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: 122/144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 79 of 144
5.2.5.12 Opaque Memory Enable Register
This register enables the opaque memory base, opaque memory limit, opaque memory base upper 32 bits,
and the opaque memory limit upper 32 bits registers. These registers specify a range of 64-bit memory
addresses that are used exclusively on the secondary PCI bus and are not to be accepted by the bridge on
either the primary or secondary interfaces.
Address Offset
x‘70’
Access
Read/Write
Reset Value
x‘00’
When OPAQUE_EN (pin AA18) is tied low. See
details of strapping considerations.
Reset Value
x‘01’
When OPAQUE_EN (pin AA18) is tied high. See
for details of strapping considerations.
Re
s
e
rv
e
d
O
p
aq
ue
M
e
mo
ry
E
n
ab
le
7
6
5
4
3
2
1
0
Bit(s)
Access
Field Name and Description
7:1
RO
Reserved
0
RW
Opaque Memory Enable
0
Disable the opaque memory address range.
1
Enable the opaque memory address range.
This bit is reset according to the tie value of module pin AA18, OPAQUE_EN.
相关PDF资料
PDF描述
IBM25403GCX-3JC76C2 RISC PROCESSOR, PQFP16
IBM25405GP-3BA200C2 RISC PROCESSOR, PBGA456
IBM25EMPPC603EFG-100 32-BIT, 100 MHz, RISC PROCESSOR, PQFP240
IBM25EMPPC603EBG-100 32-BIT, 100 MHz, RISC PROCESSOR, CBGA255
IBM25EMPPC740LDBC4000 32-BIT, 400 MHz, RISC PROCESSOR, CBGA255
相关代理商/技术参数
参数描述
IBM24L5086 制造商:AVED MEMORY PRODUCTS 功能描述: 制造商:AVED Memory Products 功能描述:
IBM25403GCX-3BC80C2 制造商:IBM 功能描述:RISC PROCESSOR, 160 Pin Plastic BGA
IBM25403GCX-3JC50C2 制造商:IBM 功能描述:403GCX-3JC50C2
IBM25403GCX-3JC66C2 制造商:IBM 功能描述:
IBM25403GCX3JC76C2 制造商:IBM 功能描述: