When using Command_Response SPI, is it necessary to use DMA on MCU side? June 19, 2015 20:18 GainSpan FAQ HelpDesk Technical FAQs Software, Modes of Operation, Interfaces, Modules, Code, Data Rates, etc. No need to use DMA on MCU side. GS uses DMA for Tx/Rx, which can be handled by normal SPI READ/WRITE on MCU