13 UART (UART3)
S1C31D50/D51 TECHNICAL MANUAL
Seiko Epson Corporation
13-15
(Rev. 2.00)
Bit 6
TENDIF
Bit 5
FEIF
Bit 4
PEIF
Bit 3
OEIF
Bit 2
RB2FIF
Bit 1
RB1FIF
Bit 0
TBEIF
These bits indicate the UART3 interrupt cause occurrence status.
1 (R):
Cause of interrupt occurred
0 (R):
No cause of interrupt occurred
1 (W):
Clear flag
0 (W):
Ineffective
The following shows the correspondence between the bit and interrupt:
UART3_
n
INTF.TENDIF bit: End-of-transmission interrupt
UART3_
n
INTF.FEIF bit:
Framing error interrupt
UART3_
n
INTF.PEIF bit:
Parity error interrupt
UART3_
n
INTF.OEIF bit:
Overrun error interrupt
UART3_
n
INTF.RB2FIF bit: Receive buffer two bytes full interrupt
UART3_
n
INTF.RB1FIF bit: Receive buffer one byte full interrupt
UART3_
n
INTF.TBEIF bit: Transmit buffer empty interrupt
UART3 Ch.
n
Interrupt Enable Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
UART3_nINTE
15–8 –
0x00
–
R
–
7
–
0
–
R
6
TENDIE
0
H0
R/W
5
FEIE
0
H0
R/W
4
PEIE
0
H0
R/W
3
OEIE
0
H0
R/W
2
RB2FIE
0
H0
R/W
1
RB1FIE
0
H0
R/W
0
TBEIE
0
H0
R/W
Bits 15–7 Reserved
Bit 6
TENDIE
Bit 5
FEIE
Bit 4
PEIE
Bit 3
OEIE
Bit 2
RB2FIE
Bit 1
RB1FIE
Bit 0
TBEIE
These bits enable UART3 interrupts.
1 (R/W): Enable interrupts
0 (R/W): Disable interrupts
The following shows the correspondence between the bit and interrupt:
UART3_
n
INTE.TENDIE bit: End-of-transmission interrupt
UART3_
n
INTE.FEIE bit:
Framing error interrupt
UART3_
n
INTE.PEIE bit:
Parity error interrupt
UART3_
n
INTE.OEIE bit:
Overrun error interrupt
UART3_
n
INTE.RB2FIE bit: Receive buffer two bytes full interrupt
UART3_
n
INTE.RB1FIE bit: Receive buffer one byte full interrupt
UART3_
n
INTE.TBEIE bit: Transmit buffer empty interrupt