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參數(shù)資料
| 型號(hào)： | PI7C9X20505GPBNDE |
| 廠商： | Pericom |
| 文件頁數(shù)： | 11/81頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PCIE PACKET SWITCH 256BGA |
| 產(chǎn)品變化通告： | Copper Wire Change 26/Sept/2011 |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 系列： | GreenPacket™ |
| 應(yīng)用： | 封裝開關(guān)，5 端口/5 線道 |
| 接口： | PCI Express |
| 封裝/外殼： | 256-BGA |
| 供應(yīng)商設(shè)備封裝： | 256-PBGA（17x17） |
| 包裝： | 托盤 |
| 安裝類型： | 表面貼裝 |
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PI7C9X20505GP
5Port-5Lane PCI Express Switch
GreenPacket
TM Family
Datasheet
Page 19 of 81
June 2009 – Revision 1.5
Pericom Semiconductor
DTX [3:0]
ACTUAL CURRENT / NOMINAL CURRENT
0111
1.35
1000
0.60
1001
0.65
1010
0.70
1011
0.75
1100
0.80
1101
0.85
1110
0.90
1111
0.95
The equalization function of transmitting channels can optimize the driver current for different back-plane lengths
and materials. The table shown below lists the combinations of de-emphasized driver current (ITX –IEQ) to
non-de-emphasized driver current (ITX) for different values of DEQ [3:0].
Table 5-3 De-emphasis Level versus DEQ [3:0]
DEQ
[3:0]
(ITX –IEQ) / ITX
De-emphasis (dB)
0000
1.00
0.00
0001
0.96
-0.35
0010
0.92
-0.72
0011
0.88
-1.11
0100
0.84
-1.51
0101
0.80
-1.94
0110
0.76
-2.38
0111
0.72
-2.85
1000
0.68
-3.35
1001
0.64
-3.88
1010
0.60
-4.44
1011
0.56
-5.04
1100
0.52
-5.68
1101
0.48
-6.38
1110
0.44
-7.13
1111
0.40
-7.96
By default, the DEQ is set to “1000” to conform to the PCI Express 1.0a specification, which calls for a
de-emphasis level of between –3 dB and –4 dB.
In order to improve the data stream integrity across the channels, the receiver of each port of the Switch includes a
reception equalizer to mitigate the effects of ISI. The reception equalizer is implemented as a selectable high-pass
filter at the input node, and it is capable of removing as much as 0.4UI of ISI related jitter. The following table
shows a simple guideline for selecting the appropriate value to adapt with different lengths or connector numbers in
various applications.
Table 5-4 Rx Equalizer Settings (RXEQCTL)
RXEQCTL [1]
RXEQCTL [0]
Rx Eq Setting
Input Jitter
Channel Length
0
Max Rx Eq
> 0.25 UI
> 20" and two or more
connectors
0
1
Min Rx Eq
Between 0.1 UI
and 0.25 UI
Between 8'' and 20" and up to
two connectors
1
X
< 0.1 UI
8" or less, up to one connector
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI7C9X20508GPANDE | 制造商:Pericom Semiconductor Corporation 功能描述:5-PORT, 8-LANE, GREENPACKET- PCIE PACKET SWITCH - Rail/Tube |
| PI7C9X20508GPBEVB | 制造商:Pericom Semiconductor Corporation 功能描述:EVAL BOARD - Boxed Product (Development Kits) |
| PI7C9X20508GPBNDE | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 5port 8lane 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 |
| PI7C9X20508GPNDE | 制造商:Pericom Semiconductor Corporation 功能描述:5-PORT, 8-LANE, GREENPACKET- PCIE PACKET SWITCH - Trays |
| PI7C9X2G303ELAEVB | 制造商:Pericom Semiconductor Corporation 功能描述:Switch IC Development Tools Eval Kit for PI7C9X2G303ELA |
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