13-17
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
UART3 Ch.
n
Status and Interrupt Flag Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
UART3_
n
INTF
15
–
10
–
0x00
–
R
–
9
RBSY
0
H0/S0
R
8
TBSY
0
H0/S0
R
7
–
0
–
R
6
TENDIF
0
H0/S0
R/W
Cleared by writing 1.
5
FEIF
0
H0/S0
R/W
Cleared by writing 1 or reading the
UART3_
n
RXD register.
4
PEIF
0
H0/S0
R/W
3
OEIF
0
H0/S0
R/W
Cleared by writing 1.
2
RB2FIF
0
H0/S0
R
Cleared by reading the UART3_
n
RXD
register.
1
RB1FIF
0
H0/S0
R
0
TBEIF
1
H0/S0
R
Cleared by writing to the UART3_
n
TXD register.
Bits 15
–
10 Reserved
Bit 9
RBSY
This bit indicates the receiving status. (See Figure 13.5.3.1.)
1 (R): During sending
0 (R): Idle
Bit
8
TBSY
This bit indicates the sending status. (See Figure 13.5.2.1.)
1 (R): During sending
0 (R): Idle
Bit 7
Reserved
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
Summary of Contents for S1C31D50
Page 461: ...25 1 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 25 Package TQFP12 48PIN ...
Page 462: ...25 2 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP13 64PIN ...
Page 463: ...25 3 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 TQFP14 80PIN ...
Page 464: ...25 4 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP15 100PIN ...