Motorola PowerQUICC II MPC8280 Series Reference Manual page 371

9.11.2 PCI Bridge Configuration Registers
The PCI Local Bus Specification defines the configuration registers from 0x00 through
0x3F. Additionally, the PCI bridge specifies these additional registers: the PCI function
register (at offset 0x44), the PCI arbiter control register (at offset 0x46), and the PCI Hot
Swap register block (at offset 0x48). Table 9-19 and Figure 9-32 shows the PCI
configuration registers provided by the PCI bridge for the PCI bus.
Note the following sections that apply to all PCI configuration registers (they appear
immediately after the descriptions of individual registers):
• Section 9.11.2.26, "PCI Configuration Register Access from the Core," on
page 9-66
• Section , "Accesses to CFG_DATA without a valid offset in CFG_ADDR generates
an I/O transaction on the PCI bus.," on page 9-66
• Section 9.11.2.28, "Initializing the PCI Configuration Registers," on page 9-69
Table 9-19. PCI Bridge PCI Configuration Registers
Address
(offset)
00 Vendor ID
02 Device ID
04 PCI command
06 PCI status
08 Revision ID
09 Standard programming interface
0A Subclass code
0B Class code
0C Cache line size
0D Latency timer
0E Header type
0F BIST control
10 PIMMR base address register
14 GPL base address register 0
18 GPL base address register 1
1C Reserved
2C Sub system vendor ID
2E Sub system device ID
30 Reserved
34 Capabilities pointer
MOTOROLA
Freescale Semiconductor, Inc.
Register
Chapter 9. PCI Bridge
For More Information On This Product,
Go to: www.freescale.com
Configuration Registers
Access Reset
R 0x1057
R 0x18C0
R/W Mode-dependent 9.11.2.3 / 51
Read/bit-reset 0x00B0
R Rev-dependent 9.11.2.5 / 54
R Mode-dependent 9.11.2.6 / 54
R 0x00
R Mode-dependent 9.11.2.8 / 55
R/W 0x00
R/W 0x00
R 0x00
R 0x00
R/W 0xnnnn_0000
R/W 0x0000_0000
R/W 0x0000_0000
— —
R/W 0x0000
R/W 0x0000
— —
R 0x48
Section/Page
9.11.2.1 / 51
9.11.2.2 / 51
9.11.2.4 / 52
9.11.2.7 / 55
9.11.2.9 / 56
9.11.2.10 / 56
9.11.2.11 / 57
9.11.2.12 / 57
9.11.2.13 / 57
9.11.2.14 / 58
9.11.2.14 / 58
—
9.11.2.15 / 59
9.11.2.16 / 60
—
9.11.2.17 / 60
9-49