in the RT1020 reference manual you can find the following explanations for FlexSPI IP TX/RX watermark levels
- What does "DMA request whenn filling level is no less than Watermark level" mean? And why is the description for TX/RX the same? Shouldn't it be something like "if TX FIFO count is less or equal to TXWMRK a DMA request will be generated" and for RX "if RX FIFO count is equal or greater than RXWMRK a DMA request will be generated".
- When will DMA request be generated?
- What is a write window?