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Power Management for the Graphics Controller
© 2009 Advanced Micro Devices, Inc.
45732 AMD 780E Databook 3.10
Proprietary
6-5
6.2.6
Next Item Pointer (Offset = 1)
The Next Item Pointer
register describes the location of the next item in the capability list of the function. The value given
is an offset in the PCI Configuration Space of that function. This register must be set to 00h if the function does not
implement any other capabilities defined by the PCI Specifications for inclusion in the capabilities list, or if power
management is the last item in the list.
Table 6-9 Next Item Pointer (NEXT_ITEM_PTR)
Bits
Default
Value
Read/
Write
Description
07:00
80h
Read Only This field provides an offset in the PCI Configuration Space of the function pointing to the location
of next item in the capability list of the function. For Power Management of the RS780E, this
pointer is set to 80h and it points to the next capability pointer of the MSI structure.
Cap_Ptr = 50h
8 bits
PCI Configuration Header
Offset 34h
02
5Ch
AGP Capability
01
00h
PM Registers
Offset 5Ch
Offset 50h
Figure 6-1 Linked List for Capabilities