参数资料
型号: XRT75L03DIV-F
厂商: Exar Corporation
文件页数: 109/134页
文件大小: 0K
描述: IC LIU E3/DS3/STS-1 3CH 128LQFP
标准包装: 72
类型: 线路接口装置(LIU)
驱动器/接收器数: 3/3
规程: DS3,E3,STS-1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 128-LQFP 裸露焊盘
供应商设备封装: 128-LQFP(14x20)
包装: 托盘
XRT75L03D
á
REV. 1.0.0
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
71
5
Digital LOS Defect
Declared
R/O
0
Digital LOS Defect Declared:
This READ-ONLY bit-field indicates whether or not the Dig-
ital LOS (Loss of Signal) detector is declaring the LOS
Defect condition.
For DS3 and STS-1 applications, the Digital LOS Detector
will declare the LOS Defect condition whenever it detects
an absence of pulses (within the incoming DS3 or STS-1
data-stream) for 160 consecutive bit-periods.
Further, (again for DS3 and STS-1 applications) the Digital
LOS Detector will clear the LOS Defect condition whenever
it determines that the pulse density (within the incoming
DS3 or STS-1 signal) is at least 33%.
0 - Indicates that the Digital LOS Detector is NOT declaring
the LOS Defect Condition.
1 - Indicates that the Digital LOS Detector is currently
declaring the LOS Defect condition.
NOTES:
1.
LOS Detection (within each channel of the
XRT75L03D) is performed by both an Analog
LOS Detector and a Digital LOS Detector. The
LOS state of a given Channel is simply a WIRED-
OR of the LOS Defect Declare states of these two
detectors.
2.
The current LOS Defect Condition (for the
channel) can be determined by reading out the
contents of Bit 1 (Receive LOS Defect Declared)
within this register.
BIT NUMBER
NAME
TYPE
DEFAULT
VALUE
DESCRIPTION
相关PDF资料
PDF描述
XRT75L03IV-F IC LIU E3/DS3/STS-1 3CH 128LQFP
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