TMS320F280049: there is no overlap mode for F280049 ADC?

Aki Li

Part Number: TMS320F280049

It seems that the overlap mode is removed in F280049. So is it overlap or non overlap by default? Actually, I am still not quite clear about the benefit of overlap mode. Could you help give more details about it? Thank you.

over 6 years ago

0 Joseph Casuga over 6 years ago

TI__Mastermind 38630 points

Hi Aki,

Sorry, not sure what you meant by ADC overlap. Can you expound on this?

Thanks,

Joseph

0 Aki Li over 6 years ago in reply to Joseph Casuga

TI__Genius 9915 points

Hi Joseph,

In former devices, ADC module control register 2 (ADCCTL2) has an ADCNONOVERLAP bit.Overlap of sample and conversion can be enabled or not.

0 Joseph Casuga over 6 years ago in reply to Aki Li

TI__Mastermind 38630 points

Hi Aki,

Ok, got it. The older device ADCs have an issue in that the sampling and conversion phases between two SOCs can interfere and cause conversion issues. The ADCNONOVERLAP bit would give a control to the user so sampling and conversion phases between SOCs will not overlap. The F280049 ADC is designed differently and does not have this overlap issue.

Regards,

Joseph

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280049: there is no overlap mode for F280049 ADC?