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Original question:

TMS570LS1224: SafeTI Diagnostic Library - start-up

TMS570LS3137: About the problem of moving programs into RAM to run

whong zhao
Genius 4190 points

Part Number: TMS570LS3137

Hello

Team

 when I write DSP2812 programs, I see that other people's code is to moved the program into RAM to run. Some people say that it runs fast, but I dont  tested it and don't understand its original. Is it the same with tms570 series chips? Is it really slow to run in flash? Aren't they all standard clock cycles？

  thank you

  • 0
    TI__Guru**** 201386 points

    Hi Whong,

    The TMS570L3137 internal TCM Flash can support zero address and data wait states up to a CPU speed of 50 MHz in nonpipelined mode. The flash supports a maximum CPU clock speed of 160 MHz in pipelined mode for the PGE Package and 180 MHz for the ZWT package, with one address wait state and three data wait states.

    The TMS570LS3137 internal TCM RAM can support program and data fetches at full CPU speed without any address or data wait states required.

    It is true that running code from SRAM is faster than running from flash.

  • 0 in reply to QJ Wang
    Genius 4190 points

    Hi wang

    Is our structure much better than 28335, much faster, there is no need to run the program in ram?

  • 0 in reply to whong zhao
    TI__Guru**** 201386 points
    whong zhao said:
    Is our structure much better than 28335, much faster,

    I don't have the comparison between TMS570 and F28335. I think execution from flash is good enough.