Block Diagram; Pin Assignment - Epson S1C05251 Technical Manual

1 OVERVIEW

1.2 Block Diagram

INN
INP
FB
CASIN
CASFB
V
REF
EXTREF
Amp( )
HOOK
#RDET
#RDRC
RDIN
V
DD
V
SS

1.3 Pin Assignment

SOP2-28pin
1
14
No. Pin name
1
2
3
4 CASIN
5 CASFB
6
7 EXTREF
2
BPOUT
–
Band-pass
Amp
filter
+
CAS tone
–
filter
Amp
+
(MODE0 ∗ SEL)
V /2
DD
–
+
V
DD
Timing generator
EXTCLK OSC3 OSC4
Figure 1.2.1 Block diagram
28
S1C05251
15
No. Pin name
INP 8 HOOK
INN 9 RDIN
FB 10 #RDRC
11 #RDET
12 PDWN
V 13 #RESET
REF
14 V
SS
Figure 1.3.1 Pin assignment
CDIN
Data/timing
FSK
recovery
demodulator
circuit
Identification Detection
circuit circuit
Interrupt
control circuit
(MODE1)
To other blocks
Control circuit
PDWN #RESET MODE0
DIP-28pin
1
S1C05251
14
No. Pin name
15 OSC3
16 OSC4
17 EXTCLK
18 MODE0
19 MODE1
20 #PQUAL
21 #DET
EPSON
SDO
#DET
#PQUAL
#IRQ
SDI
#SCLK
MODE1
28
15
No. Pin name
22 #IRQ
23 #SCLK
24 SDI
25 SDO
26 CDIN
27 BPOUT
28 V
DD
S1C05251 TECHNICAL MANUAL