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SM8223A Datasheet(PDF) 7 Page - Nippon Precision Circuits Inc

Part # SM8223A
Description  FSK Decoder and DTMF Receiver IC
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Manufacturer  NPC [Nippon Precision Circuits Inc]
Direct Link  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM8223A Datasheet(HTML) 7 Page - Nippon Precision Circuits Inc

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SM8223A
NIPPON PRECISION CIRCUITS—7
OSCIN input timing (when external input)
FSK receive timing (1)
FSK receive timing (2)
tWL
tWH
tf
tr
OSCIN
VDD
VSS
1010101... 111...
Data
1st Ring
2nd Ring
Data
Tip/Ring
DOUT
OSCOUT
tDED
tAF
tHF
tADD
tDPD
tDOSC
Ch. seizure Mark Data packet
Data output has
no Ch.seizure signal.
RDET
DV
PDWN
FSK/DTMF
0
b0 b1 b2 b3 b4 b5 b6 b7
1
0
b0 b1
b6 b7
1
b4 b5 b6 b7
b0 b1 b2 b3 b4 b5 b6 b7
b0 b1
Tip/Ring
DOUT
MSB Stop bit
10
10
LSB
Start bit
tADD


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