MX93032 Datasheet, PDF (50/69 Pages) Macronix International – APPLICATION NOTE [M1 VERSION]

MX93032
TABLE 4. CALL PROGRESS TONE DETECTOR CHARACTERISTICS
PARAMETER
Detection level *
Rejection level
Frequency range
Noise tolerance
THD tolerance
Rejection frequency range
Minimum signal duration accept
Maximum response time
MIN
TYP
-30
300
< 280 Hz or
50 ms
50 ms
MAX UNIT
dB
-37 dB
640 Hz
-12 dB
-10 dB
> 670 Hz
* 0 dB is defined as the Vrms of maximum codec input
TABLE 5. DTMF CHARACTERISTICS
PARAMETER
MIN
DTMF signal level for detection *
-43
DTMF twist (high/low tone)
DTMF noise tolerance
DTMF tone duration accept
50
DTMF interdigit pause accept
50
DTMF frequency deviation accept limit
DTMF frequency deviation reject limit
Tone generator level
-25
Tone generator frequency accuracy
Tone generator level accuracy
* 0 dB is defined as the Vrms of maximum codec input
TYP
±9
-10
±_1.5
±₃
±_0.1
±_0.5
MAX
0
+3
UNIT
dB
dB
dB
ms
ms
%
%
dB
%
dB
P/N:PM0689
REV. 1.0.3, DEC. 13, 1999
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