參數(shù)資料
型號: IBM21P100BGB
元件分類: 總線控制器
英文描述: PCI BUS CONTROLLER, PBGA304
封裝: 31 X 31 MM, HEAT SINK, PLASTIC, BGA-304
文件頁數(shù): 116/140頁
文件大小: 2032K
代理商: IBM21P100BGB
IBM21P100BGB
IBM 133 PCI-X Bridge R1.1
ppb11_pcix_regs.fm.03
July 9, 2001
Configuration Registers
Page 69 of 131
5.2.5.11 Retry and Timer Status Register
The Retry and Timer Status 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’
Res
e
rv
ed
P
rim
ary
Dis
c
a
rd
Timer
S
tatus
Sec
ondary
Discar
d
T
imer
S
ta
tu
s
Prim
ary
R
et
ry
Count
er
S
tat
us
Sec
ondary
R
et
ry
Count
er
S
tat
us
7654321
0
Bit(s)
Access
Field Name and Description
7:4
RO
Reserved
3RW
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.
2RW
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.
1RW
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.
0RW
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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