參數(shù)資料
型號(hào)： PI7C8140AMAE
廠商： Pericom
文件頁數(shù)： 65/82頁
文件大?。?/td> 0K
描述： IC PCI-PCI BRIDGE 2PORT 128-QFP
標(biāo)準(zhǔn)包裝： 39
系列： *
應(yīng)用： *
接口： *
電源電壓： *
封裝/外殼： 128-BFQFP
供應(yīng)商設(shè)備封裝： 128-QFP（14x20）
包裝： 管件
安裝類型： 表面貼裝
PI7C8140A
2-PORT PCI-TO-PCI BRIDGE
Page 68 of 82
March 20, 2007 – Revision 1.01
Bit
Function
Type
Description
24
Primary Master
Timeout
R/W
Determines the maximum number of PCI clock cycles the bridge waits for an
initiator on the primary interface to repeat a delayed transaction request.
0: Primary discard timer counts 2
15 PCI clock cycles.
1: Primary discard timer counts 2
10 PCI clock cycles.
Reset to 0
25
Secondary
Master Timeout
RW
Determines the maximum number of PCI clock cycles the bridge waits for an
initiator on the secondary interface to repeat a delayed transaction request.
0: Secondary discard timer counts 2
15 PCI clock cycles.
1: Secondary discard timer counts 2
10 PCI clock cycles.
Reset to 0
26
Master Timeout
Status
RWC
This bit is set to 1 when either the primary master timeout counter or secondary
master timeout counter expires.
Reset to 0
27
Discard Timer
P_SERR#
enable
RW
This bit is set to 1 and P_SERR# is asserted when either the primary discard timer
or the secondary discard timer expire.
0: P_SERR# is not asserted on the primary interface as a result of the expiration
of either the Primary Discard Timer or the Secondary Discard Timer.
1: P_SERR# is asserted on the primary interface as a result of the expiration of
either the Primary Discard Timer or the Secondary Discard Timer.
Reset to 0
31-28
Reserved
RO
Reserved. Returns 0 when read. Reset to 0.
13.2.29 SUBSYSTEM VENDOR ID REGISTER – OFFSET 40h
Bit
Function
Type
Description
15:0
Subsystem
Vendor ID
RW
Subsystem Vendor ID for add-in card manufacturers.
Reset to 0
13.2.30 SUBSYSTEM ID REGISTER – OFFSET 40h
Bit
Function
Type
Description
31:16
Subsystem ID
RW
Subsystem ID for add-in card manufacturers.
Reset to 0
13.2.31 DIAGNOSTIC/CHIP CONTROL REGISTER – OFFSET 44h
Bit
Function
Type
Description
0
Reserved
RO
Reserved. Returns 0 when read. Reset to 0
07-0067
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