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HT95R45 Datasheet(PDF) 56 Page - Holtek Semiconductor Inc

Part # HT95R45
Description  Phone 8-Bit MCU with DTMF Receiver & CPT
PDF  76 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT95R45 Datasheet(HTML) 56 Page - Holtek Semiconductor Inc

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HT95R45
Rev. 1.00
56
March 12, 2010
U.S.A. Call Progress Tone Signal Format
Tone
Frequency
Condition
Precision Dial Tone
350Hz+440Hz
Continuous high
Old Dial Tone
120Hz (or 133Hz, ..) +600Hz
Continuous high
Precision Busy Tone
480Hz+620Hz
0.5sec high and 0.5sec low
Old Busy Tone
120Hz+600Hz
0.5sec high and 0.5sec low
Precision Reorder Tone
480Hz+620Hz
0.3sec high and 0.2sec low
Old Reorder Tone
120Hz+600Hz
0.2sec high and 0.3sec low or
0.25sec high and 0.25sec low
Precision Ring-back Tone
440Hz+480Hz
2sec high and 4sec low
Old Ring-back Tone
40Hz (or the others) +420Hz
2sec high and 4sec low
Timing Diagram
C P T S I N
C P T X 1 , C P T X 2
t R D
t B
t D D
t Q I
t D H
t D L
t S T
C P T E N
C P T E N V



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