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Part Number: TMDSCNCD28379D
Other Parts Discussed in Thread: AMC1304M25

Hello everyone,

I am using AMC1304M25 SDFM to sense both current and voltage in my design. I have a question about sync reset. The reason to use sync reset is provide synchronization between SDFM demodulator and PWMs. After a latency time data at the register is ready to read. Can I make prescaling for reset. I do not want sync reset in every  PWM cycle. Because I do not need to read data from demodulator at every PWM cycle. I want to increase resolution of the feedback by increasing latency time. I did not find a way to reset SDFM in every two PWM cycle. 


  • Alican,

    PWM.CMPC / CMPD signals help SDFM synchronize with respect to PWMs. We don't have hardware logic in either PWM / SDFM to issue one sync event every other PWM cycle. If you wish to read demodulator every other PWM cycle you may have to use timer interrupt rather than SDFM interrupt to read filter results.