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TMS320C6455 booting using NOR flash

Rahul16136
Intellectual 300 points
Other Parts Discussed in Thread: TMS320C6455

Hi,

     I am designing a board using TMS320C6455 DSP. I am using a NOR flash for booting purpose through EMIFA & i have connected it in 16bit mode. According to DSP datasheet,  boot setting (AEA[19:16] - 0100) is specified only to 8bit ROM boot.

I want to know whether it is possible to boot the DSP through EMIFA in 16bit mode.

 

Thanks & Regards,

Rahul.

 

 

  • 0
    TI__Mastermind 42545 points

    Unfortunately the EMIFA boot uses the default values for the CE3CFG register and the default bus size is 8bit.  You could use the I2C boot option and place a small program in the I2C memory to configure the CE3CFG register for 16bits and then jump to the first location in that memory space.  That is probably your lowest cost solution.