参数资料
型号: IBM21P100BGC
元件分类: 总线控制器
英文描述: PCI BUS CONTROLLER, PBGA304
封装: 31 X 31 MM, PLASTIC, BGA-304
文件页数: 103/144页
文件大小: 5197K
代理商: IBM21P100BGC
IBM21P100BGC
IBM 133 PCI-X Bridge R2.0
ppb20_pcix_regs.fm.01
October 15, 2001
Configuration Registers
Page 61 of 144
5.2.4.28 Capabilities Pointer Register
This register specifies a pointer to a capabilities list item in configuration space.
5.2.4.29 Reserved Registers
These registers are reserved and return zeros when read.
5.2.4.30 Interrupt Line Register
This register is a read/write register that is used to communicate interrupt line routing information between
initialization code and the device driver. If a bridge does not implement an interrupt signal pin, then the power
on self test (POST) code must write x‘FF’ to this register.
Address Offset
x‘34’
Access
Read only
Reset Value
x‘80’
Capabilities Pointer
7
6
5
4
3
2
1
0
Bit(s)
Access
Field Name and Description
7:0
RO
Capabilities Pointer
Read-only pointer to a capabilities list in configuration space.
Address Offset
x‘35’
Width
24 bits
Access
Read only
Reset Value
x‘000000’
Address Offset
x‘3C’
Access
Read/Write
Reset Value
x‘XX’
Interrupt Line
7
6
5
4
3
2
1
0
Bit(s)
Access
Field Name and Description
7:0
RW
Interrupt Line
POST code must initialize this register to x‘FF’.
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