參數(shù)資料
型號： PI7C7300ANAE
廠商： Pericom
文件頁數(shù)： 37/109頁
文件大?。?/td> 0K
描述： IC PCI-PCI BRIDGE 3PORT 272-BGA
產(chǎn)品變化通告： Product Discontinuation 09/Dec/2010
標(biāo)準(zhǔn)包裝： 40
系列： *
應(yīng)用： *
接口： *
電源電壓： *
封裝/外殼： 272-BBGA
供應(yīng)商設(shè)備封裝： 272-PBGA（27x27）
包裝： 管件
安裝類型： 表面貼裝
PI7C7300A
3-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
Page 33 OF 109
09/25/03 Revision 1.09
When PI7C7300A detects a Type 1 configuration transaction intended for a PCI bus
downstream from the secondary bus, PI7C7300A forwards the transaction unchanged to
the secondary bus. Ultimately, this transaction is translated to a Type 0 configuration
command or to a special cycle transaction by a downstream PCI-to-PCI bridge.
Downstream Type 1 to Type 1 forwarding occurs when the following conditions are met
during the address phase:
!
The lowest two address bits are equal to 01b.
!
The bus number falls in the range defined by the lower limit (exclusive) in the
secondary bus number register and the upper limit (inclusive) in the subordinate bus
number register.
!
The bus command is a configuration read or write transaction.
PI7C7300A also supports Type 1 to Type 1 forwarding of configuration write
transactions upstream to support upstream special cycle generation. A Type 1
configuration command is forwarded upstream when the following conditions are met:
!
The lowest two address bits are equal to 01b.
!
The bus number falls outside the range defined by the lower limit (inclusive)
in the secondary bus number register and the upper limit (inclusive) in the
subordinate bus number register.
!
The device number in address bits AD[15:11] is equal to 11111b.
!
The function number in address bits AD[10:8] is equal to 111b.
!
The bus command is a configuration write transaction.
The PI7C7300A forwards Type 1 to Type 1 configuration write transactions as delayed
transactions. Type 1 to Type 1 configuration write transactions are limited to a single
data transfer.
4.8.4
SPECIAL CYCLES
The Type 1 configuration mechanism is used to generate special cycle transactions in
hierarchical PCI systems. Special cycle transactions are ignored by acting as a target and
are not forwarded across the bridge. Special cycle transactions can be generated from
Type 1 configuration write transactions in either the upstream or the down-stream
direction.
PI7C7300A initiates a special cycle on the target bus when a Type 1 configuration write
transaction is being detected on the initiating bus and the following conditions are met
during the address phase:
!
The lowest two address bits on AD[1:0] are equal to 01b.
!
The device number in address bits AD[15:11] is equal to 11111b.
!
The function number in address bits AD[10:8] is equal to 111b.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PI7C7300ANA-E 制造商:Pericom Semiconductor Corporation 功能描述:PCI-to-PCI Bridge 272-Pin BGA 制造商:Pericom Semiconductor Corporation 功能描述:PCI to PCI Bridge 272-Pin BGA
PI7C7300DNAE 功能描述:外圍驅(qū)動器與原件 - PCI PCI -to -PCI Bridge 3 Port RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
PI7C7300EVB 功能描述:界面開發(fā)工具 3 Port PCI Bridge Eval Brd RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
PI7C8140A 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:2 PORT PCI TO PCI BRIDGE PLX PCI 6140 COMPARISON
PI7C8140AEVB 功能描述:界面開發(fā)工具 2 Port PCI to PCI Bridge Eval Brd RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
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