TMS320F280039C: CLB exectue speed

Casper Wang

Part Number: TMS320F280039C
Other Parts Discussed in Thread: TMS320F280049C

Hi Experts,

Our project try to move to TMS320F280039C from TMS320F280049C.

We start to check major the functions using LaunchPad Kit(F28003X).

When evaluating the CLB module, the application behavior of the CLB fucntion is correct and the task time consumption is much better than TMS320F280049C.

We check all the CLB functions of TMS320F280039C are executed faster than CLB of TMS320F280049C.

For example, the CLB reset function will consume 20us for 49C but only 5us for 39C.

We know the 39C are improved the +20% for CPU speed (120Mhz).

But the time consumption is 4X decrease.

Is it correct for CLB time behavior?

Thanks

Casper

over 3 years ago

+1 Peter Luong1 over 3 years ago

TI__Genius 17401 points

Hi Casper,

The F28004x device has Type 2 CLB and the F28003x has Type 3 CLB. You can see the differences between the types with the CLB section of the C2000 Peripherals Guide (https://www.ti.com/lit/spru566#page=40). The CLB peripheral on both devices should be clocked at the same 100 MHz frequency, though. Are the programs you are running the same between both devices and can you verify that they are running the same level of optimization?

Regards,

Peter

0 Casper Wang over 3 years ago in reply to Peter Luong1

Prodigy 60 points

Hi Peter,

Thanks for your information, I will check that.

0 Peter Luong1 over 3 years ago in reply to Casper Wang

TI__Genius 17401 points

Thank you, looking forward to your response.

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TMS320F280039C: CLB exectue speed