TMS320F28388D: F28388D External Oscillator ppm tolerance

Semih Senyuz

Part Number: TMS320F28388D
Other Parts Discussed in Thread: TMDSCNCD28388D

Hello Sir,

In eval-board(TMDSCNCD28388D) the 25MHz oscillator has +-10ppm.
In data-sheet "Frequency, X1, from external oscillator " max 25MHz.Is it possible to use +-20 or +-25ppm of 25MHz clock.Is it cause anything wrong?

Thanks in advance
Best Regards

8 months ago

0 AJ Favela 8 months ago

TI__Expert 3930 points

Hi,

I apologize as the expert is currently out of office due to the holidays in the US. Please expect a reply once the holidays have past.

Kind regards,

AJ Favela

0 Joseph Casuga 8 months ago in reply to AJ Favela

TI__Mastermind 43960 points

Hi Semih,

The PPM of the X1 clock source will directly translate to the PPM of the system clock (SYSCLK). If your F28388D application does not require PPM that is tighter than +-20 or +-25 (or depending on the PPM for the X1 clock source that is selected), then it should be fine.

Regards,

Joseph

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TMS320F28388D: F28388D External Oscillator ppm tolerance