SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
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 24-119 | 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 24-119 | 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 24-119 | 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 |