參數(shù)資料
型號(hào): 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): 10/28頁
文件大?。?/td> 292K
代理商: XRT59L91
XRT59L91
10
Rev. P2.00
Preliminary
Figure 3, indicates that when the user is operating the
XRT59L91 device in the “Clockless” Mode, then the
Terminal Equipment must do the following.
l
Not apply a signal on the “TxClk” line.
l
When applying a pulse (to either the TxPOS or
TxNEG input pin), apply an RZ pulse to the
appropriate input pin. This RZ pulse should only
have a width of one-half the bit-period. Addition,
the RZ pulse should occupy only the first half of
the bit-period. The TxPOS and TxNEG input pins
must be at 0V, during the second half of every bit-
period.
1.3
The Pulse Shaping Circuit
The purpose of the “Transmit Pulse Shaping” circuit is
to generate “Transmit Output” pulses that comply with
the ITU-T G.703 Pulse Template Requirements for E1
Applications.
An illustration of the “ITU-T G.703 Pulse Template
Requirements” is presented below in Figure 4.
0%
50%
V = 100%
244ns
Nominal Pulse
219ns
(244 - 25)
269ns
(244 + 25)
194ns
10%
10%
20%
Figure 4. Illustration of the ITU-T G.703 Pulse Template for E1 Application
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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(dòng)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(dòng)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(dòng)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