四通道T1 / E1 / J1长途/短途线路接口单元
产业
温度范围
目录
1
2
3
IDT82V2084引脚配置............................................... ........................................... 8
引脚说明....................................................................................................................... 9
功能说明................................................ .................................................. .. 14
3.1
T1 / E1 / J1模式选择........................................... ............................................... 14
3.2
发送通道............................................................................................................. 14
3.2.1发射路径系统接口........................................... ................... 14
3.2.2编码器.............................................................................................................. 14
3.2.3脉冲整形器............................................. .................................................. ..... 14
3.2.3.1预置脉冲模板............................................ .............................. 14
3.2.3.2 LBO (行构建出) ......................................... ...................................... 15
3.2.3.3用户可编程任意波形.......................................... ...... 15
3.2.4发送通道线路接口........................................... .......................... 19
3.2.5发送通道POWER DOWN ........................................... ............................. 19
3.3
接收路径............................................................................................................... 20
3.3.1接收内部终止............................................ ........................ 20
3.3.2在线监测...................................................................................................... 21
3.3.3自适应均衡器............................................. ............................................ 21
3.3.4接收灵敏度............................................. ............................................ 21
3.3.5数据限幅器........................................................................................................ 21
3.3.6 CDR (时钟&数据恢复) ........................................ ........................................ 21
3.3.7解码器.............................................................................................................. 21
3.3.8接收路径系统接口........................................... ..................... 21
3.3.9接收路径POWER DOWN ........................................... ................................ 21
3.3.10 G.772非侵入式监测........................................ ........................ 22
3.4
抖动衰减器................................................ .................................................. .. 23
3.4.1抖动衰减功能说明........................................... 23
3.4.2抖动衰减性能............................................ ................. 23
3.5
LOS和AIS检测.............................................. ............................................... 24
3.5.1 LOS检测............................................. .................................................. .... 24
3.5.2 AIS检测............................................. .................................................. ..... 25
3.6
透射检测内在规律性............................................. ........... 26
3.6.1传输所有ONES ............................................ ............................................... 26
3.6.2传输所有零点............................................ ............................................. 26
3.6.3 PRBS / QRSS产生和检测......................................... ........... 26
3.7
LOOPBACK ...................................................................................................................... 26
3.7.1模拟环回............................................. ............................................... 26
3.7.2数字环............................................. ................................................ 26
3.7.3远方返回............................................. ............................................... 26
3.7.4 INBAND LOOPBACK.............................................................................................. 28
3.7.4.1发送激活/停用环回守则......................................... 28
3.7.4.2接收激活/停用环回守则......................................... 28
3.7.4.3自动远程环回............................................ ...................... 28
3