PCI Bridge
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
9-46 Freescale Semiconductor

Figure9-32. PCI Bridge PCI Configuration Registers

The PCI configuration registers are accessible from the core through an indirect method discussed in

“Section 9.11.2.26, PCI Configuration Register Access from the Core” on page 62. The registers are

accessible from the PCI bus through the PCI configuration transaction when the PCI bridge is in agent

mode.

The following sections describe the individual PCI configuration registers.

9.11.2.1 Vendor ID Register

Figure 9-33 and Table9-20 describe the vendor ID register.

3E MIN GNT R 0x00 9.11.2.20/9-57
3F MAX LAT R 0x00 9.11.2.21/9-58
40 Reserved
44 PCI function R/W 0x0000 9.11.2.22/9-58
46 PCI arbiter control register R/W Mode-dependent 9.11.2.23/9-59
48 Hot swap register block R/W 0x00nn_0006 9.11.2.24/9-60
9.11.2.25/9-61
Address offset
(Hex)
00 Device ID (0x18C0) Vendor ID (0x1057)
04 PCI status PCI command
08 Class code Subclass code Standard programming Revision ID
0C BIST control Header type Latency timer Cache line size
10 PIMMR base address register
14 GPLA base address register 0
18 GPLA base address register 1
2C Subsystem ID Subsystem vendor ID
34 Capabilities pointer
38 —
3C MAX LAT MIN GNT Interrupt pin Interrupt line
40 —
44 PCI arbiter control PCI function
48 Hot swap CSR Hot swap capability ID

Table9-19. PCI Bridge PCI Configuration Registers (continued)

Address
(offset) Register Access Reset Section/Page