Datasheet

535
SAM9263 [DATASHEET]
Atmel-6249N-ATARM-SAM9263-Datasheet_14-Mar-16
33.6.5.1 IrDA Modulation
For baud rates up to and including 115.2 kbit/s, the RZI modulation scheme is used. “0” is represented by a light
pulse of 3/16th of a bit time. Some examples of signal pulse duration are shown in Table 33-9.
Figure 33-24 shows an example of character transmission.
Figure 33-24. IrDA Modulation
Table 33-9. IrDA Pulse Duration
Baud Rate Pulse Duration (3/16)
2.4 kbit/s 78.13 µs
9.6 kbit/s 19.53 µs
19.2 kbit/s 9.77 µs
38.4 kbit/s 4.88 µs
57.6 kbit/s 3.26 µs
115.2 kbit/s 1.63 µs
Bit Period
Bit Period
3
16
Start
Bit
Data Bits
Stop
Bit
0
0
0
0
0
1
11
1
1
Transmitter
Output
TXD