TEA7092TQ Просмотр технического описания (PDF) - STMicroelectronics
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TEA7092TQ Datasheet PDF : 24 Pages
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TEA7092
MICROCONTROLLER INTERFACE (continued)
Programmable Divider for Ring Frequencies
Ring Frequencies
Ring Frequencies
Fi codes (Hz) / * Notes (Hz)
Fi codes (Hz) / * Notes (Hz)
Divider
Codes
n
26321 23551 21308 19455 Divider
000XX10 000XX11 000XX00 000XX01 Codes
n
26321 23551 21308 19455
000XX10 000XX11 000XX00 000XX01
1010000 16
1010001 17
1010010 18
1010011 19
1010100 20
1010101 21
1010110 22
1010111 23
1011000 24
1011001 25
1011010 26
1011011 27
1011100 28
1011101 29
1011110 30
1011111 31
1100000 32
1100001 33
1100010 34
1100011 35
1100100 36
1100101 37
1100110 38
1100111 39
1645
1548.3
1462.3
1385.3
1316
1253.4
1196.4
1144.4
1096.7
1052.8
1012.3
974.8
940
907.6
* 877.4
849.1
822.5
797.6
774.1
752
731.1
711.4
692.7
674.9
1471.9
1385.3
1308.4
1239.5
1177.5
1121.5
1070.5
1024
981.3
942
905.8
872.3
841.1
812.1
* 785
759.7
* 736
713.7
692.7
672.9
654.2
636.5
* 619.8
603.9
1331.7
1253.4
1183.8
1121.5
1065.4
1014.7
968.5
926.4
887.8
852.3
819.5
789.2
761
734.8
710.3
687.3
665.9
645.7
626.7
608.8
591.9
575.9
560.7
546.4
1215.9
1144.4
1080.8
1023.9
972.7
926.4
884.3
845.9
810.6
778.2
748.3
720.6
* 694.8
670.9
648.5
627.6
608
589.5
572.2
* 555.9
540.4
525.8
512
498.8
1101000 40
1101001 41
1101010 42
1101011 43
1101100 44
1101101 45
1101110 46
1101111 47
1110000 48
1110001 49
1110010 50
1110011 51
1110100 52
1110101 53
1110110 54
1110111 55
1111000 56
1111001 57
1111010 58
1111011 59
1111100 60
1111101 61
1111110 62
1111111 63
* 658
642
626.7
612.1
598.2
584.9
572.2
560
548.3
537.2
526.4
516.1
506.2
496.6
487.4
478.6
470
461.8
453.8
446.1
* 438.7
431.5
424.5
417.8
* 588.8
574.4
560.7
547.7
535.2
* 523.4
512
501.1
490.6
480.6
471
461.8
452.9
444.4
436.1
428.2
420.5
413.2
406
399.2
* 392.5
386.1
379.8
373.8
532.7
519.7
507.3
* 495.5
484.3
473.5
* 463.2
453.4
443.9
434.9
426.2
417.8
409.8
402
394.6
387.4
380.5
373.8
* 367.4
361.1
355.1
* 349.3
343.7
338.2
486.4
474.5
463.2
452.4
442.2
432.3
422.9
* 413.9
405.3
397
389.1
381.5
374.1
367.1
360.3
353.7
347.4
341.3
335.4
* 329.7
324.2
318.9
313.8
308.8
If requested, the high frequencies corresponding to n varied between 1 to 15 or Divider codes 100XXXX
are accessible.
Operating Modes
TheTEA7092 can work in 1 of the 3 modes :
- Handset,
- Group listening,
- Handsfree.
In each mode the operating codes determine the
operations held by the circuit as soon as this code
is received :
For instance DTMF dialing begins as soon as the
dialing code is received.
The configuration codes operate in each mode of
operation : for instance if the No AGC code is sent,
the AGC inhibition will work in the 3 modes : Hand-
set, Group listening and Handsfree.
DTMF Dialing
To dial in DTMF the following code sequence is sent :
- DTMF : 000XXXX.
- Dialing code : 0010001.
- Mute or SPEECH code : 0010010 or 0010000
(to end DTMF mode).
The duration of the DTMF signal is fixed by the
duration between DIALING code and MUTE or
SPEECH code
Note : DTMF code automatically mutes the microphone.
Sine Wave Codes
To generate a melody the following sequence of
codes is sent :
- Frequency code : 000XXXX.
- SINE WAVE code : 0011101 or 0011110 (low or
high frequency).
- SPEECHcode: 0010000(toend SINEWAVEmode).
The duration of the melody is being set by the
duration between SINE WAVE code and SPEECH
code.
Note : SINE WAVE code automatically mutes the microphone.
PULSE Dialing
The pulse dialing function is performed by the
microcontroller through the high voltage stage.
The voltage over the TEA7092 during dialing can
be reduced by sending the MASK code 0010101.
To recover the normal speech voltage at the end of
dialing the mask code must be sent again.
17/24
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