參數(shù)資料
型號： PI7C8150B-33
英文描述： PCI Bridge | Asynchronous 2-Port PCI Bridge
中文描述： PCI橋|異步2端口PCI橋
文件頁數(shù)： 41/115頁
文件大?。?/td> 879K
代理商： PI7C8150B-33
PI7C8150B
2-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
Page 41 of 115
July 31, 2003 – Revision 1.031
Table 3-9. Response to Delayed Read Target Termination
Target Termination
Normal
Response
If prefetchable, target disconnect only if initiator requests more data than read
from target. If non-prefetchable, target disconnect on first data phase.
Re-initiate read transaction to target
If initiator requests more data than read from target, return target disconnect to
initiator.
Return target abort to initiator. Set received target abort bit in the target
interface status register. Set signaled target abort bit in the initiator interface
status register.
Target Retry
Target Disconnect
Target Abort
After PI7C8150B makes 2
24
(default) attempts of the same delayed read transaction on the
target bus, PI7C8150B asserts P_SERR_L if the primary SERR_L enable bit is set (bit 8 of
command register for secondary bus) and the delayed-write-non-delivery bit is not set. The
delayed-write-non-delivery bit is bit 5 of P_SERR_L event disable register (offset 64h).
PI7C8150B will report system error. See Section 6.4 for a description of system error
conditions.
3.8.4
TARGET TERMINATION INITIATED BY PI7C8150B
PI7C8150B can return a target retry, target disconnect, or target abort to an initiator for
reasons other than detection of that condition at the target interface.
3.8.4.1
TARGET RETRY
PI7C8150B returns a target retry to the initiator when it cannot accept write data or return
read data as a result of internal conditions. PI7C8150B returns a target retry to an initiator
when any of the following conditions is met:
For delayed write transactions:
!
The transaction is being entered into the delayed transaction queue.
!
Transaction has already been entered into delayed transaction queue, but target
response has not yet been received.
!
Target response has been received but has not progressed to the head of the return
queue.
!
The delayed transaction queue is full, and the transaction cannot be queued.
!
A transaction with the same address and command has been queued.
!
A locked sequence is being propagated across PI7C8150B, and the write transaction is
not a locked transaction.
!
The target bus is locked and the write transaction is a locked transaction.
!
Use more than 16 clocks to accept this transaction.
For delayed read transactions:
!
The transaction is being entered into the delayed transaction queue.
相關(guān)PDF資料
PDF描述
PI7C8152B PCI Bridge | Asynchronous 2-Port PCI Bridge
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PI7C8150BEVB 功能描述:界面開發(fā)工具 2 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
PI7C8150BMA 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:ASYNCHRONOUS 2-PORT PCI-TO-PCI BRIDGE
PI7C8150BMA-33 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:ASYNCHRONOUS 2-PORT PCI-TO-PCI BRIDGE
PI7C8150BMAE 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 32-Bit 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
PI7C8150BMAI 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:ASYNCHRONOUS 2-PORT PCI-TO-PCI BRIDGE
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