參數(shù)資料
型號： PI7C7300DNAE
廠商： Pericom
文件頁數(shù)： 46/107頁
文件大小： 0K
描述： IC PCI-PCI BRIDGE 3PORT 272-BGA
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
PI7C7300D
3-PORT PCI-TO-PCI BRIDGE
Page 43 of 107
Pericom Semiconductor
November 2005 - Revision 1.01
5.1
ADDRESS RANGES
PI7C7300D uses the following address ranges that determine which I/O and memory
transactions are forwarded from the primary PCI bus to the secondary PCI bus, and from
the secondary bus to the primary bus:
Two 32-bit I/O address ranges
Two 32-bit memory-mapped I/O (non-prefetchable memory) ranges
Two 32-bit prefetchable memory address ranges
Transactions falling within these ranges are forwarded downstream from the primary PCI
bus to the two secondary PCI buses. Transactions falling outside these ranges are
forwarded upstream from the two secondary PCI buses to the primary PCI bus.
No address translation is required in PI7C7300D. The addresses that are not marked for
downstream are always forwarded upstream. However, if an address of a transaction
initiated from S1 bus is located in the marked address range for down-stream in S2 bus
and not in the marked address range for downstream in S1 bus, the transaction will be
forwarded to S2 bus instead of primary bus. By the same token, if an address of a
transaction initiated from S2 bus is located in the marked address range for downstream
in S1 bus and not in the marked address range for downstream in S2 bus, the transaction
will be forwarded to S1 bus instead of primary bus.
5.2
I/O ADDRESS DECODING
PI7C7300D uses the following mechanisms that are defined in the configuration space to
specify the I/O address space for downstream and upstream forwarding:
I/O base and limit address registers
The ISA enable bit
The VGA mode bit
The VGA snoop bit
This section provides information on the I/O address registers and ISA mode. Section
5.4 provides information on the VGA modes.
To enable downstream forwarding of I/O transactions, the I/O enable bit must be set in
the command register in configuration space. All I/O transactions initiated on the primary
bus will be ignored if the I/O enable bit is not set. To enable upstream forwarding of I/O
transactions, the master enable bit must be set in the command register. If the master-
enable bit is not set, PI7C7300D ignores all I/O and memory transactions initiated on the
secondary bus.
The master-enable bit also allows upstream forwarding of memory transactions
if it is set.
CAUTION
If any configuration state affecting I/O transaction forwarding is changed by a
configuration write operation on the primary bus at the same time that I/O
相關(guān)PDF資料
PDF描述
PI7C8140AMAE IC PCI-PCI BRIDGE 2PORT 128-QFP
PI7C8150ANDE IC PCI-PCI BRIDGE 2PORT 256-PBGA
PI7C8150BNDIE IC PCI-PCI BRIDGE ASYNC 256-PBGA
PI7C8152BMAIE IC PCI-PCI BRIDGE 2PORT 160-MQFP
PI7C8154ANAE IC PCI-PCI BRIDGE ASYNC 304-PBGA
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
PI7C8140AMA 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:2-Port PCI-to-PCI Bridge
PI7C8140AMAE 功能描述:外圍驅(qū)動器與原件 - PCI PCI -to -PCI Bridge 2 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*