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TEA7092 Datasheet(PDF) 2 Page - STMicroelectronics

Part # TEA7092
Description  TELEPHONE SET INTEGRATED CIRCUIT
PDF  57 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TEA7092 Datasheet(HTML) 2 Page - STMicroelectronics

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CONTENTS (continued)
Pages
IV.
MICROCONTROLLER INTERFACE . ... ... ... .... ... ... ... ... ... . . . . . . . ...
39
IV.1.
MICROCONTROLLER POWER SUPPLY . . . . . . .... ... ... ... ... ... ... .... ...
39
IV.2.
RESET AND PON SIGNALS . . . . . . .... . . . . . . . . . . . . . . . .... .. . . . . . . . ... . . . .
39
IV.3.
SERIAL BUS INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... ... ... ... . . . .
41
IV.3.1.
Different Codes . ..... .. . . . . . . . . . . . .. ... ... .... ... ... ... ... ... ... .... ...
41
IV.3.2.
Software Example . . . . . . . . . . . . . . . . ... ... ... .... ... ... ... ... ... ... .... ...
45
IV.3.3.
Serial Bus Codes Actions on Switches . . . . . . . . . .... ... ... ... ... ... .... . . . ...
46
IV.4.
RING INDICATOR / LINE CURRENT VARIATION INDICATOR . . . . . . . . . . . . . . . . . .
47
IV.5.
OSCILLATOR . . . .... ... .. . . . . . . . ... ... ... .... ... ... ... ... ... ... .... ...
47
IV.6.
MICROCONTROLLER SIGNAL CONTROL IN THE DIFFERENT MODES. . . . . . . . . .
47
V.
DIALER FEATURES . . . . . . . . . . . . . . . . . . . . . . .... ... ... ... ... ... ... .... ...
48
V.1.
DTMF DIALER . ..... .. . . . . . . . . . . . .. ... ... .... ... ... ... ... ... ... .... ...
48
V.2.
SINE WAVE GENERATOR. . . . . . . . . ... ... ... .... ... ... ... ... ... ... .... ...
49
V.3.
PULSE DIALER INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... ... ... .... .. .
49
VI.
RINGER FEATURES . . . . . . . . . . . . . . . . . . . . . . .... ... ... ... ... ... ... .... ...
50
VI.1.
RINGER POWER SUPPLY. . . . . . . . .... ... ... . . . . ... ... ... . . . . . . . . . . . . . ...
50
VI.2.
START UP THRESHOLD LEVEL . . . . . . . . . . . . . .... ... ... ... ... ... ... .... ...
50
VI.3.
RING FREQUENCY GENERATOR . ..... . . . . . . . . . . . . . . . . . . . . . . . . ... ... . . . .
51
VI.4.
OUTPUT POWER OPTIMIZATION . . . . . . . . . . . .... ... ... ... ... ... ... .... ...
51
VI.4.1.
Switch Mode Power Supply Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... ... .. . .
51
VI.4.2.
Switch Mode Power Supply Losses . . . . . . . . . . . .... ... ... ... ... ... ... .... ...
52
VI.4.3.
Output Power Adjustment . . . . . . . . . .... ... .... .. . . . . . . . ... .. . . . . . . . . . . . . . .
53
VI.5.
MICROCONTROLLER MANAGEMENT. . . . . . . . . . . . . . . . . . . . . ... ... ... .... .. .
54
VI.6.
RING SOFTWARE . . . . . . . . . . . . . . . ... ... ... .... ... ... ... ... ... ... .... ...
55
VII.
APPLICATION DIAGRAM ... ... .. .... ... ... . . . .... ... ... .. . . . . . . . . . . ....
56
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