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TMS320F2800137: Discrepancy in CPU Cycles with Different TMU Configuration Methods

Ankit Saxena
Prodigy 180 points
Part Number: TMS320F2800137
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hi Team,

I am observing a discrepancy in CPU cycles when configuring TMU support through different methods. When I configure TMU support from the Project Properties, the function sinf(90.2f) takes 26 CPU cycles. However, when I configure TMU support through SysConfig, the same function only takes 25 CPU cycles.

Could you please explain why this difference occurs? Additionally, what is the recommended method for configuring TMU support?

  • 0
    TI__Mastermind 24570 points

    Ankit,

    Are you referring to the 1 CPU cycle difference? This could just be the way the reporting is done.

    The TMU instruction itself takes 4 cycles. Look at the generated assembly code please.

    Thanks,

    Sira