User manual
...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 513
www.energymicro.com
Bit Name Reset Access Description
Set when a multi-processor address frame is detected.
7 FERR 0 R Framing Error Interrupt Flag
Set when a frame with a framing error is received while RXBLOCK is cleared.
6 PERR 0 R Parity Error Interrupt Flag
Set when a frame with a parity error is received while RXBLOCK is cleared.
5 TXOF 0 R TX Overflow Interrupt Flag
Set when a write is done to the transmit buffer while it is full. The data already in the transmit buffer is preserved.
4 RXUF 0 R RX Underflow Interrupt Flag
Set when trying to read from the receive buffer when it is empty.
3 RXOF 0 R RX Overflow Interrupt Flag
Set when data is incoming while the receive shift register is full. The data previously in shift register is overwritten by the new data.
2 RXDATAV 0 R RX Data Valid Interrupt Flag
Set when data becomes available in the receive buffer.
1 TXBL 1 R TX Buffer Level Interrupt Flag
Set when space becomes available in the transmit buffer for a new frame.
0 TXC 0 R TX Complete Interrupt Flag
Set after a transmission when both the TX buffer and shift register are empty.
19.5.13 LEUARTn_IFS - Interrupt Flag Set Register
Offset Bit Position
0x030
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset
0
0
0
0
0
0
0
0
0
Access
W1
W1
W1
W1
W1
W1
W1
W1
W1
Name
SIGF
STARTF
MPAF
FERR
PERR
TXOF
RXUF
RXOF
TXC
Bit Name Reset Access Description
31:11 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
10 SIGF 0 W1 Set Signal Frame Interrupt Flag
Write to 1 to set the SIGF interrupt flag.
9 STARTF 0 W1 Set Start Frame Interrupt Flag
Write to 1 to set the STARTF interrupt flag.
8 MPAF 0 W1 Set Multi-Processor Address Frame Interrupt Flag
Write to 1 to set the MPAF interrupt flag.
7 FERR 0 W1 Set Framing Error Interrupt Flag
Write to 1 to set the FERR interrupt flag.
6 PERR 0 W1 Set Parity Error Interrupt Flag
Write to 1 to set the PERR interrupt flag.
5 TXOF 0 W1 Set TX Overflow Interrupt Flag
Write to 1 to set the TXOF interrupt flag.
4 RXUF 0 W1 Set RX Underflow Interrupt Flag
Write to 1 to set the RXUF interrupt flag.
3 RXOF 0 W1 Set RX Overflow Interrupt Flag