Intel S975XBX2 - Workstation Board Motherboard, Specification, Page: 51 / 102

Technical Reference
51
2.4 PCI Configuration Space Map
Table 13. PCI Configuration Space Map
Bus
Number (hex) Device
Number (hex) Function
Number (hex)
Description
00 00 00 Memory controller of Intel 82975X component
00 01 00 PCI Express x16 graphics port
00 1B 00 Intel High Definition Audio controller
00 1C 00 PCI Express port 1
00 1C 01 PCI Express port 2 (Gigabit Ethernet controller bridge)
00 1C 02 PCI Express port 3
00 1C 03 PCI Express port 4 (not used)
00 1D 00 USB UHCI controller 1
00 1D 01 USB UHCI controller 2
00 1D 02 USB UHCI controller 3
00 1D 03 USB UHCI controller 4
00 1D 07 EHCI controller
00 1E 00 PCI bridge
00 1F 00 PCI controller
00 1F 01 Parallel ATA IDE controller
00 1F 02 Serial ATA controller
00 1F 03 SMBus controller
(Note)
00 00 Gigabit Ethernet controller
(Note)
00 00 PCI Conventional bus connector 1
(Note)
01 00 PCI Conventional bus connector 2
(Note)
05 00 IEEE-1394a controller
Note: Bus number is dynamic and can change based on add-in cards used.