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How much data the C6457 DSP will copy from the external flash with the EMIFA boot mode

Cheng-Han Lee
Prodigy 50 points
Other Parts Discussed in Thread: TMS320C6457, TMS320C6416

Hello, I'm using the TMS320C6457 DSP with our in house board.

We are setting the DSP in the EMIFA boot mode with Bootmode[3:0] = 0101b.

When we power on the DSP, we know it will copy data from the external flash which is on the EMIFA interface into DSP internal memory.

But I can't find any document has described the location and amount that the data will been moved.

We used the TMS320C6416 DSP before, the TMS320C6416 DSP will copy 1KB data into its L2 cache.

Are the TMS320C6416 and the TMS320C6457 the same?

Please help me to find the answer, I,m working on the boot code.

 

Thank you.

Jason Lee

  • 0
    TI__Guru* 84110 points

    Please read the Bootloader User's Guide for the TMS320C6457. From the Product Folder link at the end of the first sentence, click Technical Documents and look for Bootloader. You will find the description of the EMIFA boot mode function in that document.

    Regards,
    RandyP

     

    If you need more help, please reply back. If this answers the question, please click  Verify Answer  , below.

  • 0 in reply to RandyP
    Prodigy 50 points

    Dear Randy:

    Thanks for your information, but I have read this document before. In the section 2.3.3 and 3.3.5 "EMIFA Boot mode", it only describes the base address.

    I want to know the size of data that will been moved into DSP, and where the DSP stored.

    Would you know these information? Please help me to find out.

     

    Thank you

    Jason Lee

  • 0 in reply to Cheng-Han Lee
    TI__Guru* 84110 points

    Jason Lee,

    Section 2.3.3 simply states the functionality of the EMIFA boot mode.

    SPRUEC6f C645x Bootloader User's Guide, Section 2.3.3 said:
    In EMIFA boot mode, the bootloader simply branches to the base address of EMIFA CE3 (0xB000 0000).
    Interrupts are disabled.

    Regards,
    RandyP

     

    If you need more help, please reply back. If this answers the question, please click  Verify Answer  , below.