Design And Implementation Of Multi-core DSP Local Reconstruction System

With the continuous development of computer and microelectronics technology,the avionics system is moving forward to the direction of modularization,function integration.Traditional integrated avionics signal processing unit has been unable to meet the technical requirements of design parameters and project updating.The design requirements of system hardware integration,high-speed data transmission,software modularization,reconfigurable configuration are inevitable directions.This paper aims to study the key technologies of hardware integration,high speed data transmission bus and software local reconstruction.A signal processing platform design is proposed,which has functions of High data transmission and local reconstruction,with a high-performance FPGA and a multicore DSP as signal processing module and a normal-performance FPGA as management module.In order to meet the modern integrated avionics signal processing units’ needs of large data throughput and easily offline updating,This paper first comprehensively analyse the needs and divide system into signal processing module and management module.Secondly power module,clock module,peripherals of procrssorin sysytem are described.Then the principles of high-speed serial interface and gigabit ethernet are described,with actual test of transimition speed and error rate.In addition based on the subject requirement spi boot mode is selected,with descrbing the multicores dsp chip bootmode.At last based on the exposition of spi boot mode,a design scheme of software local reconstruction is put forward.A signal processing unit with the functions of high speed transmittion and software local reconstruction is completed in this paper.The system is stable and with high-performance,which could be applied to mordern avionics system.