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參數(shù)資料
| 型號(hào)： | PI7C9X20303ULAZPE |
| 廠商： | Pericom |
| 文件頁數(shù)： | 14/77頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PCIE PACKET SWITCH 132TQFN |
| 標(biāo)準(zhǔn)包裝： | 168 |
| 系列： | UltraLo™ |
| 應(yīng)用： | 封裝開關(guān)，3 端口/3 線道 |
| 接口： | PCI Express |
| 封裝/外殼： | 132-VFQFN 雙排裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 132-TQFN-EP（10x10） |
| 包裝： | 托盤 |
| 安裝類型： | 表面貼裝 |
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PI7C9X20303UL
3Port-3Lane PCI Express Switch
UltraLo
TM Family
Datasheet
Page 21 of 77
August 2009 – Revision 1.1
Pericom Semiconductor
5.9
FLOW CONTROL
PCI Express employs Credit-Based Flow Control mechanism to make buffer utilization more efficient. The
transaction layer transmitter ensures that it does not transmit a TLP to an opposite receiver unless the receiver has
enough buffer space to accept the TLP. The transaction layer receiver has the responsibility to advertise the free
buffer space to an opposite transmitter to avoid packet stale. In this switch, each port has separate queues for
different traffic types and the credits are on the fly sent to data link layer, which compares the current available
credits with the monitored one and reports the updated credit to the counterpart. If no new credit is acquired, the
credit reported is scheduled for every 30 us to prevent from link entering retrain. On the other hand, the receiver at
each egress port gets the usable credits from the opposite end in a link. It would broadcast them to all the other
ingress ports for gating the packet transmission.
5.10 TRANSATION LAYER TRANSMIT BLOCK (TLP ENCAPSULATION)
The transmit portion of transaction layer performs the following functions. They are to construct the all types of
forwarded TLP generated from VC arbiter, respond with the completion packet when the local resource (i.e.
configuration register) is accessed and regenerate the message that terminated at receiver to RC if acts as an
upstream port.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI7C9X20303ULAZPEX | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 3port 3lane PCIe Packet Switch 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 |
| PI7C9X20404GPANBE | 制造商:Pericom Semiconductor Corporation 功能描述:4PORT 4LANE PCIE PACKETSWITCH - Trays |
| PI7C9X20404GPBNBE | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 4port 4lane PCIe PacketSwitch 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 |
| PI7C9X20404SLCEVB | 制造商:Pericom Semiconductor Corporation 功能描述:PCIE 4 PORT SWITCH EVAL BOARD - Boxed Product (Development Kits) |
| PI7C9X20404SLCFDE | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 4port 4lane PCIe Packet Switch 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 |
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