MSM7718-01 查看數據表（PDF） - Oki Electric Industry
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MSM7718-01 Datasheet PDF : 38 Pages
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¡ Semiconductor
MSM7718-01
AC Characteristics (Tone Detect Function)
(VDD = 2.7 to 3.6 V, Ta = –25 to +70°C)
Parameter
Symbol
Condition
Min. Typ. Max. Unit
CPT Detection Frequency
CPT Non-detection Frequency
fdetcp
frejcp
—
350 — 640 Hz
700 — — Hz
—
— — 250 Hz
CPT Detection Level
CPT Non-detection Level
CPT Input Signal Continuation Time
CPT Detection Delay Time
CPT Detection Hold Time
DTMF Detection Frequency
DTMF Non-detection Frequency
DTMF Detection Level
DTMF Non-detection Level
DTMF Input Signal continuation Time
DTMF Detection Delay Time
DTMF Detection Hold Time
ANS Detection Frequency
ANS Non-detection Frequency
Vdetcp
Vrejcp
tdetcp
trejcp
tdlycp
tholcp
fdetdt
frejdt
Vdetdt
Vrejdt
tdetdt
trejdt
tdlydt
tholdt
fdetan
frejan
Input Frequency: 350 to 640 Hz
–39 — 0 dBm0
—
— — –49 dBm0
CPT detected
55 — — ms
CPT not detected
— — 30 ms
—
30 45 55 ms
—
7 16 24 ms
At Nominal Frequency
— — ±1.5 %
At Nominal Frequency
±3.8 — — %
Input Frequency:Nominal Frequency ±1.5% –39 — 0 dBm0
—
— — –47 dBm0
CPT detected
38 — — ms
CPT not detected
— — 16 ms
—
16 — 38 ms
—
14 — 25 ms
—
2079 2100 2121 Hz
2350 — — Hz
—
— — 1900 Hz
ANS Detection Level
ANS Non-detection Level
ANS Input Signal Continuation Time
ANS Detection Delay Time
ANS Detection Hold Time
Vdetan
Vrejan
tdetan
trejan
tdlyan
tholan
Input Frequency: 2079 to 2121 Hz
—
CPT detected
CPT not detected
—
—
–31 — 0 dBm0
— — –35 dBm0
480 — — ms
— — 420 ms
420 450 480 ms
7 12 17 ms
tdetXX
trejXX
INPUT SIGNAL
DETECPT: CR7-B3
DETDTMF: CR7-B2
DET21L: CR7-B1
DET21L: CR7-B1
INT pin
INT: CR7-B4 (positive logic)
tdlyXX
tholXX
The state of the INT pin is changed by reading the
contents of CR7. It is retained when CR7 is not read.
Note : In the case of call progress tone, DTMF tone, and 2100 Hz tone, XX refers to cp, dt, and
an respectively.
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