Multipath clock detecting device

Abstract

The invention discloses a multi-path clock detester which comprises: a clock receiving unit, a multi-path multi-speed clock detecting unit, a detecting result processing unit, a reference clock unit and a control interface unit, wherein the reference clock unit is used to receive the detected clock signal and change the level interface and the voltage breadth of the detected signal; the detecting result processing unit is used to finish the lock, output and indicate of the detecting result; the reference clock unit is used to provide a reference clock signal to the multi-path multi-speed clock detecting unit; the control interface unit is used to generate the corresponding break signal to the upper position controller and receive the control of the upper position controller to finish the reset and disinfect of the multi-path multi-speed clock detecting unit; the multi-path multi-speed clock detecting unit is formed by a plurality of clock detecting circuits to finish the detect of the multi-path detecting clock with different speed.

Description

technical field [0001] The invention relates to clock testing in the communication field, in particular to a device for realizing multi-channel multi-rate clock detection. Background technique [0002] In the telecommunication system, the clock units or clock boards of many systems will output multiple clocks of different rates to other systems and single boards. When testing these systems, the existence status and performance indicators of the output clocks are usually Items that must be tested. On the other hand, sometimes the clock in the communication system is temporarily lost (temporary loss of the clock is manifested as a single high level or low level of the clock signal). In many applications, once the clock is lost, it will affect the entire system It will have a serious impact, so the clock must be monitored in real time. [0003] In the implementation of conventional technology, a monostable trigger (such as 74HC123, etc.) can be used to detect the pulse loss o...

AI Technical Summary

Problems solved by technology

In this way, when the measured clock frequency is high, the selection of detection frequency becomes the bottleneck of circuit implementation, and the cost of implementation is also very high.

Images