Specifications

PC BIOS
10-8 PP 41x/03x
10.4.3 PCI Device IDs
Each PCI bus, and each device on an individual PCI bus, has a unique ID. For the PP 41x/03x, the
bus and device IDs are listed in Table 10-2. The PCI bus numbers in this table assume that the
board is fitted into the System Controller slot, that no PMC or XMC modules are fitted and that no
bridges are present on the CompactPCI bus.
If the board is fitted into a Peripheral slot, then the CompactPCI bus will not be visible and
subsequent bus numbers will be one lower (e.g. Ethernet Channel 1 will be on bus 5).
If PMC or XMC modules with on-board bridges are fitted or if bridges are present on the
CompactPCI bus, then several of the busses will move to a higher bus number.
PCI
Express
Link
PCI
Bus
Number
PCI
Device ID
Rev C
PCI
Device ID
Rev B
PCI
Function
Code
Device Name Description
0 0 0
E7520 MCH
0 28 - 31 28 - 31
6300ESB ICH
28 28 0
Hub Interface to PCI-X Bridge
29 29 0
USB Controller #1
1
USB Controller #2
4
Watchdog Timer
5
IOxAPIC (not used)
7
USB 2.0 Controller
30 30 0
Hub Interface to PCI Bridge
31 31 0
PCI to LPC Bridge
1
EIDE Controller
2
SATA Controller
3
SMBus Controller
5
AC’97 Audio Controller
6
AC’97 Modem Controller (not
used)
A or A0 1 0 0
XMC Interface
A1 2 0 0
XMC Interface (second function)
B0 3 0 0
PCI Express to PCI-X Bridge
(PEX8114)
4 6 4 0
PMC Site 2
4 7 5 0
PMC Site 2 (second function)
4 8 8 0
CompactPCI Bridge (PCI6540)
5
CompactPCI Bus
B1 6 0 0 0
Ethernet Channel 1 (82573L)
C0 7 0 0 0
Ethernet Channel 0 (82573L)
C1 8 0 0 0
Ethernet Channel 2 (82573L)
9 4 0 0
PMC Site 1
9 5 1 0
PMC Site 1 (second function)
10 4 4 0
SM722 Graphics Controller
Table 10-2 PCI Device Numbers
NOTE: The BIOS reserves Bus 2 for use with dual-function XMC modules, where PCI
Express Link A divides into two 4-lane links, A0 and A1.