msm7715 Oki Semiconductor, msm7715 Datasheet - Page 11
msm7715
Manufacturer Part Number
msm7715
Description
Multi-function Telecommunication Lsi
Manufacturer
Oki Semiconductor
Datasheet
1.MSM7715.pdf
(21 pages)
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¡ Semiconductor
When the DTMF tone is sent
When the call progress tone (CPT) is detected
AIN
CP
CP
DTG1
DTG2
DTG3
DTG4
DTO
TEN
CPW = "1"
CPW = "0"
t
SDT
Figure 3 Call Progress Tone Detect Timing
Figure 2 DTMF Transmit Timing
t
DELCP
t
HDT
400 Hz
941 Hz + 1447 Hz
t
HOLCP
MSM7715
11/21
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