD Capability Identifier Register - VPD_Cap_ID

Bit

Default

Description

07:00

03H

Cap_Id

- This field with its’ 03H value identifies this item in the linked list of Extended Capability

Headers as being the VPD capability registers.

PCI

IOP

Attributes

Attribute Legend:

RV = Reserved

PR = Preserved

RS = Read/Set

RW = Read/Write

RC = Read Clear

RO = Read Only

NA = Not Accessible

Internal Bus Address Offset

+090H

Table 187. VPD Next Item Pointer Register - VPD_Next_Item_Ptr

Bit

Default

Description

07:00

00H

Next_ Item_ Pointer

- This field provides an offset into the function’s configuration space pointing to the

next item in the function’s capability list. Since the VPD capabilities are the last in the linked list of

extended capabilities in the 4138xx, the register is set to 00H.

PCI

IOP