Texas Instruments MSP430x4xx - Manual (Page 281)

USART Registers: UART Mode
14-24 USART Peripheral Interface, UART Mode
UxRCTL, USART Receive Control Register
7 6 5 4 3 2 1 0
FE PE OE BRK URXEIE URXWIE RXWAKE RXERR
rw−0 rw−0 rw−0 rw−0 rw−0 rw−0 rw−0 rw−0
FE Bit 7 Framing error flag
0
No error
1 Character received with low stop bit
PE Bit 6 Parity error flag. When PENA = 0, PE is read as 0.
0
No error
1 Character received with parity error
OE Bit 5 Overrun error flag. This bit is set when a character is transferred into
UxRXBUF before the previous character was read.
0
No error
1 Overrun error occurred
BRK Bit 4 Break detect flag
0
No break condition
1 Break condition occurred
URXEIE Bit 3 Receive erroneous-character interrupt-enable
0
Erroneous characters rejected and URXIFGx is not set
1 Erroneous characters received will set URXIFGx
URXWIE Bit 2 Receive wake-up interrupt-enable. This bit enables URXIFGx to be set
when an address character is received. When URXEIE = 0, an address
character will not set URXIFGx if it is received with errors.
0
All received characters set URXIFGx
1 Only received address characters set URXIFGx
RXWAKE Bit 1 Receive wake-up flag
0
Received character is data
1 Received character is an address
RXERR Bit 0 Receive error flag. This bit indicates a character was received with error(s).
When RXERR = 1, on or more error flags (FE,PE,OE, BRK) is also set.
RXERR is cleared when UxRXBUF is read.
0
No receive errors detected
1 Receive error detected