Original question:
Tool/software: Code Composer Studio
Hello!
Want to understand for accurate setting. How the UCD device makes a comparison of 18 bits registers
LoopMuxRegs.LLENTHRESH.bit.TURN_ON_THRESH
LoopMuxRegs.LLDISTHRESH.bit.TURN_OFF_THRESH
With 24 bits resister of output of the filter FILTERYNREAD
6 right shift filter register or 6 left shift LL registers?
Thanks
Hi Andrey,
Please take a look at the filter's last connection stage to DPWM:
The TURN_ON_THRESH and TURN_OFF_THRESH are not getting compared to the 24 bit Filter YN, but compared with the18 bit Filter Duty.
The major difference between the two is the multiplication by KCompx or DPWMx Period, then rounded from 38 bit to 18 bit.
You can read the Filter Duty from DPWM Filter Duty Read Register (DPWMFILTERDUTYREAD).
If you read both Filter YN from the filter and Filter Duty from the dpwm, the relation will get clear to you.
Regards,
