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: 121/144页
文件大小: 5197K
代理商: IBM21P100BGC
IBM21P100BGC
IBM 133 PCI-X Bridge R2.0
Configuration Registers
Page 78 of 144
ppb20_pcix_regs.fm.01
October 15, 2001
5.2.5.11 Retry and Timer Status Register
This register indicates if a retry counter or a discard timer has expired since the register was last reset.
Address Offset
x‘6C’
Access
See individual bit descriptions. Reads to this register behave normally. Writes are
slightly different in that bits can be reset, but not set. A bit is reset whenever the
register is written, and the data in the corresponding bit location is a ‘1’.
Reset Value
x‘00’
Re
s
e
rv
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d
P
rim
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ry
D
is
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rd
Ti
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S
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S
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c
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nd
ar
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D
is
c
a
rd
T
im
e
r
S
ta
tu
s
P
ri
m
ar
y
R
e
tr
y
C
o
un
te
r
S
ta
tu
s
Se
c
o
n
d
a
ry
R
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tr
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C
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te
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ta
tu
s
7
6
5
4
3
2
1
0
Bit(s)
Access
FieldNameand Description
7:4
RO
Reserved
3
RW
Primary Discard Timer Status
0
The primary discard timer has not expired since the last reset.
1
The primary discard timer has expired since the last reset.
2
RW
Secondary Discard Timer Status
0
The secondary discard timer has not expired since the last reset.
1
The secondary discard timer has expired since the last reset.
1
RW
Primary Retry Counter Status
0
The primary retry counter has not expired since the last reset.
1
The primary retry counter has expired since the last reset.
0
RW
Secondary Retry Counter Status
0
The secondary retry counter has not expired since the last reset.
1
The secondary retry counter has expired since the last reset.
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