A design method of high-speed multiplexer synchronous serial interface for ping-pong anti-collision

Abstract

A kind of high-speed multiplexer synchronous serial interface design method used for ping-pong anti-collision of the present invention comprises the following steps: determine the number of bytes sent by the high-speed multiplexer synchronous serial communication interface; the high-speed multiplexer synchronous serial communication interface receives Adjust the phase relationship between the input gate and the symbol clock for the external input gate signal, and correct the adjusted gate; perform anti-collision processing according to the relative delay of the corrected gate and external processor access, and adjust Data transmission timing; the processor reads the status register of the high-speed multiplexer, and performs conflict control on the ping-pong bus access to realize the control switching of the ping-pong buffer; under the control of the processor and when the corrected wave gate is valid, buffer the ping-pong data The data in the area is converted into serial data and output to the data line of the high-speed multiplexer. The invention improves the reliability and stability of the synchronous serial interface communication of the high-speed multiplexer through the above conflict processing method.

Description

technical field [0001] The invention relates to a high-speed multiplexer synchronous serial interface design method for ping-pong anti-collision, which is suitable for anti-collision processing of the high-speed multiplexer synchronous serial interface, and belongs to the field of serial interface communication counting. Background technique [0002] The control computer acquires multiple different or identical camera images, sensor data, actuator status and control parameters, telemetry data, and time codes. These information range from low to high rates, and need to use limited physical channels. Efficient downward transfer. The communication structure that completes efficient transmission is the high-speed multiplexer. Its transmission bandwidth and rate are very high. It can combine multiple narrow bandwidth and low-speed signals into one high-speed signal for transmission at the receiving end. Restore the signal information of each channel through tapping. Due to the ...

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Problems solved by technology

Since the arrival time of the wave gate is synchronous with the access of the processor, the serial port controller is an asynchronous operation. During the communication process of the high-speed multiplexer, there is a potential timing conflict caused by relative phase drift between the read and write time of the processor and the arrival time of the rising edge of the wave gate. risk

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