Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105 Data Sheet
Product codes
ATEVK1105
330
AT32UC3A
shows an example of character transmission.
Figure 26-34.
IrDA Modulation
26.7.6.2
IrDA Baud Rate
gives some examples of CD values, baud rate error and pulse dura-
tion. Note that the requirement on the maximum acceptable error of ±1.87% must be met.
38.4 Kb/s
4.88 µs
57.6 Kb/s
3.26 µs
115.2 Kb/s
1.63 µs
Table 26-9.
IrDA Pulse Duration
Baud Rate
Pulse Duration (3/16)
Bit Period
3 Bit Period
16
Start
Bit
Data Bits
Stop
Bit
0
0
0
0
0
1
1
1
1
1
Transmitter
Output
TXD
Table 26-10.
IrDA Baud Rate Error
Peripheral Clock
Baud Rate
CD
Baud Rate Error
Pulse Time
3 686 400
115 200
2
0.00%
1.63
20 000 000
115 200
11
1.38%
1.63
32 768 000
115 200
18
1.25%
1.63
40 000 000
115 200
22
1.38%
1.63
3 686 400
57 600
4
0.00%
3.26
20 000 000
57 600
22
1.38%
3.26
32 768 000
57 600
36
1.25%
3.26
40 000 000
57 600
43
0.93%
3.26
3 686 400
38 400
6
0.00%
4.88
20 000 000
38 400
33
1.38%
4.88
32 768 000
38 400
53
0.63%
4.88
40 000 000
38 400
65
0.16%
4.88
3 686 400
19 200
12
0.00%
9.77
20 000 000
19 200
65
0.16%
9.77
32 768 000
19 200
107
0.31%
9.77
40 000 000
19 200
130
0.16%
9.77
32058K
AVR32-01/12