在DSP应用中,通常需要DSP内核空间数据之间、内核空间数据与外接器件空间数据互相传输。例如,在脱机运行条件下,系统加电后DSP自行将代码从外扩非易失性存储器中装载到DSP内核空间或DDR中执行,这是DSP开发的重点和难点,关系到系统的可靠性和处理速度。HX1041与传统通用数字信号处理器数据传输方式不同,禁止其并口外接的非易失性存储区域向内存代码段区域或外接的易失性存储器区域传输数据,这样会导致脱机运行的程序无法自启动。本文提出一种解决魂芯HX1041并口与限制区域数据传输问题的方法,在不改动原有硬件设计的前提下,实现芯片HX1041全区域空间数据互传功能。

In DSP applications,it is usually necessary to transfer DSP kernel spatial data,kernel spatial data and external device spatial data to each other.For example,when DSP is running offline,after the system is powered on,DSP automatically loads the code from the extended non-colatile memory into the kernel space or DDR for execution,which is one of the key and difficult points in DSP development,and relates to the reliability and processing speed of the system.HX1041 is different from the traditional general-purpose digital signal processor data transmission mode,it is parallel to the external non-volatile memory area forbids the transfer of data to the memory code segment area or the external volatile memory area,so that the off-line running program can not start itself.This paper presents a method to solve the problem of parallel port and restricted area data transmission of soul core HX1041.Without changing the original hardware design,it can realize the function of HX1041 whole area spatial data transmission.