A spacewire bus router supporting host interface

Abstract

The invention discloses a SpaceWire bus router supporting a host interface, which comprises a SpaceWire port module, a routing switch control module, a configuration port module, a register group and a host interface module. The SpaceWire port module is used to send the data on the SpaceWire link to the routing switching control module or send the data of the routing switching control module to the SpaceWire link; the routing switching control module is used for data transfer between the SpaceWire port module, the configuration port module and the host Routing control between interface modules; configuration port module parses RMAP command packets; register set is used for router configuration and status monitoring; host interface module is used to connect with external processors, and supports external processors to read and write to the SpaceWire bus router. The invention reduces the complexity of the system, expands the access mode, and improves the reliability of data transmission.

Description

technical field [0001] The invention belongs to the field of integrated circuit design and is used for communication and data exchange between electronic devices on board, and relates to a SpaceWire bus router supporting a host interface. Background technique [0002] SpaceWire bus is a high-speed, point-to-point, full-duplex serial bus network, which can meet the data processing requirements of aerospace electronic systems for high-speed, expandable, low-power, and low-cost onboard data bus. It can meet the use requirements of data transmission interfaces such as high-speed sensors, large-capacity solid-state memory, processing units and downlink telemetry subsystems, and provide an integrated data processing network. It is convenient to establish a high-performance spacecraft data processing system, realize the miniaturization of electronic systems, reduce system overhead, and facilitate the reuse of data processing equipment in aerospace applications. SpaceWire technolog...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is: overcome the deficiencies in the prior art, provide a kind of SpaceWire bus router that supports host interface, solve through host interface, can be directly connected with the IO bus of spaceflight special processor BM3803, AT697, solve user When designing the system, the problem of high cost and complex design; through the host interface, data packets can be sent and received, and the register bank can be accessed, which expands the access mode of the SpaceWire bus router and solves the problem that the external processor can only pass through The limitations of external parallel port access; through the host interface, the handshake mechanism can be used to realize the data interaction between the external processor and the SpaceWire bus router. Through the handshake signal, the smooth transmission of data can be ensured, and the reliability of data transmission can be solved.

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