Hi，
Regarding am62x, I have several questions that I would like to inquire about.
1. Does the M4 core timer have PWM functionality? The manual mentions it, but I couldn't find relevant function interfaces in the IDE. I want to use it to generate a 20us control signal; using interrupts is not very efficient.
2. Does the M4 core's SPI support DMA functionality? The manual mentions it, but the IDE indicates that it cannot be used.
3. I'm using SPI with an interrupt callback method for reading. I initiate the SPI read in a 20us period interrupt and call `MCSPI_transfer()` to start the interrupt callback read. However, I've found that executing this function takes about 5~6us. Are there more efficient ways to do this?
