12−11
12.17 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 12−12 for a complete description of the register contents.
Bit 15 14 13 12 11 109876543210
Name Capability ID and next item pointer
Type RRRRRRRRRRRRRRRR
Default 0000000000000001
Register: Capability ID and next item pointer
Offset: 80h
Type: Read-only
Default: 0001h
Table 12−12. Capability ID and Next Item Pointer Registers Description
BIT FIELD NAME TYPE DESCRIPTION
15−8 NEXT_ITEM R Next item pointer. The SD host controller supports only one additional capability, PCI power
management, 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.