Interface conversion module of spaceborne electronic system
An electronic system and interface conversion technology, applied in the direction of electrical digital data processing, instruments, etc., can solve the problems of SpaceWire signal 485 signal and 422 signal can not be converted to each other, poor compatibility, etc., to promote modular design, reduce design costs, promote The effect of resource sharing
Active Publication Date: 2013-04-03
赛德雷特(珠海)航天科技有限公司
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Abstract
The invention relates to an interface conversion module of a spaceborne electronic system, which belongs to the technical field of spaceflight data processing, and solves the problems in the prior art that a SpaceWire signal cannot be mutually converted with a CAN signal, a 485 signal and a 422 signal, and the compatibility is poor. After the interface conversion module is electrified, a single chip microcomputer reads a configuration file prestored in a FLASH internal memory, and an FPGA module based on a static random memory is configured through an FPGA configuration port. In the data conversion and transmission process, a signal conversion circuit and a routing circuit continuously output heartbeat signals with a certain period and pulse width and a monitoring circuit constantly monitors whether an abnormal phenomenon exists not. When the output pulse signal is often high and often low or irregular on the period, the monitoring circuit reports the abnormal phenomenon to a state control circuit, the state control circuit sends a control signal to an off-chip single chip microcomputer to command the single chip microcomputer to read the configuration code stream in the FLASH internal memory, and the FPGA module is reconfigured through the FPGA configuration port.
Application Domain
Electric digital data processing
Technology Topic
Data conversionData processing +11
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