Datasheet

Classic PCI Configuration Space
59
March 5 2007 − June 2011 SCPS154C
4.47 Next Item Pointer Register
The contents of this read-only register indicate the next item in the linked list of capabilities for the bridge. This
register reads 00h indicating no additional capabilities are supported.
PCI register offset: 91h
Register type: Read-only
Default value: 00h
BIT NUMBER 7 6 5 4 3 2 1 0
RESET STATE 0 0 0 0 0 0 0 0
4.48 PCI Express Capabilities Register
This read-only register indicates the capabilities of the bridge related to PCI Express. See Table 4−24 for a
complete description of the register contents.
PCI register offset: 92h
Register type: Read-only
Default value: 0071h
BIT NUMBER 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RESET STATE 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1
Table 4−24. PCI Express Capabilities Register Description
BIT FIELD NAME ACCESS DESCRIPTION
15:9 RSVD R Reserved. Returns 000 0000b when read.
8 SLOT R Slot implemented. This bit is not valid for the bridge and is read-only 0b.
7:4 DEV_TYPE R
Device/port type. This read-only field returns 0111b indicating that the device is a PCI
Express-to-PCI bridge.
3:0 VERSION R Capability version. This field returns 1h indicating revision 1 of the PCI Express capability.
Not Recommended for New Designs