Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet

32072H–AVR32–10/2012

The USART has the following interrupt sources: 

• LINSNRE: LIN Slave Not Responding Error

– A LIN Slave Not Responding Error has been detected 

• LINCE: LIN Checksum Error

– A LIN Checksum Error has been detected 

• LINIPE: LIN Identifier Parity Error

– A LIN Identifier Parity Error has been detected 

• LINISFE: LIN Inconsistent Sync Field Error

– The USART is configured as a Slave node and a LIN Inconsistent Sync Field Error 

has been detected since the last RSTSTA.

• LINBE: LIN Bit Error

– A Bit Error has been detected since the last RSTSTA.

• MANERR: Manchester Error

– At least one Manchester error has been detected since the last RSTSTA.

• CTSIC: Clear to Send Input Change Flag

– At least one change has been detected on the CTS pin since the last CSR read.

• DCDIC: Data Carrier Detect Input Change Flag

– A change has been detected on the DCD pin

• DSRIC: Data Set Ready Input Change Flag

– A change has been detected on the DSR pin 

• RIIC: Ring Indicator Input Change Flag

– A change has been detected on the RI pin

• LINTC: LIN Transfer Completed

– A LIN transfer has been completed

• LINIDR: LIN Identifier

– A LIN Identifier has been sent (master) or received (slave)

• NACK: Non Acknowledge

– At least one Non Acknowledge has been detected

• RXBUFF: Reception Buffer Full

– The Buffer Full signal from the Peripheral DMA Controller channel is active.

• ITER/UNRE: Max number of Repetitions Reached or SPI Underrun Error

– IF USART does not operate in SPI slave mode: Maximum number of repetitions has 

been reached since the last RSTSTA.

– If USART operates in SPI slave mode: At least one SPI underrun error has occurred 

since the last RSTSTA.

• TXEMPTY: Transmitter Empty

– There are no characters in neither THR, nor in the transmit shift register.

• TIMEOUT: Receiver Time-out

7

6

5

4

3

2

1

0

PARE

FRAME

OVRE

–

–

RXBRK

TXRDY

RXRDY