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ML7005MB Datasheet(PDF) 16 Page - OKI electronic componets |
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ML7005MB Datasheet(HTML) 16 Page - OKI electronic componets |
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16 / 25 page ![]() ¡ Semiconductor ML7005 16/24 DTMFT and DTMFR Registers 16 kinds of DTMF transmit signals can be determined by setting the DTMFT register. 16 kinds of DTMF receive signals can be monitored from the DTMFR register. The table 3 shows the DTMF signal codes. Even if the DTMF transmit code is changed while the DTMF signal is being transmitted (MFC="1"), the output frequency is not changed. Table 3 DTMF Signal Code List High group signal (Hz) Low group signal (Hz) 1209 1336 697 697 1477 697 1209 770 DIGIT 1 2 3 4 DTT0 DTR0 1 0 1 0 DTT1 DTR1 0 1 1 0 DTT2 DTR2 0 0 0 1 DTT3 DTR3 0 0 0 0 1336 770 5 1 0 1 0 1477 770 6 0 1 1 0 1209 852 7 1 1 1 0 1336 852 8 0 0 0 1 1477 852 9 1 0 0 1 1336 941 0 0 1 0 1 1209 941 * 1 1 0 1 1477 941 # 0 0 1 1 1633 697 A 1 0 1 1 1633 770 B 0 1 1 1 1633 852 C 1 1 1 1 1633 941 D 0 0 0 0 |
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