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122 21555 Non-Transparent PCI-to-PCI Bridge User Manual
List of Registers
• “Via Setup” refers to the base address setup register corresponding to that BAR
16.2 Configuration Registers
Table 32 lists the configuration space address registers.
Table 32. Configuration Space Address Register (Sheet 1 of 5)
Byte
Offset
(Hex)
Register Name
Reset Value
(Hex)
Preload
Write
Access
Read
Access
01:00
41:40
Vendor ID Register, page 148 1011 — NY
03:02
43:42
Device ID Register, page 148 B555 — NY
05:04 (P)
45:44 (S)
Primary and Secondary
Command Registers, page 149
0000 — YY
07:06 (P)
47:46 (S)
Primary and Secondary Status
Registers, page 150
0290 — YY
08
48
Revision ID (Rev ID) Register,
page 151
Device
dependent
— NY
0B:09 (P)
4B:49 (S)
Primary and Secondary Class
Code Registers, page 152
068000 Y Secondary Y
0C (P)
4C (S)
Primary and Secondary Cache
Line Size Registers, page 152
00 — YY
0D (P)
4D (S)
Primary Latency and Secondary
Master Latency Timer Registers,
page 153
00 — YY
0E
4E
Header Type Register, page 153 00 — NY
0F
4F
BiST Register, page 153 00 Y
[6] Y
[7,3:0]
Secondary
Y
13:10 (P)
53:50 (S)
Primary CSR and Memory 0 BAR 00000000 Via Setup Y Y
17:14 (P)
57:54 (S)
Primary CSR I/O BAR 00000001 — YY
1B:18 (P)
5B:58 (S)
Downstream Memory 1 BAR 000000000 Via Setup Via Setup Y
1F:1C (P)
5F:5C (S)
Downstream Memory 2 BAR 000000000 Via Setup Via Setup Y
23:20 (P)
63:60 (S)
Downstream Memory 3 BAR 00000000 Via Setup Via Setup Y
27:24 (P)
67:64 (S)
Downstream Memory 3 Upper
32 Bits
00000000 Via Setup Via Setup Y
2B:28
6B:67
Reserved 00000000 — NY
2D:2C
6D:6C
Subsystem Vendor ID Register,
page 154D
0000 Y Secondary Y