Intel S975XBX2 Product Specification - Page 51
PCI Configuration Space Map
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Technical Reference 2.4 PCI Configuration Space Map Table 13. PCI Configuration Space Map Bus Device Function Number (hex) Number (hex) 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. 51
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