參數資料
型號: PCI1620PDV
英文描述: Controller Miscellaneous - Datasheet Reference
中文描述: 控制器雜項-數據表參考
文件頁數: 95/164頁
文件大?。?/td> 720K
代理商: PCI1620PDV
4
27
4.39 Retry Status Register
The contents of the retry status register enable the retry time-out counters and display the retry expiration status. The
flags are set when the PCI1620, as a master, receives a retry and does not retrythe request withinn 2
15
clock cycles.
The flags are cleared by writing a 1 to the bit. Access this register only through function 0. See Table 4
14 for a
complete description of the register contents.
Bit
7
6
5
4
3
2
1
0
Name
Retry status
Type
RW
RW
RC
R
RC
R
RC
R
Default
1
1
0
0
0
0
0
0
Register:
Offset:
Type:
Default:
Retry status
90h (Functions 0, 1)
Read-only, Read/Write, Read/Clear
C0h
Table 4
14. Retry Status Register Description
BIT
SIGNAL
TYPE
FUNCTION
7
PCIRETRY
RW
PCI retry time-out counter enable. This bit is encoded as:
0 = PCI retry counter disabled
1 = PCI retry counter enabled (default)
6
CBRETRY
RW
CardBus retry time-out counter enable. This bit is encoded as:
0 = CardBus retry counter disabled
1 = CardBus retry counter enabled (default)
5
TEXP_CBB
RC
CardBus target B retry expired. Write a 1 to clear this bit.
0 = Inactive (default)
1 = Retry has expired.
4
RSVD
R
Reserved. This bit returns 0 when read.
3
TEXP_CBA
RC
CardBus target A retry expired. Write a 1 to clear this bit.
0 = Inactive (default)
1 = Retry has expired.
2
RSVD
R
Reserved. This bit returns 0 when read.
1
TEXP_PCI
RC
PCI target retry expired. Write a 1 to clear this bit.
0 = Inactive (default)
1 = Retry has expired.
0
RSVD
R
Reserved. This bit returns 0 when read.
These bits are global in nature and should be accessed only through function 0.
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