A kind of power-on control circuit of multiprocessor system on chip mpsoc

Abstract

The invention relates to a power-on control circuit of a multiprocessor system on chip MPSOC, comprising: a delay control sub-circuit and a voltage integral control sub-circuit; when the MPSOC is powered on, the enabling input signal is changed from the first level to the second Two levels, the output signal of the OR gate is flipped from the first level to the second level, and the port output signals of the first output terminal, the second output terminal, and the third output terminal of the first timing control chip are delayed for several times in sequence. After the preset clock cycle, it is flipped from the first level to the second level; the output signal of the AND gate is flipped from the first level to the second according to the signal flip of the port output signal of the third output terminal of the first timing control chip. level; the port output signals of the first output terminal, the second output terminal, and the third output terminal of the second timing control chip are sequentially delayed from the first level to the second level after a plurality of preset clock cycles; When the integrated voltage of the voltage integration circuit reaches the set voltage threshold, the voltage judgment delay chip outputs a second level signal.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a power-on control circuit of a multiprocessor system on chip MPSOC. Background technique [0002] With the development of electronic technology, traditional processors can no longer quickly process the increasing data, and the multi-processor system on chip (Multi Processor System on Chip, MPSOC) developed today can realize it, but the multi-processor system on chip MPSOC Electrical timing is required. [0003] Incorrect power-on sequence will cause the chip not to work normally, or even burn out. The power-on start-up process is a stage with a high power failure rate, which has a great impact on the quality and reliability of electronic products. For example, in a light emitting diode (Light Emitting Diode, LED) display screen, powering on each power-on module of the display screen at the same time may easily lead to excessive inrush current of the power-on modules and a ...

AI Technical Summary

Problems solved by technology

The number of output circuits is limited, and it is impossible to detect whether the output of each power supply is normal

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