Technical Reference Guide
Compaq iPAQ Family of Internet Devices
First Edition - March 2000
4-5
Not required
The register index (CF8h, bits <7..2>) identifies the 32-bit location within the configuration
space of the PCI device to be accessed. All PCI devices can contain up to 256 bytes of
configuration data (Figure 4-3), of which the first 64 bytes comprise the configuration space
header.
Figure 4-3.
PCI Configuration Space Map
Each PCI device is identified with a vender ID (assigned to the vender by the PCI Special Interest
Group) and a device ID (assigned by the vender). The device and vender IDs for the devices on
the system board are listed in Table 4-2.
Table 4-2.
System Board
PCI Device Identification
Table 4-2.
System Board PCI Device Identification
PCI Device Vender ID Device ID
82810e GMCH:
Memory Controller
AGP Bridge
8086h
8086h
2500h
2501h
82801 ICH:
PCI Bridge
LPC Bridge
EIDE Controller
USB I/F
SMBus Controller
AC97 Audio Controller
8086h
8086h
8086h
8086h
8086h
8086h
2418h
2410h
2411h
2412h
2413h
2415h
82559 Network I/F Controller 8086h 1229h
00h
Configuration
Space
Header
Vender ID
Data required by PCI protocol
Base Address Registers and Exp. ROM Address
Register
Index
31
Cache Line Size
Latency Timer
Device ID
Command
Status
Revision IDClass Code
Header T
pe
BIST
Device-Specific Area
Interrupt LineInterrupt PinMin_GNTMin_Lat
24 23 16 15 8 7 0
04h
08h
0Ch
3Ch
40h
FCh
