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Watchdog circuit and signal processing circuit

A signal processing circuit and watchdog technology, applied in electrical digital data processing, generation of response errors, instruments, etc., can solve problems such as difficult program simulation or upgrade, and achieve the effect of solving simulation or upgrade

Active Publication Date: 2017-05-31
SICHUAN JIUZHOU ELECTRIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The application provides a watchdog circuit and a signal processing circuit, which are used to solve the problem in the prior art that it is difficult to simulate or upgrade the program of the processor connected with the watchdog circuit

Method used

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  • Watchdog circuit and signal processing circuit
  • Watchdog circuit and signal processing circuit
  • Watchdog circuit and signal processing circuit

Examples

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Embodiment 1

[0032] The embodiment of the present invention provides a watchdog circuit 10, referring to figure 1 , the watchdog circuit 10 includes a reset signal circuit 110 and an analog switch 120, and the input end of the analog switch 120 is connected to the output end of the reset signal circuit 110, and the output end of the analog switch 120 is connected to the reset signal input end of the processor 20. When the analog switch 120 is turned on, the reset signal generated by the reset signal circuit 110 is transmitted to the processor 20 through the analog switch 120 , and the reset signal resets the processor 20 .

[0033] The analog switch 120 specifically includes: a normally closed (Normally-closed, NC) pin, a common (Common, COM) pin, a power supply (Volt Current Condenser, VCC) pin, a wire ground (Ground, GND) pin, a normally open (Normally-opend, NO) pin and select (Select, SEL) pin. Wherein, the NC pin is the input end of the analog switch 120, which is connected with the ...

Embodiment 2

[0056] Embodiment 2 of the present invention provides a signal processing circuit 40, refer to Figure 5 , the circuit includes: a processor 410, a clock circuit 420, a memory 430, and a watchdog circuit 440 in Embodiment 1 of the present invention.

[0057] Wherein, the processor 410 is used for signal processing; the clock circuit 420 is used for providing a working clock signal for the processor 410; the memory 430 is used for providing storage space for the processor 410; Provides a reset signal.

[0058] Draw the first pin 441 from the VCC pin of the watchdog circuit 440, and use a wire to connect to the first end 510 of the inspection socket 50 outside the cavity; the second pin 442 drawn from the SEL pin of the analog switch, and use The wire is connected to the second end 520 of the extraluminal inspection socket 50 .

[0059] When simulating or upgrading the program of the processor 410, the first pin 441 and the second pin 442 can be short-circuited through a jumpe...

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Abstract

The invention provides a watchdog circuit and a signal processing circuit, and aims at solving the problem in the prior art that it is hard to conduct simulation or update on a program of a processor connected to the watchdog circuit. The watchdog circuit comprises a reset signal circuit and an analog switch, the reset signal circuit is used for generating a reset signal, and the reset signal is used for resetting the processor connected to the watchdog circuit; an input end of the analog switch is connected to an output end of the reset signal circuit, an output end of the analog switch is connected to a reset signal input end of the processor, and the analog switch is used for connecting or disconnecting an access between the output end of the reset signal circuit and the processor.

Description

technical field [0001] The invention relates to the technical field of digital signal processing, in particular to a watchdog circuit and a signal processing circuit. Background technique [0002] In the field of digital signals, when the processor program is abnormal, the reset signal output by the watchdog circuit is usually used to reset the processor passively and restart. The processor feeds the watchdog at a time interval shorter than the period of the reset signal, so that the watchdog circuit disables the periodic reset function, that is, does not output the reset signal. [0003] However, when simulating or upgrading the program of the processor, the time-consuming of the simulation and upgrading is usually longer than the cycle of the reset signal, so the processor cannot feed the watchdog at an interval shorter than the reset cycle. The watchdog circuit The reset signal will still be output, and the reset signal will interrupt the emulation or upgrade process of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/07G06F1/24
CPCG06F1/24G06F11/0757Y02D10/00
Inventor 杨先超任超熊函王凯
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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