SPRZ536B September 2022 – July 2024 AM69 , AM69A , TDA4AH-Q1 , TDA4AP-Q1 , TDA4APE-Q1 , TDA4VH-Q1 , TDA4VP-Q1 , TDA4VPE-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).