参数资料
型号: XRT75VL00D
厂商: Exar Corporation
英文描述: E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
中文描述: E3/DS3/STS-1线路接口单元与SONET DESYNCHRONIZER
文件页数: 30/92页
文件大小: 836K
代理商: XRT75VL00D
XRT75VL00D
E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
REV. 1.0.3
31
As defined in ITU-T G.775, an LOS condition is also declared between 10 and 255 UI (or E3 bit periods) after
the actual time the LOS condition has occurred. The LOS condition is cleared within 10 to 255 UI after
restoration of the incoming line signal. Figure 20 shows the LOS declaration and clearance conditions.
5.4.3
Muting the Recovered Data with LOS condition:
When the LOS condition is declared, the clock recovery circuit locks into the reference clock applied to the
ExClk pin and output this clock on the RxClk output. The data on the RPOS and RNEG pins can be forced to
zero by pulling the LOSMUT pin “High” (in Hardware Mode) or by setting the LOSMUT bits in the individual
channel control register to “1” (in Host Mode).
NOTE: When the LOS condition is cleared, the recovered data is output on RPOS and RNEG pins.
FIGURE 20. LOSS OF SIGNAL DEFINITION FOR E3 AS PER ITU-T G.775.
Actual Occurrence
of LOS Condition
Line Signal
is Restored
Time Range for
LOS Declaration
Time Range for
LOS Clearance
G.775
Compliance
G.775
Compliance
0 UI
10 UI
0 UI
10 UI
255 UI
RTIP/
RRing
RLOS Output Pin
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相关代理商/技术参数
参数描述
XRT75VL00D_08 制造商:EXAR 制造商全称:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET
XRT75VL00D1V-F 制造商:Exar Corporation 功能描述:
XRT75VL00DES 功能描述:时钟合成器/抖动清除器 1CHT3/E3/STS1LIU+ DESYNC 3.3V DRV VER RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel
XRT75VL00DIV 功能描述:时钟合成器/抖动清除器 3.3V 1 CH E3/DS3/STS W/SONET DE-SYNCH RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel
XRT75VL00DIV-F 功能描述:时钟合成器/抖动清除器 3.3V 1 CH E3/DS3/STS W/SONET DE-SYNCH RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel