MSM7715 datasheet(11/21 Pages) OKI

Part #	MSM7715

Description	Multi-Function Telecommunication LSI

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Manufacturer	OKI [OKI electronic componets]

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¡ Semiconductor

MSM7715

11/21

When the DTMF tone is sent

Figure 2 DTMF Transmit Timing

When the call progress tone (CPT) is detected

TEN

DTG1

DTG2

DTG3

DTG4

DTO

tSDT

tHDT

941 Hz + 1447 Hz

Figure 3 Call Progress Tone Detect Timing

AIN

CP

CPW = "1"

CP

400 Hz

CPW = "0"

tDELCP

tHOLCP

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