参数资料
| 型号： | XRT73R12IB-L |
| 厂商： | Exar Corporation |
| 文件页数： | 72/89页 |
| 文件大小： | 0K |
| 描述： | IC LIU E3/DS3/STS-1 12CH 420TBGA |
| 标准包装： | 40 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 12/12 |
| 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： | 420-LBGA 裸露焊盘 |
| 供应商设备封装： | 420-TBGA（35x35） |
| 包装： | 托盘 |
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页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页当前第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页
XRT73R12
71
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.0.3
5
Digital LOS Defect
Declared
R/O
Digital LOS Defect Declared:
This READ-ONLY bit-field indicates whether or not the Digital 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 den-
sity (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 XRT73R12) 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.
4
Analog LOS Defect
Declared
R/O
Analog LOS Defect Declared:
This READ-ONLY bit-field indicates whether or not the Analog LOS (Loss of
Signal) detector is declaring the LOS Defect condition.
For DS3 and STS-1 applications, the Analog LOS Detector will declare the
LOS Defect condition whenever it determines that the amplitude of the
pulses (within the incoming DS3/STS-1 line signal) drops below a certain
Analog LOS Defect Declaration threshold level.
Conversely, (again for DS3 and STS-1 applications) the Analog LOS Detec-
tor will clear the LOS Defect condition whenever it determines that the
amplitude of the pulses (within the incoming DS3/STS-1 line signal) has
risen above a certain Analog LOS Defect Clearance threshold level.
It should be noted that, in order to prevent "chattering" within the Analog
LOS Detector output, there is some built-in hysteresis between the Analog
LOS Defect Declaration and the Analog LOS Defect Clearance threshold
levels.
0 - Indicates that the Analog LOS Detector is NOT declaring the LOS Defect
Condition.
1 - Indicates that the Analog LOS Detector is currently declaring the LOS
Defect condition.
NOTES:
1.
LOS Detection (within each channel of the XRT73R12) 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.
3
Reserved
TABLE 33: ALARM STATUS REGISTER - CHANNEL N ADDRESS LOCATION = 0XM3
(N = [0:11] & M= 0-5 & 8-D)
BIT NUMBER
NAME
TYPE
DESCRIPTION
相关PDF资料 |
PDF描述 |
|---|---|
| XRT75L00DIV-F | IC LIU E3/DS3/STS-1 SGL 52TQFP |
| XRT75L00IV-F | IC LIU E3/DS3/STS-1 SGL 52TQFP |
| XRT75L02DIV-F | IC LIU E3/DS3/STS-1 2CH 100TQFP |
| XRT75L03DIV-F | IC LIU E3/DS3/STS-1 3CH 128LQFP |
| XRT75L03IV-F | IC LIU E3/DS3/STS-1 3CH 128LQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| XRT74L73 | 制造商:EXAR 制造商全称:EXAR 功能描述:3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER |
| XRT74L73IB | 制造商:EXAR 制造商全称:EXAR 功能描述:3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER |
| XRT74L74 | 制造商:EXAR 制造商全称:EXAR 功能描述:4 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER |
| XRT74L74IB | 制造商:EXAR 制造商全称:EXAR 功能描述:4 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER |
| XRT75L00 | 制造商:EXAR 制造商全称:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
发布紧急采购，3分钟左右您将得到回复。