External Wiring Diagram (Example); Example Of Bellcore-Compatible Telephone Circuit - Epson S1C05251 Technical Manual

5 ELECTRICAL CHARACTERISTICS

5.11 External Wiring Diagram (Example)

5.11.1 Example of Bellcore-Compatible Telephone Circuit

TIP
Protective
network
RING
Hook
switch
Communication
network
Receiver
Mute control DTMF tone
Note: The above circuit diagram is merely an example, and does not guarantee the operation of the
circuit.
∗ See Section 3.3, "Input Amp Circuit", for the R
28
500 pF
R
1
R
2
500 pF
R
4
R
7
0.2 µF 0.2 µF
270 kΩ
470 kΩ
33 kΩ
0.2 µF
Figure 5.11.1 Example of Bellcore-compatible telephone circuit
to R
1
R R
3 5
INP
INN
R
6
FB
CASIN
R
8
CASFB
V
REF
EXTREF
HOOK
RDIN
#RDRC
0.1 µF
#RDET
PDWN
#RESET
V
SS
values.
8
EPSON
S1C05251
V
DD
V
DD
1 µF
BPOUT
0.1 µF
CDIN
SDO
SDI
#SCLK
#IRQ
#DET
#PQUAL
MODE1
MODE0
EXTCLK
18 pF
OSC4
OSC3
18 pF
3.579545 MHz
S1C05251 TECHNICAL MANUAL