ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 716

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

35.7.5.2
716
716
SAM3U Series
SAM3U Series
IrDA Baud Rate
Figure 35-33
Figure 35-33. IrDA Modulation
Table 35-13
the requirement on the maximum acceptable error of ±1.87% must be met.
Table 35-13. IrDA Baud Rate Error
Peripheral Clock
3 686 400
20 000 000
32 768 000
40 000 000
3 686 400
20 000 000
32 768 000
40 000 000
3 686 400
20 000 000
32 768 000
40 000 000
3 686 400
20 000 000
32 768 000
40 000 000
3 686 400
20 000 000
32 768 000
40 000 000
gives some examples of CD values, baud rate error and pulse duration. Note that
shows an example of character transmission.
Transmitter
Output
TXD
Baud Rate
115 200
115 200
115 200
115 200
57 600
57 600
57 600
57 600
38 400
38 400
38 400
38 400
19 200
19 200
19 200
19 200
9 600
9 600
9 600
9 600
Bit Period
Start
Bit
0
1
0
107
130
130
213
260
CD
11
18
22
22
36
43
33
53
65
12
65
24
1
2
4
6
Data Bits
0
0
Baud Rate Error
1
0.00%
1.38%
1.25%
1.38%
0.00%
1.38%
1.25%
0.93%
0.00%
1.38%
0.63%
0.16%
0.00%
0.16%
0.31%
0.16%
0.00%
0.16%
0.16%
0.16%
1
16
3
0
Bit Period
Stop
6430D–ATARM–25-Mar-11
6430D–ATARM–25-Mar-11
Bit
1
Pulse Time
19.53
19.53
19.53
19.53
1.63
1.63
1.63
1.63
3.26
3.26
3.26
3.26
4.88
4.88
4.88
4.88
9.77
9.77
9.77
9.77