ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 706
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
ATSAM3S-EK
Manufacturer Part Number
ATSAM3S-EK
Description
KIT EVAL FOR ATSAM3S4C
Manufacturer
Atmel
Series
SAM3Sr
Type
MCUr
Specifications of ATSAM3S-EK
Contents
Board, Cables, Power Supply
Silicon Manufacturer
Atmel
Core Architecture
ARM
Core Sub-architecture
Cortex-M3
Kit Contents
Board
Features
TFT Colour LCD Display, SD/MMC Interface
Svhc
No SVHC (15-Dec-2010)
Rohs Compliant
Yes
For Use With/related Products
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATSAM3S-EK
Manufacturer:
Atmel
Quantity:
135
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33.7.5.3
Figure 33-35. IrDA Demodulator Operations
706
706
Receiver
Counter
Value
Input
MCK
RXD
SAM3S Preliminary
SAM3S Preliminary
IrDA Demodulator
6
Rejected
5
Pulse
4
Table 33-13. IrDA Baud Rate Error (Continued)
The demodulator is based on the IrDA Receive filter comprised of an 8-bit down counter which is
loaded with the value programmed in US_IF. When a falling edge is detected on the RXD pin,
the Filter Counter starts counting down at the Master Clock (MCK) speed. If a rising edge is
detected on the RXD pin, the counter stops and is reloaded with US_IF. If no rising edge is
detected when the counter reaches 0, the input of the receiver is driven low during one bit time.
Figure 33-35
As the IrDA mode uses the same logic as the ISO7816, note that the FI_DI_RATIO field in
US_FIDI must be set to a value higher than 0 in order to assure IrDA communications operate
correctly.
Peripheral Clock
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
3
2
6
illustrates the operations of the IrDA demodulator.
6
5
Baud Rate
4
Accepted
57 600
38 400
38 400
38 400
38 400
19 200
19 200
19 200
19 200
Pulse
9 600
9 600
9 600
9 600
2 400
2 400
2 400
3
2
1
0
107
130
130
213
260
521
853
CD
43
33
53
65
12
65
24
96
6
Baud Rate Error
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%
0.00%
0.03%
0.04%
6500C–ATARM–8-Feb-11
6500C–ATARM–8-Feb-11
Pulse Time
19.53
19.53
19.53
19.53
78.13
78.13
78.13
3.26
4.88
4.88
4.88
4.88
9.77
9.77
9.77
9.77
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