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參數(shù)資料
| 型號： | XRT59L91 |
| 廠商： | Exar Corporation |
| 英文描述： | Single-Chip E1 Line Interface Unit(單片E1 線接口單元) |
| 中文描述： | 單芯片E1線路接口單元（單片素E1線接口單元） |
| 文件頁數(shù)： | 19/28頁 |
| 文件大?。?/td> | 292K |
| 代理商： | XRT59L91 |
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XRT59L91
19
Rev. P2.00
Preliminary
The user can configure the XRT59L91 device to oper-
ate in the “Local Loop-back” Mode, by pulling the
“LLoop” input pin (pin 4) to VDD.
3.2
The Remote Loop Back Mode
When the XRT59L91 device is configured to operate in
the “Remote Loop-back” Mode, the XRT59L91 device
will ignore any signals that are input to the TxPOS and
TxNEG input pins. The XRT59L91 device will receive
the incoming line signals, via the RTIP and RRing input
pins. This data will be processed through the entire
Receive Section (within the XRT59L91) and will output
to the “Receive Terminal Equipment” via the
Remote Loop Back
Path
Interface
Transmit Input
Circuit
Pulse Shaping
Equalizer
Receive
Slicer
Peak Detector/
Interface
Receive Output
LOS
Detector
MUX
Local
Loop Back
Loop Back
MUX
Remote
TTIP
TRing
TxPOS
TxNEG
RTIP
RRing
RLoop
LLoop
RxPOS
RxNEG
RxLOS
TxClk
“RxPOS” and “RxNEG” output pins. Additionally, this
data will also be internally looped back to the “Transmit
Input Interface” block within the “Transmit Section”. At
this point, this data will be routed through the remainder
of the “Transmit Section” of the XRT59L91 device and
will be transmitted out onto the line via the “TTIP” and
“TRing” output pins.
Figure 13, illustrates the path that the data takes
(within the XRT59L91 device) when the chip is config-
ured to operate in the “Remote Loop-back” Mode.
Figure 13. Illustration of the “Remote Loop-back” path, within the XRT59L91 Device
It should be noted that during “Remote Loop-back”
operation, any data which is input via the RTIP and
RRING input pins, will also be output to the Terminal
Equipment, via the RxPOS and RxNEG output pins.
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| XRT59L921 | TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT |
| XRT59L921IB | TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT59L91ES | 功能描述:外圍驅(qū)動器與原件 - PCI 1 CH E1 AFE 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 |
| XRT59L91ID | 制造商:Exar Corporation 功能描述: |
| XRT59L91ID-F | 功能描述:外圍驅(qū)動器與原件 - PCI 3.3V or 5V Sngl E1 temp -45 to 85C 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 |
| XRT59L91IDTR-F | 功能描述:外圍驅(qū)動器與原件 - PCI SNGLCHANNELE1LIU 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 |
| XRT59L921 | 制造商:EXAR 制造商全稱:EXAR 功能描述:TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT |
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