18 R/F CONVERTER (RFC)
S1C17M20/M21/M22/M23/M24/M25
Seiko Epson Corporation
18-11
TECHNICAL MANUAL (Rev. 1.0)
RFC Ch.
n
Interrupt Flag Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
RFCnINTF
15–8 –
0x00
–
R
–
7–5 –
0x0
–
R
4
OVTCIF
0
H0
R/W Cleared by writing 1.
3
OVMCIF
0
H0
R/W
2
ESENBIF
0
H0
R/W
1
ESENAIF
0
H0
R/W
0
EREFIF
0
H0
R/W
Bits 15–5 Reserved
Bit 4
OVTCIF
Bit 3
OVMCIF
Bit 2
ESENBIF
Bit 1
ESENAIF
Bit 0
EREFIF
These bits indicate the RFC 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:
RFC
n
INTF.OVTCIF bit: Time base counter overflow error interrupt
RFC
n
INTF.OVMCIF bit: Measurement counter overflow error interrupt
RFC
n
INTF.ESENBIF bit: Sensor B oscillation completion interrupt
RFC
n
INTF.ESENAIF bit: Sensor A oscillation completion interrupt
RFC
n
INTF.EREFIF bit: Reference oscillation completion interrupt
RFC Ch.
n
Interrupt Enable Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
RFCnINTE
15–8 –
0x00
–
R
–
7–5 –
0x0
–
R
4
OVTCIE
0
H0
R/W
3
OVMCIE
0
H0
R/W
2
ESENBIE
0
H0
R/W
1
ESENAIE
0
H0
R/W
0
EREFIE
0
H0
R/W
Bits 15–5 Reserved
Bit 4
OVTCIE
Bit 3
OVMCIE
Bit 2
ESENBIE
Bit 1
ESENAIE
Bit 0
EREFIE
These bits enable RFC interrupts.
1 (R/W): Enable interrupts
0 (R/W): Disable interrupts
The following shows the correspondence between the bit and interrupt:
RFC
n
INTE.OVTCIE bit: Time base counter overflow error interrupt
RFC
n
INTE.OVMCIE bit: Measurement counter overflow error interrupt
RFC
n
INTE.ESENBIE bit: Sensor B oscillation completion interrupt
RFC
n
INTE.ESENAIE bit: Sensor A oscillation completion interrupt
RFC
n
INTE.EREFIE bit: Reference oscillation completion interrupt