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What's Remap ePWMs for DMA access (Requires silicon revision A and above) means?
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hello everyone,im doing code generation with c2000 devices,
when I make the model of 28377d to relocated 28335,im facing this choise :Remap ePWMs for DMA access (Requires silicon revision A and above)
whether i need to choise it? does there anyone have the same doubt?
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Accepted Answer
Venkatesh Chilapur
on 4 Jul 2019
Hi Xu,
You find DMA configuration under hardware Implementation pane:
![Capture.JPG](https://www.mathworks.com/matlabcentral/answers/uploaded_files/227553/Capture.jpeg)
More Answers (1)
Venkatesh Chilapur
on 4 Jul 2019
Hi Xu,
From device data sheet if the silicon version is >='A' then we have the following details.
"By default, ePWM and HRPWM registers are mapped to Peripheral Frame 1 (PF1). Table 6-4 shows this
configuration. To re-map the registers to Peripheral Frame 3 (PF3) to enable DMA access, bit 0 (MAPEPWM) of
MAPCNF register (address 0x702E) must be set to 1. Table 6-5 shows the remapped configuration" of section 6.2.3.
So to use DMA with ePWM module we need to enable the re-map.
HTH,
Regards,
Venkatesh C
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