Advance Information Page 60 of 114 JUNE 2008 REVISION 1.1 Secondary Detected Parity Detected Bi" />
參數(shù)資料
型號(hào)： PI7C8154BNAIE
廠商： Pericom
文件頁數(shù)： 72/114頁
文件大小： 0K
描述： IC PCI-PCI BRIDGE ASYNC 304-PBGA
產(chǎn)品變化通告： Product Discontinuation Notice 22/Jan/2010
標(biāo)準(zhǔn)包裝： 27
系列： *
應(yīng)用： *
接口： *
電源電壓： *
封裝/外殼： 304-BBGA
供應(yīng)商設(shè)備封裝： 304-PBGA（31x31）
包裝： 管件
安裝類型： 表面貼裝
PI7C8154B
ASYNCHRONOUS 2-PORT
PCI-to-PCI BRIDGE
Advance Information
Page 60 of 114
JUNE 2008 REVISION 1.1
Secondary
Detected Parity
Detected Bit
Transaction Type
Direction
Bus Where Error
Was Detected
Primary / Secondary Parity
Error Response Bits
0
Posted Write
Upstream
Primary
x / x
0
Posted Write
Upstream
Secondary
x / x
0
Delayed Write
Downstream
Primary
x / x
1
Delayed Write
Downstream
Secondary
x / 1
0
Delayed Write
Upstream
Primary
x / x
0
Delayed Write
Upstream
Secondary
x / x
Note: x=don’t care
Table 5-5 shows assertion of P_PERR#. This signal is set under the following conditions:
PI7C8154B is either the target of a write transaction or the initiator of a read transaction on the
primary bus.
The parity-error-response bit must be set in the command register of primary interface.
PI7C8154B detects a data parity error on the primary bus or detects S_PERR# asserted during
the completion phase of a downstream delayed write transaction on the target (secondary) bus.
Table 5-5 ASSERTION OF P_PERR#
P_PERR#
Transaction Type
Direction
Bus Where Error
Was Detected
Primary/ Secondary Parity
Error Response Bits
1 (de-asserted)
Read
Downstream
Primary
x / x
1
Read
Downstream
Secondary
x / x
0 (asserted)
Read
Upstream
Primary
1 / x
1
Read
Upstream
Secondary
x / x
0
Posted Write
Downstream
Primary
1 / x
1
Posted Write
Downstream
Secondary
x / x
1
Posted Write
Upstream
Primary
x / x
1
Posted Write
Upstream
Secondary
x / x
0
Delayed Write
Downstream
Primary
1 / x
02
Delayed Write
Downstream
Secondary
1 / 1
1
Delayed Write
Upstream
Primary
x / x
1
Delayed Write
Upstream
Secondary
x / x
Notes: x=don’t care
2
=The parity error was detected on the target (secondary) bus but not on the initiator (primary) bus.
Table 5-6 shows assertion of S_PERR# that is set under the following conditions:
PI7C8154B is either the target of a write transaction or the initiator of a read transaction on the
secondary bus.
The parity error response bit must be set in the bridge control register of secondary interface.
PI7C8154B detects a data parity error on the secondary bus or detects P_PERR# asserted
during the completion phase of an upstream delayed write transaction on the target (primary)
bus.
Table 5-6 ASSERTION OF S_PERR#
S_PERR#
Transaction Type
Direction
Bus Where Error
Was Detected
Primary/ Secondary Parity
Error Response Bits
1 (de-asserted)
Read
Downstream
Primary
x / x
0 (asserted)
Read
Downstream
Secondary
x / 1
1
Read
Upstream
Primary
x / x
1
Read
Upstream
Secondary
x / x
1
Posted Write
Downstream
Primary
x / x
1
Posted Write
Downstream
Secondary
x / x
1
Posted Write
Upstream
Primary
x / x
0
Posted Write
Upstream
Secondary
x / 1
1
Delayed Write
Downstream
Primary
x / x
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