參數(shù)資料
型號: IBM21P100BGC
元件分類: 總線控制器
英文描述: PCI BUS CONTROLLER, PBGA304
封裝: 31 X 31 MM, PLASTIC, BGA-304
文件頁數(shù): 88/144頁
文件大小: 5197K
代理商: IBM21P100BGC
IBM21P100BGC
IBM 133 PCI-X Bridge R2.0
Configuration Registers
Page 48 of 144
ppb20_pcix_regs.fm.01
October 15, 2001
5.2.4.7 Cache Line Size Register
This register specifies the cache line size in 32-bit DWord units (not used when the interface is in the PCI-X
mode).
Address Offset
x‘0C’
Access
Read/Write
Reset Value
x‘00’
Restrictions
Only one bit can be set at any time, if multiple bits are set or if the bits are in an
invalid setting, these bits default to the 32 DWords setting.
N
o
t
s
up
po
rt
e
d
CacheLineSize
N
o
t
s
up
po
rt
e
d
7
6
5
4
3
2
1
0
Bit(s)
Access
Field Name and Description
7:6
RW
Not supported, must equal b‘00’.
5
RW
If ‘1’, Cache Line = 32 DWords.
4
RW
If ‘1’, Cache Line = 16 DWords.
3
RW
If ‘1’, Cache Line = 8 DWords.
2
RW
If ‘1’, Cache Line = 4 DWords.
1:0
RW
Not supported, must equal b‘00’.
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