Method research of TMS320VC5509A's secondary boot in parallel flash mode
Pla N · Electronic Measurement Technology · 2014
Boot Loader of TMS320VC5509Adoesn't support the function of accessing to external memory in pages.As a result,the DSP chip is not able to boot when the DSP program takes up more than 16KB.In order to solve this problem,a method of VC5509A's secondary boot in parallel Flash mode was proposed in this paper.A Nor Flash chip S29AL008Dwith 1MB memory room was used as the external memory for the DSP program storage.DSP's accessing to the Flash in pages was realized by using a FPGA chip to control the high address of the Flash.Theory of Boot Loader was presented,and the DSP secondary boot method by using aprogram of Second Loader was proposed.The hardware structure designed in the method has applicability in many fields.The secondary boot method is easy and practical,and makes the VC5509Acould support the boot when the DSP program is larger than 16KB.