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21555 Non-Transparent PCI-to-PCI Bridge User Manual 127
List of Registers
01B:018
Downstream I/O Data and Upstream I/O
Data Registers, page 145
Downstream I/O Data
Indeterminate Primary Primary
01F:01C
Downstream I/O Address and Upstream I/O
Address Registers, page 144
Upstream I/O Address
Indeterminate Secondary Y
023:020
Downstream I/O Data and Upstream I/O
Data Registers, page 145
Upstream I/O Data
Indeterminate Secondary Secondary
024 I/O Own Bits Registers, page 145
I/O Own Byte 0
I/O Own Byte 1
00 N
Primary Read-
0-to-set
025 00 N
Secondary
Read-0-to-set
027:026
I/O CSR, page 146
I/O Own Control and Status
0000 Y Y
028
Lookup Table Offset Register, page 146
Look-up Table Offset
Indeterminate Y Y
02B:029 Reserved 000 N Y
02F:02C
Lookup Table Data Register, page 147
Look-up Table Data
Indeterminate Y Y
033:030
I2O Outbound Post_List Status, page 165
I20 Outbound Post Status
00000000 N Y
037:034
I2O Outbound Post_List Interrupt Mask,
page 165
I20 Outbound Post Mask
00000004 Y Y
03B:038
I2O Inbound Post_List Status, page 165
I20 Inbound Post Status
00000000 N Y
03F:03C
I2O Inbound Post_List Interrupt Mask, page
166
I20 Inbound Post Mask
00000004 Y Y
043:040
I2O Inbound Queue, page 166
I20 Inbound Queue
Indeterminate Primary Primary
047:044
I2O Outbound Queue, page 166
I20 Outbound Queue
Indeterminate Primary Primary
04B:048
I2O Inbound Free_List Head Pointer, page
167
I20 Inbound Free Head Pointer
Indeterminate Y Y
04F:04C
I2O Inbound Post_List Tail Pointer, page
167
I20 Inbound Post Tail Pointer
Indeterminate Y Y
053:050
I2O Outbound Free_List Tail Pointer, page
167
I20 Outbound Free Tail Pointer
Indeterminate Y Y
Table 33. CSR Address Map (Sheet 2 of 5)
Byte
Offset
(Hex)
Register Name Reset Value Write Access Read Access