HP D315 manual PCI Configuration Space Type, Bist

Technical Reference Guide

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.

Configuration

Space

Header

									Register
31	24	23		16	15	8	7	0	Index
									FCh
			Device-Specific Area
									40h
Min. Lat.			Min. GNT		Int. Pin		Int. Line		3Ch
				Reserved					38h
				Reserved					34h
	Expansion ROM Base Address								30h
	Subsystem ID				Subsystem Vendor ID				2Ch
			Card Bus CIS Pointer						28h
			Base Address Registers						10h
	BIST		Hdr. Type		Lat. Timer		Line Size		0Ch
			Class Code				Revision ID		08h
	Status					Command			04h
	Device ID					Vendor ID			00h

										Register
31		24	23		16	15	8	7	0	Index
										FCh
				Device-Specific Area
										40h
		Bridge Control				Int. Pin		Int. Line		3Ch
		Expansion ROM Base Address								38h
					Reserved					34h
I/O Limit Upper 16 Bits						I/O Base Upper 16 Bits				30h
		Prefetchable Limit Upper 32 Bits								2Ch
		Prefetchable Base Upper 32 Bits								28h
	Prefetch. Mem. Limit					Prefetch. Mem. Base				24h
		Memory Limit					Memory Base			20h
		Secondary Status				I/O Limit		I/O Base		1Ch
2	nd	Lat.Tmr		Sub. Bus #		Sec. Bus #		Pri. Bus #		18h
				Base Address Registers						10h
										0Ch
		BIST		Hdr. Type		Lat. Timer		Line Size
				Class Code				Revision ID		08h
		Status					Command			04h
		Device ID					Vendor ID			00h

PCI Configuration Space Type 0		PCI Configuration Space Type 1
	Data required by PCI protocol	Not required

Figure 4-3.PCI Configuration Space Mapping

Each PCI device is identified with a vendor ID (assigned to the vendor by the PCI Special Interest Group) and a device ID (assigned by the vendor). The device and vendor IDs for the devices on the system board are listed in Table 4-2 (NOTE: only devices that are implemented in these systems are listed).

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Second Edition - April 2003