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Digital communication system resetting apparatus and method

A technology of digital communication system and reset device, which is applied in the field of reset system to achieve the effect of improving operating efficiency

Inactive Publication Date: 2011-08-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the reset system in the existing digital communication system may interrupt the normal operation of the peripheral business chip business, to provide a simple and reliable reset device and reset method, when the CPU load is too heavy, reset the CPU and It does not interrupt the business of peripheral business chips that are running normally, so as to ensure the operating efficiency of the system

Method used

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  • Digital communication system resetting apparatus and method
  • Digital communication system resetting apparatus and method
  • Digital communication system resetting apparatus and method

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Embodiment Construction

[0019] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] figure 2 It is a structural diagram of the digital communication system reset device of the present invention. The CPU used by the reset device of the digital communication system in the attached drawing is Motorola’s XPC860TCZP66D4, the watchdog circuit uses MAXIM’s MAX706, MR is the manual reset signal input to the watchdog, and WDI is used to feed the watchdog when the CPU is running. Dog feeding input signal, / RESET and / WDO are two reset signals output by the watchdog circuit, / RESET is the power-on / manual reset signal, / WDO is the CPU load is too heavy and cannot respond to user commands for a long time, Unable to report the reset signal of the reset caused by the alarm indication to the network management unit, the reset signal is sent to the CPU by the result of the operation of the logic operation unit. The reset signal / RST...

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Abstract

In the present invention, two different signals are sent out separately by watchdog circuit when CPU is on / manual reset and CPU operation is interrupted and reset signal and reset state signal representing reset source are sent out to CPU by logic operation unit according to these two signals, a warning signal representing its working state is sent to CPU by peripheral service chip and whether peripheral service chip is reset or not is judge by CPU based on the warning signal and reset state signal at the same time when CPU is reset.

Description

technical field [0001] The invention relates to a digital communication system, in particular to a reset system in the digital communication system. Background technique [0002] With the rapid development of the communication industry, the application of digital communication systems is becoming more and more extensive, and the reset system in the digital communication system is an important part. A simple and efficient reset system is undoubtedly of great importance to improve the operating efficiency of the entire digital communication system. Significance. figure 1 It is a structural diagram of a commonly used digital communication system reset device at present. It includes a watchdog circuit, a CPU and a peripheral service chip. The watchdog circuit outputs a reset signal / RESET to the CPU and a peripheral service chip respectively. And reset the peripheral business chip. The advantage of using this reset system is that the circuit is simple and clear, easy to implem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/00H04B1/74
Inventor 郁志勇徐宏慧
Owner ZTE CORP