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參數(shù)資料
| 型號(hào)： | PI7C7100BNA |
| 英文描述： | PCI Bus Interface/Controller |
| 中文描述： | PCI總線接口/控制器 |
| 文件頁數(shù)： | 75/118頁 |
| 文件大?。?/td> | 2962K |
| 代理商： | PI7C7100BNA |
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14. Bridge Behavior
PI7C7100
ADVANCE INFORMATION
A target then has up to three cycles to respond before subtractive decoding is initiated. If the target detects an address
hit, it should assert its DEVSEL# signal in the cycle corresponding to the values of bits 9 and 10 in the Configuration Status
Register.
Termination of a PCI cycle can occur in a number of ways. Normal termination begins by the initiator (master)
de-asserting FRAME# with IRDY# being asserted (or remaining asserted) on the same cycle. The cycle
completes when TRDY# and IRDY# are both asserted simultaneously. The target should de-assert TRDY# for
one cycle following final assertion (sustained 3-state signal).
14.2 Transaction Ordering
To maintain data coherency and consistency, PI7C7100 complies with the ordering rules put forth in the PCI Local Bus
Specification, Rev 2.1. The following table summarizes the ordering relationship of all the transactions through the bridge.
PMW - Posted write (either memory write or memory write & invalidate)
DRR - Delayed read request (all memory read, I/O read & configuration read)
DWR - Delayed write request (I/O write & configuration write)
DRC - Delayed read completion (all memory read, I/O read & configuration read)
DWC - Delayed write completion (I/O write & configuration write )
A PCI cycle is initiated by asserting the FRAME# signal. In a bridge, there are a number of possibilities.
Those possibilities are summarized in the table below:
14.1 Bridge Actions for Various Cycle Types
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PI7C7100 | 3-Port PCI Bridge |
| PI7C7100CNA | 3-Port PCI Bridge |
| PI7C7300 | 3-PORT PCI-to-PCI BRIDGE |
| PI7C7300A | 3-PORT PCI-to-PCI BRIDGE |
| PI7C7300ANA | 3-PORT PCI-to-PCI BRIDGE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI7C7100CNA | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3-Port PCI Bridge |
| PI7C7300 | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3-PORT PCI-to-PCI BRIDGE |
| PI7C7300A | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3-PORT PCI-to-PCI BRIDGE |
| PI7C7300AEVB-3 | 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(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| PI7C7300ANA | 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 |
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