25.5.13 IRCOM Transmitter Pulse Length Control Register
| Name: | TXPLCTRL |
| Offset: | 0x0D |
| Reset: | 0x00 |
| Property: | - |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| TXPL[7:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Bits 7:0 – TXPL[7:0] Transmitter Pulse Length
The 8-bit value sets the pulse modulation scheme for the transmitter. Setting this register will have effect only if IRCOM mode is selected by a USART. By leaving this register value to zero, 3/16 of the baud rate period pulse modulation is used. Setting this value from 1 to 254 will give a fixed pulse length coding. The 8-bit value sets the number of system clock periods for the pulse. The start of the pulse will be synchronized with the rising edge of the baud rate clock. Setting the value to 255 (0xFF) will disable pulse coding, letting the RX and TX signals pass through the IRCOM module unaltered. This enables other features through the IRCOM module, such as half-duplex USART, Loop-back testing, and USART RX input from an event channel.
TXPL must be configured before the USART transmitter is enabled (TXEN).