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参数资料
| 型号： | PI7C8154BNAE |
| 厂商： | Pericom |
| 文件页数： | 52/114页 |
| 文件大小： | 0K |
| 描述： | IC PCI-PCI BRIDGE ASYNC 304-PBGA |
| 标准包装： | 27 |
| 系列： | * |
| 应用： | * |
| 接口： | * |
| 电源电压： | * |
| 封装/外壳： | 304-BBGA |
| 供应商设备封装： | 304-PBGA（31x31） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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PI7C8154B
ASYNCHRONOUS 2-PORT
PCI-to-PCI BRIDGE
Advance Information
Page 42 of 114
JUNE 2008 REVISION 1.1
2-9 shows the response to each type of target termination that occurs during a delayed read
transaction.
PI7C8154B repeats a delayed read transaction until one of the following conditions is met:
PI7C8154B completes at least one data transfer.
PI7C8154B receives a master abort.
PI7C8154B receives a target abort.
PI7C8154B makes 224 (default) read attempts resulting in a response of target retry.
Table 2-9 RESPONSE TO DELAYED READ TARGET TERMINATION
Target Termination
Response
Normal
If prefetchable, target disconnect only if initiator requests more data than read
from target. If non-prefetchable, target disconnect on first data phase.
Target Retry
Re-initiate read transaction to target
Target Disconnect
If initiator requests more data than read from target, return target disconnect to
initiator.
Target Abort
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.
After PI7C8154B makes 224(default) attempts of the same delayed read transaction on the target
bus, PI7C8154B asserts P_SERR# if the primary SERR# 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# event disable register (offset 64h). PI7C8154B will report
system error. See Section 5.4 for a description of system error conditions.
2.11.4
TARGET TERMINATION INITIATED BY PI7C8154B
PI7C8154B 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.
2.11.4.1
TARGET RETRY
PI7C8154B returns a target retry to the initiator when it cannot accept write data or return read data
as a result of internal conditions. PI7C8154B 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 PI7C8154B, 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PI7C8154BNAE-80 | 功能描述:外围驱动器与原件 - PCI 64B/66MHz 2 Port PCI Bridge RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| PI7C8154BNAI | 制造商:Pericom Semiconductor Corporation 功能描述: |
| PI7C8154BNAIE | 功能描述:外围驱动器与原件 - PCI 64B/66MHz 2 Port PCI Bridge RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| PI7C8154EVB | 功能描述:界面开发工具 64B/66MHz 2 Port PCI Bridge Eval Brd RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| PI7C8154NA-33 | 制造商:PERICOM 功能描述: |
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