參數(shù)資料
型號(hào)： PI7C7300ANAE
廠商： Pericom
文件頁(yè)數(shù)： 35/109頁(yè)
文件大小： 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 31 OF 109
09/25/03 Revision 1.09
!
The bus command is a configuration read or configuration write transaction.
!
Lowest two address bits P_AD[1:0] must be 00b.
!
Signal P_IDSEL must be asserted.
Function code is either 0 for configuration space of S1, or 1 for configuration space of S2
as PI7C7300A is a multi-function device.
PI7C7300A limits all configuration access to a single DWORD data transfer and returns
target-disconnect with the first data transfer if additional data phases are requested.
Because read transactions to configuration space do not have side effects, all bytes in the
requested DWORD are returned, regardless of the value of the byte enable bits.
Type 0 configuration write and read transactions do not use data buffers; that is, these
transactions are completed immediately, regardless of the state of the data buffers. The
PI7C7300A ignores all Type 0 transactions initiated on the secondary interface.
4.8.2
TYPE 1 TO TYPE 0 CONVERSION
Type 1 configuration transactions are used specifically for device configuration in a
hierarchical PCI bus system. A PCI-to-PCI bridge is the only type of device that should
respond to a Type 1 configuration command. Type 1 configuration commands are used
when the configuration access is intended for a PCI device that resides on a PCI bus
other than the one where the Type 1 transaction is generated.
PI7C7300A performs a Type 1 to Type 0 translation when the Type 1 transaction is
generated on the primary bus and is intended for a device attached directly to the
secondary bus. PI7C7300A must convert the configuration command to a Type 0 format
so that the secondary bus device can respond to it. Type 1 to Type 0 translations are
performed only in the downstream direction; that is, PI7C7300A generates a Type 0
transaction only on the secondary bus, and never on the primary bus.
PI7C7300A responds to a Type 1 configuration transaction and translates it into a Type 0
transaction on the secondary bus when the following conditions are met during the
address phase:
!
The lowest two address bits on P_AD[1:0] are 01b.
!
The bus number in address field P_AD[23:16] is equal to the value in the secondary
bus number register in configuration space.
!
The bus command on P_CBE[3:0] is a configuration read or configuration write
transaction.
When PI7C7300A translates the Type 1 transaction to a Type 0 transaction on the
secondary interface, it performs the following translations to the address:
!
Sets the lowest two address bits on S1_AD[1:0] or S2_AD[1:0] to 00b.
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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(dòng)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(kāi)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(píng)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(kāi)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(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
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