TMS320F280033: SDFM questions

Koichiro Tashiro

Part Number: TMS320F280033

Tool/software:

Hi,

My customer is looking for MCU with Sigma Delta Filter Module (SDFM).
Here are their requirements.
a) SINC3 filter with OSR=256 or more
b) 4ch or more (8ch is preferred) per 1 MCU
c) Multiple MCUs can synchronized for simultaneous delta-sigma sampling

I think F280033 can meet a) and b), but I am not sure c) can be supported.
Is there any mechanism to synchronize delta-sigma sampling timing among MCUs?

Thanks and regards,
Koichiro Tashiro

4 months ago

0 Koichiro Tashiro 4 months ago

TI__Mastermind 22935 points

There is one update.
The customer changed OSR requirement between 512 and 1024.
I thought the max OSR is 256 for C2000, correct?

Thanks and regards,
Koichiro Tashiro

0 Han Zhang6 4 months ago in reply to Koichiro Tashiro

TI__Expert 6655 points

Yes, our max OSR in current IP is 265. If you get valid request from customer for higher OSR, please send it over via email and we can consider including this feature in future device.

For sync between multiple MCUs, we can send out and take in sync signal in the sync chain on GPIO for SDFM just like ADC.

Han

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280033: SDFM questions