SPRZ488E March 2022 – May 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
USART Spurious DMA Interrupts
Spurious DMA interrupts may occur when DMA is used to access TX/RX FIFO with a non-power-of-2 trigger level in the TLR register.
Use power of 2 values for TX/RX FIFO trigger levels (1, 2, 4, 8, 16, and 32).