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Part Name
Description
SM8224CM View Datasheet(PDF) - Nippon Precision Circuits
Part Name
Description
Manufacturer
SM8224CM
Dual-Tone Receiver IC
Nippon Precision Circuits
SM8224CM Datasheet PDF : 11 Pages
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TIMING DIAGRAMS
FSK demodulator timing
L1/L2
1st Ring
SM8224C
101010... 1 Data
2nd Ring
PDWN
CDET
DOUT
t
DAQ
t
DCH
101010...1
Data
OSCOUT
t
DOSC
PDWN is an internal signal (set by S0, S1, MODE)
Output timing
DOUT
DOUT
t
r0
90%
10%
t
f0
STR
STR
t
f0
90%
10%
t
r0
Data timing
TIP/RING
DOUT
STOP START
STOP START
b6 b7 1 0 b0
b1
b2 b3 b4 b5 b6 b7 1 0 b0 b1 b2 b3 b4 b5 b6
t
IDD
b4 b5 b6 b7
START
b0
b1
b2 b3 b4 b5 b6 b7
b0 b1 b2 b3 b4
STOP
SEIKO NPC CORPORATION —8
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