TMS320F280049: About boot time

Huihuang Chen

Part Number: TMS320F280049

Hi Champ,

My customer want to know F280049 below time:

1.How many instruction between the XRS release to high to CPU jump to the Flash boot entry point(0x80000)?

2.If no global variable with initial value, how many instruction need when CPU jump to Flash boot entry point to CPU jump to the first instruction of main() function?

Could you kindly help on these questions?

over 3 years ago

0 Huihuang Chen over 3 years ago

TI__Expert 3840 points

HI Champ,

Any feedback about the instruction cycles for above two case?

0 Baskaran Chidambaram over 3 years ago

TI__Genius 17370 points

1. Around 9000 cycles

2. This also depends on the global uninitialized variables which need to be initialized to 0. I believe it depends on the application code, i am not sure if this can e constant number.

0 Huihuang Chen over 3 years ago in reply to Baskaran Chidambaram

TI__Expert 3840 points

For the 2nd question, suppose no variable need to be initialized to 0, please advise the mini cycles!

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TMS320F280049: About boot time