參數(shù)資料
型號(hào)： XRT75L02IV-F
廠商： Exar Corporation
文件頁數(shù)： 20/50頁
文件大?。?/td> 0K
描述： IC LIU E3/DS3/STS-1 2CH 100TQFP
標(biāo)準(zhǔn)包裝： 90
類型： 線路接口裝置（LIU）
驅(qū)動(dòng)器/接收器數(shù)： 2/2
規(guī)程： DS3，E3，STS-1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 100-LQFP
供應(yīng)商設(shè)備封裝： 100-TQFP（14x14）
包裝： 托盤
XRT75L02
xr
TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
REV. 1.0.3
25
that is compliant with the Alternating polarity requirement of the AMI (Alternate Mark Inversion) line code and
‘V’ refers to a Bipolar Violation (e.g., a bipolar pulse that violates the AMI line code). The substitution of B0V or
00V is made so that an odd number of bipolar pulses exist between any two consecutive violation (V) pulses.
This avoids the introduction of a DC component into the line signal.
4.2.2
HDB3 Encoding:
An example of the HDB3 encoding is shown in Figure 15. If the HDB3 encoder detects an occurrence of four
consecutive zeros in the data stream, then the four zeros are substituted with either 000V or B00V pattern. The
substitution code is made in such a way that an odd number of bipolar (B) pulses exist between any
consecutive V pulses. This avoids the introduction of DC component into the analog signal.
NOTES:
1.
When Dual-Rail data format is selected, the B3ZS/HDB3 Encoder is automatically disabled.
2.
In Dual-Rail format, the Bipolar Violations in the incoming data stream is converted to valid data pulses.
3.
Encoder and Decoder is enabled only in Single-Rail mode.
4.3
TRANSMIT PULSE SHAPER:
The Transmit Pulse Shaper converts the B3ZS encoded digital pulses into a single analog Alternate Mark
Inversion (AMI) pulse that meet the industry standard mask template requirements for STS-1 and DS3. See
Figures 8 and 9.
For E3 mode, the pulse shaper converts the HDB3 encoded pulses into a single full amplitude square shaped
pulse with very little slope. This is illustrated in Figure 7.
The Pulse Shaper Block also includes a Transmit Build Out Circuit, which can either be disabled or enabled by
setting the TxLEV_n input pin “High” or “Low” (in Hardware Mode) or setting the TxLEV_n bit to “1” or “0” in the
control register (in Host Mode).
For DS3/STS-1 rates, the Transmit Build Out Circuit is used to shape the transmit waveform that ensures that
transmit pulse template requirements are met at the Cross-Connect system. The distance between the
transmitter output and the Cross-Connect system can be between 0 to 450 feet.
FIGURE 14. B3ZS ENCODING FORMAT
FIGURE 15. HDB3 ENCODING FORMAT
0
1
V
B
V
1
0
V
B
V
0
T C lk
Line
S ignal
T PD A T A
0
1
V
B
V
1
0
V
0
TClk
Line
Signal
TPDATA
相關(guān)PDF資料
PDF描述
MS3101F22-12S CONN RCPT 5POS FREE HNG W/SCKT
M83723/75A14126 CONN PLUG 12POS STRAIGHT W/SCKT
MS3106A20-15SW CONN PLUG 7POS STRAIGHT W/SCKT
XRT83L38IB IC LIU T1/E1/J1 OCTAL 225BGA
IDT72V3660L10PF8 IC FIFO SS 4096X36 10NS 128-TQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT75L02IVTR-F 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
XRT75L03 制造商:EXAR 制造商全稱:EXAR 功能描述:THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
XRT75L03D 制造商:EXAR 制造商全稱:EXAR 功能描述:THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
XRT75L03DES 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 3 CH T3/E3/STS1 LIU+DESYNCH3.3V RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
XRT75L03DIV 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 3CHNNEL E3/DS3/STS 1 SONET DE-SYNCH 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*