25 R/F COnVeRTeR (RFC)
25-12
Seiko epson Corporation
S1C17624/604/622/602/621 TeChniCal Manual
RFC Time Base Counter low and high Registers (RFC_TCl, RFC_TCh)
Register name address
Bit
name
Function
Setting
init. R/W
Remarks
RFC Time Base
Counter low
Register
(RFC_TCl)
0x53a8
(16 bits)
D15–0 TC[15:0]
Time base counter low-order 16-
bit data
0x0–0xffff
0x0 R/W
RFC Time Base
Counter high
Register
(RFC_TCh)
0x53aa
(16 bits)
D15–8 –
reserved
–
–
–
0 when being read.
D7–0 TC[23:16]
Time base counter high-order
8-bit data
0x0–0xff
0x0 R/W
D[7:0]/RFC_TCh, D[15:0]/RFC_TCl
TC[23:0]: Time Base Counter Bits
Time base counter data can be read and written to. (Default: 0x0)
note: The time base counter must be set from the low-order value (TC[15:0]/RFC_TCL register) first.
The counter may not be set to the correct value if the high-order value (TC[23:16]/RFC_TCH reg-
ister) is written first.
RFC interrupt Mask Register (RFC_iMSK)
Register name address
Bit
name
Function
Setting
init. R/W
Remarks
RFC interrupt
Mask Register
(RFC_iMSK)
0x53ac
(16 bits)
D15–5 –
reserved
–
–
–
0 when being read.
D4
OVTCie
TC overflow error interrupt enable
1 Enable
0 Disable
0
R/W
D3
OVMCie
MC overflow error interrupt enable 1 Enable
0 Disable
0
R/W
D2
eSenBie
Sensor B oscillation completion
interrupt enable
1 Enable
0 Disable
0
R/W
D1
eSenaie
Sensor A oscillation completion
interrupt enable
1 Enable
0 Disable
0
R/W
D0
eReFie
Reference oscillation completion
interrupt enable
1 Enable
0 Disable
0
R/W
D[15:5] Reserved
D4
OVTCie: TC Overflow error interrupt enable Bit
Enables or disables time base counter overflow error interrupts.
1 (R/W): Interrupt enabled
0 (R/W): Interrupt disabled (default)
D3
OVMCie: MC Overflow error interrupt enable Bit
Enables or disables measurement counter overflow error interrupts.
1 (R/W): Interrupt enabled
0 (R/W): Interrupt disabled (default)
D2
eSenBie: Sensor B Oscillation Completion interrupt enable Bit
Enables or disables sensor B oscillation completion interrupts.
1 (R/W): Interrupt enabled
0 (R/W): Interrupt disabled (default)
D1
eSenaie: Sensor a Oscillation Completion interrupt enable Bit
Enables or disables sensor A oscillation completion interrupts.
1 (R/W): Interrupt enabled
0 (R/W): Interrupt disabled (default)
D0
eReFie: Reference Oscillation Completion interrupt enable Bit
Enables or disables reference oscillation completion interrupts.
1 (R/W): Interrupt enabled
0 (R/W): Interrupt disabled (default)