SPRUJ17I March 2022 – August 2025 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
In this section is described configuration and settings of FIFO trigger level, which enable DMA and interrupt generation.
| Step | Register/Bit Field/Programming Model | Value |
|---|---|---|
| Configure register submode TCR_TLR | see Table 13-101 | 0x- |
| Set the desire RX FIFO trigger level | UART_FCR[5-4] TX_FIFO_TRIG | 0x- |
| Set the desire TX FIFO trigger level | UART_FCR[7-6] RX_FIFO_TRIG | 0x- |
| Step | Register/Bit Field/Programming Model | Value |
|---|---|---|
| Configure register submode TCR_TLR | see Table 13-101 | 0x- |
| Set the desire RX FIFO trigger level | UART_TLR[7-4] RX_FIFO_TRIG_DMA | 0x- |
| Set the desire TX FIFO trigger level | UART_TLR[3-0] TX_FIFO_TRIG_DMA | 0x- |
| Step | Register/Bit Field/Programming Model | Value |
|---|---|---|
| Configure register submode TCR_TLR | see Table 13-101 | 0x- |
| Set the register bit | UART_SCR[7] RX_TRIG_GRANU1 | 1 |
| Set the desire RX FIFO trigger level | UART_TLR[7-4] RX_FIFO_TRIG_DMA | 0x- |
| UART_FCR[7-6] RX_FIFO_TRIG | ||
| Set the register bit | UART_SCR[6] TX_TRIG_GRANU1 | 1 |
| Set the desire TX FIFO trigger level | UART_TLR[3-0] TX_FIFO_TRIG_DMA | 0x- |
| UART_FCR[5-4] TX_FIFO_TRIG |