AT91RM3400-DK Atmel, AT91RM3400-DK Datasheet - Page 282

• Manufacturer Part Number: AT91RM3400-DK
• Description: KIT DEV FOR AT91RM3400
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91RM3400-DK

• Contents: Evaluation Board, Software and Documentation
• Processor To Be Evaluated: AT91RM3400
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• For Use With/related Products: AT91RM3400
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Framing Error
282
AT91RM3400
Table 50. Maximum Time-out Period
The receiver is capable of detecting framing errors. A framing error happens when the stop bit
of a received character is detected at level 0. This can occur if the receiver and the transmitter
are fully desynchronized.
A framing error is reported on the FRAME bit of the Channel Status Register (US_CSR). The
FRAME bit is asserted in the middle of the stop bit as soon as the framing error is detected. It
is cleared by writing the Control Register (US_CR) with the RSTSTA bit at 1.
Figure 103. Framing Error Status
Baud Rate
Baud Rate
200000
bit/sec
14400
19200
28800
33400
56000
57600
FRAME
RXRDY
US_CR
1 200
2 400
4 800
9 600
600
Clock
Write
RXD
Start
Bit
D0
D1
D2
D3
D4
Bit Time
1 667
D5
833
417
208
104
µs
69
52
35
30
18
17
5
D6
D7
Parity
Bit
Stop
Bit
RSTSTA = 1
Time -out
109 225
54 613
27 306
13 653
6 827
4 551
3 413
2 276
1 962
1 170
1 138
328
ms
1790A–ATARM–11/03