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參數資料
| 型號： | PI7C8150ND |
| 廠商： | Pericom Semiconductor Corp. |
| 英文描述： | 2-Port PCI-to-PCI Bridge |
| 中文描述： | 2端口PCI至PCI橋 |
| 文件頁數： | 33/106頁 |
| 文件大小： | 904K |
| 代理商： | PI7C8150ND |
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PI7C8150
2-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
23
August 22, 2002 – Revision 1.02
When PI7C8150 initiates the transaction on the target interface, the bus command is
changed from configuration write to special cycle. The address and data are for-warded
unchanged. Devices that use special cycles ignore the address and decode only the bus
command. The data phase contains the special cycle message. The transaction is
forwarded as a delayed transaction, but in this case the target response is not forwarded
back (because special cycles result in a master abort). Once the transaction is completed on
the target bus, through detection of the master abort condition, PI7C8150 responds with
TRDY_L to the next attempt of the con-figuration transaction from the initiator. If more
than one data transfer is requested, PI7C8150 responds with a target disconnect operation
during the first data phase.
3.8
TRANSACTION TERMINATION
This section describes how PI7C8150 returns transaction termination conditions back to the
initiator.
The initiator can terminate transactions with one of the following types of termination:
Normal termination
Normal termination occurs when the initiator de-asserts FRAME# at the beginning of the
last data phase, and de-asserts IRDY# at the end of the last data phase in conjunction with
either TRDY_L or STOP_L assertion from the target.
Master abort
A master abort occurs when no target response is detected. When the initiator does not
detect a DEVSEL_L from the target within five clock cycles after asserting FRAME_L, the
initiator terminates the transaction with a master abort. If FRAME_L is still asserted, the
initiator de-asserts FRAME_L on the next cycle, and then de-asserts IRDY_L on the
following cycle. IRDY_L must be asserted in the same cycle in which FRAME_L de-
asserts. If FRAME_L is already de-asserted, IRDY_L can be de-asserted on the next clock
cycle following detection of the master abort condition.
The target can terminate transactions with one of the following types of termination:
Normal termination
TRDY_L and DEVSEL_L asserted in conjunction with FRAME_L de-asserted and
IRDY_L asserted.
Target retry
STOP_L and DEVSEL_L asserted with TRDY_L de-asserted during the first data phase.
No data transfers occur during the transaction. This transaction must be repeated.
Target disconnect with data transfer
STOP_L, DEVSEL_L and TRDY_L asserted. It signals that this is the last data transfer of
the transaction.
Target disconnect without data transfer
STOP_L and DEVSEL_L asserted with TRDY_L de-asserted after previous data transfers
have been made. Indicates that no more data transfers will be made during this transaction.
Target abort
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PI7C8150ND-33 | 制造商:Pericom Semiconductor Corporation 功能描述:PCI-to-PCI Bridge 256-Pin BGA 制造商:Pericom Semiconductor Corporation 功能描述:PCI to PCI Bridge 256-Pin BGA 制造商:Pericom Semiconductor Corporation 功能描述:PCI BUS CONTROLLER, PBGA256 |
| PI7C8152 | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:ENHANCED 2- PORT TO PCI BRIDGE INTEL 21152 COMPORISON |
| PI7C8152A | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:2-Port PCI-to-PCI Bridge |
| PI7C8152A_07 | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:2-Port PCI-to-PCI Bridge |
| PI7C8152AMA | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:2-Port PCI-to-PCI Bridge |
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