- 您现在的位置：买卖IC网 > PDF目录369885 > LXT361PE Telecommunication IC PDF资料下载
参数资料
| 型号： | LXT361PE |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成电路 |
| 文件页数： | 15/52页 |
| 文件大小： | 1187K |
| 代理商： | LXT361PE |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页当前第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页
Integrated T1/E1 LH/SH Transceiver for DS1/DSX-1 or PRI Applications
—
LXT361
Datasheet
15
3.3
Receiver
A 1:1 transformer provides the interface to the twisted-pair line. Recovered data is output at RPOS/
RNEG (RDATA in Unipolar mode), and the recovered clock is output at RCLK. Refer to
Table 31
on page 42
for receiver timing specifications.
3.3.1
Receive Equalizer
The receive equalizer processes the signal received at RTIP and RRING. The equalizer gain is up
to 43 dB in E1 Long-Hual applications and up to 36 dB in T1 applications. In T1 Long-Hual
applications, bits EC1 through EC4 in Control Register #1 determine the maximum gain applied at
the equalizer. When EC1 = 0, up to 36 dB of gain may be applied. When EC1 = 1, 26 dB is the gain
limit to provide an increased noise margin in shorter loop operations.
3.3.2
Receive Data Recovery
The transceiver filters the equalized signal and applies it to the peak detector and data slicers. The
peak detector samples the inputs and determines the maximum value of the received signal. The
data slicers are set at 50% of the peak value to ensure optimum signal-to-noise performance.
After processing through the data slicers, the received signal goes to the data and timing recovery
section, then to the B8ZS/HDB3 decoder (if selected) and to the receive monitor. The data and
timing recovery circuits provide input jitter tolerance significantly better than required by AT&T
Pub 62411 and ITU G.823. See the
“
Test Specifications
”
section for details.
Recovered data is routed to the Loss of Signal (LOS) Monitor and through the Alarm Indication
Signal (AIS, Blue Alarm) Monitor. The jitter attenuator (JA) may be enabled or disabled in the
receive data path or the transmit path. Received data may be routed to either the B8ZS or HDB3
decoder or neither. Finally, the device may send the digital data to the framer as either unipolar or
bipolar data.
When transmitting unipolar data to the framer, the device reports reception of bipolar violations by
driving the BPV pin High. During E1 operation, the device can report HDB3 code violations and
Zero Substitution Violations on the BPV pin.
3.3.3
Receiver Monitor Mode
The LXT361 receive equalizer can be used in Monitor mode applications. Monitor mode
applications require 20 dB to 30 dB resistive attenuation of the signal, plus a small amount of cable
attenuation (less than 6 dB). Setting bit CR3.EQZMON = 1 configures the device to operate in
Monitor mode. The device must be in T1/E1 Long-Hual receiver mode (set bits CR1.EC4:1 = 0xx0
or 1001 or 1010) for Monitor mode.
In Monitor mode, the receive equalizer will handle signals attenuated resistively by 20 to 30 dB,
along with 0 to 6 dB of cable attenuation for both E1 and T1 applications.
相关PDF资料 |
PDF描述 |
|---|---|
| LXT362LE | PCM TRANSCEIVER|SINGLE|T-1(DS1)|CMOS|QFP|44PIN|PLASTIC |
| LXT362PE | PCM TRANSCEIVER|SINGLE|T-1(DS1)|CMOS|LDCC|28PIN|PLASTIC |
| LXT362QE | PCM TRANSCEIVER|SINGLE|T-1(DS1)|CMOS|QFP|44PIN|PLASTIC |
| LXT363LE | PCM TRANSCEIVER|SINGLE|T-1(DS1)|CMOS|QFP|44PIN|PLASTIC |
| LXT363PE | PCM TRANSCEIVER|SINGLE|T-1(DS1)|CMOS|LDCC|28PIN|PLASTIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LXT361QE | 制造商:LEVEL ONE 功能描述: 制造商:LEVEL ONE 功能描述:DATACOM, PCM TRANSCEIVER, PQFP44 |
| LXT362 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:Integrated T1 LH/SH Transceiver for DS1/DSX-1 or PRI Applications |
| LXT362LE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:PCM TRANSCEIVER|SINGLE|T-1(DS1)|CMOS|QFP|44PIN|PLASTIC |
| LXT362PE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:PCM TRANSCEIVER|SINGLE|T-1(DS1)|CMOS|LDCC|28PIN|PLASTIC |
| LXT362QE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:PCM TRANSCEIVER|SINGLE|T-1(DS1)|CMOS|QFP|44PIN|PLASTIC |
发布紧急采购，3分钟左右您将得到回复。