SPRUJ17I March 2022 – August 2025 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
The following programming model explains how to program the module to transmit an IrDA 6-byte frame with no parity, baud rate = 115.2 kbps, FIFOs disabled, 3/16 encoding, 2 stop-bits, and 7-bit word length:
| Step | Register/Bit Field/Programming Model | Value |
|---|---|---|
| Disable UART mode | UART_MDR1[2-0] MODE_SELECT | 0x7 |
| Grant access to the UART_DLL and UART_DLH registers | UART_LCR[7-0] | 0x80 |
| Load the baud rate (115.2 Kbps) | UART_DLL[7-0] CLOCK_LSB | 0x1A |
| UART_DLH[5-0] CLOCK_MSB | 0x00 | |
| Set SIR mode | UART_MDR1[2-0] MODE_SELECT | 0x1 |
| Disable access to the UART_DLL and UART_DLH registers | UART_LCR[7-0] | 0x00 |
| Force output DTR to active | UART_MCR[0] DTR | 1 |
| Enable the UART_THR interrupt | UART_IER_IRDA[1] THR_IT | 0x1 |
| Set transmit frame length to 6 bytes | UART_TXFLL[7-0] TXFLL | 0x06 |
| Set the seven starts of frame transmission | UART_EBLR[7-0] EBLR | 0x08 |
| Set SIR pulse width to be 1.6 μs | UART_ACREG[7] PULSE_TYPE | 1 |