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參數(shù)資料
| 型號： | PI7C7300ANA |
| 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)： | 48/109頁 |
| 文件大?。?/td> | 779K |
| 代理商： | PI7C7300ANA |
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PI7C7300A
3-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
Page 48 OF 109
09/25/03 Revision 1.09
!
The ordering relationship of a transaction with respect to other transactions is
determined when the transaction completes, that is, when a transaction ends with a
termination other than target retry.
!
Requests terminated with target retry can be accepted and completed in any order
with respect to other transactions that have been terminated with target retry. If the
order of completion of delayed requests is important, the initiator should not start a
second delayed transaction until the first one has been completed. If more than one
delayed transaction is initiated, the initiator should repeat all delayed transaction
requests, using some fairness algorithm. Repeating a delayed transaction cannot be
contingent on completion of another delayed transaction. Otherwise, a deadlock can
occur.
!
Write transactions flowing in one direction have no ordering requirements with
respect to write transactions flowing in the other direction. PI7C7300A can accept
posted write transactions on both interfaces at the same time, as well as initiate
posted write transactions on both interfaces at the same time.
!
The acceptance of a posted memory write transaction as a target can never be
contingent on the completion of a non-locked, non-posted transaction as a master.
This is true for PI7C7300A and must also be true for other bus agents. Otherwise, a
deadlock can occur.
!
PI7C7300A accepts posted write transactions, regardless of the state of completion
of any delayed transactions being forwarded across PI7C7300A.
6.3
ORDERING RULES
Table 6-1 shows the ordering relationships of all the transactions and refers by number to
the ordering rules that follow.
Table 6-1 SUMMARY OF TRANSACTION ORDERING
Pass
Posted
Write
Delayed
Read
Request
Yes
5
No
No
Yes
Delayed
Write
Request
Yes
5
No
No
Yes
Delayed Read
Completion
Delayed Write
Completion
Posted Write
Delayed Read Request
Delayed Write Request
Delayed
Completion
Delayed
Completion
No
1
No
2
No
4
No
3
Yes
5
Yes
Yes
No
Yes
5
Yes
Yes
No
Read
Write
Yes
Yes
Yes
No
No
Note:
The superscript accompanying some of the table entries refers to any applicable
ordering rule listed in this section. Many entries are not governed by
these ordering rules; therefore, the implementation can choose whether or not the
transactions pass each other. The entries without superscripts reflect the PI7C7300A’s
implementation choices.
The following ordering rules describe the transaction relationships. Each ordering rule is
followed by an explanation, and the ordering rules are referred to by number in Table
6-1. These ordering rules apply to posted write transactions, delayed write and read
requests, and delayed write and read completion transactions crossing PI7C7300A in the
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| PI7C8152B | PCI Bridge | Asynchronous 2-Port PCI Bridge |
| PI7C8154 | PCI Bridge | 2-Port PCI-to-PCI Bridge |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| PI7C7300DNAE | 功能描述:外圍驅(qū)動器與原件 - PCI PCI -to -PCI Bridge 3 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 |
| 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 |
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