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FX623 Datasheet(PDF) 4 Page - List of Unclassifed Manufacturers

Part # FX623
Description  Call Progress Tone Decoder
PDF  6 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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Logo ETC - List of Unclassifed Manufacturers

FX623 Datasheet(HTML) 4 Page - List of Unclassifed Manufacturers

  FX623 Datasheet HTML 1Page - List of Unclassifed Manufacturers FX623 Datasheet HTML 2Page - List of Unclassifed Manufacturers FX623 Datasheet HTML 3Page - List of Unclassifed Manufacturers FX623 Datasheet HTML 4Page - List of Unclassifed Manufacturers FX623 Datasheet HTML 5Page - List of Unclassifed Manufacturers FX623 Datasheet HTML 6Page - List of Unclassifed Manufacturers  
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4
Application Information
Decoder Timing
t
RESP
t
DE
V
DD
NOTONE
NOTONE
OUTPUTS
Q0 to Q3
DATA CHANGE
SIGNAL IN
Tone 1
Tone 2
Tone 3
Tone ’N’
’N’
HOLD
t PURS
PURS
t NT
t DC
HOLD
t
NORM
t
PUL
t
V
DD
SIGNAL IN
OUTPUTS
Q0 - Q3
DATA OUT Q0 - Q3
(INTERNAL)
DATA CHANGE
IRQ
CS
NOTONE
TRI-STATE
TRI-STATE
VALID DATA
(READ DATA)
VALID DATA
(READ DATA)
Tone 1
RIRQ
t
IR
t
ACS
t
HIZ
t
EF
1
t PURS
PURS
Fig.4 Timing with the HOLD Input Held “High”;
CS and IRQ are used
Fig.3 Timing with the Chip Select Input Held “Low”;
CS and IRQ are not used



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