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參數(shù)資料
| 型號： | PI7C7300 |
| 廠商： | Pericom Semiconductor Corp. |
| 英文描述： | 3-PORT PCI-to-PCI BRIDGE |
| 中文描述： | 3端口PCI至PCI橋 |
| 文件頁數(shù)： | 53/109頁 |
| 文件大?。?/td> | 779K |
| 代理商： | PI7C7300 |
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PI7C7300A
3-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
Page 53 OF 109
09/25/03 Revision 1.09
to the initiator. When PI7C7300A detects a parity error on the write data for the initial
delayed write request transaction, the following events occur:
!
If the parity-error-response bit corresponding to the initiator bus is set, PI7C7300A
asserts TRDY# to the initiator and the transaction is not queued. If multiple data
phases are requested, STOP# is also asserted to cause a target disconnect. Two
cycles after the data transfer, PI7C7300A also asserts PERR#.
If the parity-error-response bit is not set, PI7C7300A returns a target retry. It queues
the transaction as usual. PI7C7300A does not assert PERR#. In this case, the
initiator repeats the transaction.
!
PI7C7300A sets the detected-parity-error bit in the status register corresponding to
the initiator bus, regardless of the state of the parity-error-response bit.
Note:
If parity checking is turned off and data parity errors have occurred for queued or
subsequent delayed write transactions on the initiator bus, it is possible that the initiator’s
re-attempts of the write transaction may not match the original queued delayed write
information contained in the delayed transaction queue. In this case, a master timeout
condition may occur, possibly resulting in a system error (P_SERR# assertion).
For downstream transactions, when PI7C7300A is delivering data to the target on the
secondary bus and S_PERR# is asserted by the target, the following events occur:
!
PI7C7300A sets the secondary interface data parity detected bit in the secondary
status register, if the secondary parity error response bit is set in the bridge control
register.
!
PI7C7300A captures the parity error condition to forward it back to the initiator on
the primary bus.
Similarly, for upstream transactions, when PI7C7300A is delivering data to the target on
the primary bus and P_PERR# is asserted by the target, the following events occur:
!
PI7C7300A sets the primary interface data-parity-detected bit in the status register, if
the primary parity-error-response bit is set in the command register.
!
PI7C7300A captures the parity error condition to forward it back to the initiator on
the secondary bus.
A delayed write transaction is completed on the initiator bus when the initiator repeats
the write transaction with the same address, command, data, and byte enable bits as the
delayed write command that is at the head of the posted data queue. Note that the parity
bit is not compared when determining whether the transaction matches those in the
delayed transaction queues.
Two cases must be considered:
!
When parity error is detected on the initiator bus on a subsequent re-attempt of the
transaction and was not detected on the target bus
!
When parity error is forwarded back from the target bus
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PI7C7300A | 3-PORT PCI-to-PCI BRIDGE |
| PI7C7300ANA | 3-PORT PCI-to-PCI BRIDGE |
| PI7C8140A | 2 PORT PCI TO PCI BRIDGE PLX PCI 6140 COMPARISON |
| PI7C8148B | 2-PORT PCI-to-PCI BRIDGE PLX PC16152 COMPARISON |
| PI7C8150B-33 | PCI Bridge | Asynchronous 2-Port PCI Bridge |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| PI7C7300ANAE | 功能描述:外圍驅(qū)動器與原件 - PCI 3 Port PCI Bridge 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 |
| 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 |
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