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7.18 Capability ID and Next Item Pointer Registers
The capability ID and next item pointer register identifies the linked-list capability item and provides a pointer to the
next capability item. See Table 7−15 for a complete description of the register contents.
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Name Capability ID and next item pointer
Type R R R R R R R R R R R R R R R R
Default 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
Register: Capability ID and next item pointer
Offset: 44h
Type: Read-only
Default: 0001h
Table 7−15. Capability ID and Next Item Pointer Registers Description
BIT FIELD NAME TYPE DESCRIPTION
15−8 NEXT_ITEM R
Next item pointer. The PCI7x21/PCI7x11 controller supports only one additional capability that is
communicated to the system through the extended capabilities list; therefore, this field returns 00h
when read.
7−0 CAPABILITY_ID R
Capability identification. This field returns 01h when read, which is the unique ID assigned by the PCI
SIG for PCI power-management capability.