Data communication protocol controller suitable for satellite mounted equipment

Abstract

The invention relates to a data communication protocol controller applicable to satellite borne equipment. The controller comprises a control register, a status register, an input cache and an output cache which are all electrically connected with an internal bus, wherein the control register 1 is in electrical connection with a digital quantity input time-sequence control logic array and a digital quantity output time-sequence control logic array through signal wires; a control signal of the digital quantity input time-sequence control logic array is in electrical connection with a serial-in shift register and an external digital quantity input channel; the serial-in shift register is in electrical connection with the input cache through an input parallel data wire; a control signal of the digital quantity output time-sequence control logic array is in electrical connection with a serial-out shift register and an external digital quantity output channel; and the serial-out shift register is in electrical connection with the output cache through a parallel output data wire. The data communication protocol controller solves the problem of automatic control on multiple communication protocols and multipath communication channels, realizes light-minimization of a data acquisition unit, and is established based on a digital logic hardware circuit, so that reliability and stability of the controller can be sufficiently guaranteed.

Description

technical field [0001] The invention relates to a data communication protocol controller, in particular to a data communication protocol controller suitable for satellite-borne equipment. Background technique [0002] In the data management system of the spacecraft, a special communication protocol is usually formulated for serial digital communication. There is a special data collector in the data management system to manage the payload unit interfaced with it according to the communication protocol. The traditional implementation method of the data collector uses software to control the external port of the CPU to generate the control signal required by the protocol, and receives or sends data under the control of the port signal. For the specific method, please refer to the synchronous communication controller based on the ISA bus in Document 1. (Chinese core journal "Microcomputer Information" (Measurement and Control Automation) 2005, Volume 21, No. 3, Synchronous Comm...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned existing use of software to control the circuit to generate the control signal required by the protocol. The efficiency is low, a plurality of data collectors must be set, and the defects of increasing the weight and power consumption of the spacecraft; The working efficiency and miniaturization of the device data management system, thus providing a data communication protocol controller suitable for spaceborne devices implemented by FPGA

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