¡ Semiconductor

ML7005

20/24

Figure 9 FX Input Level Adjustment

Processing the Input Pin when the DTMF Receiver and CPT Detector are not Used

Process the Input pin according to the method shown in the figure 10.

–

+

C8

IN

FXDIM

Gain =

£ 10

FXDIO

FX Detector Input Level Adjustment

Adjust the input level according to the method shown in the figure 9.

Determine the value of a usable resistor so that the output level of FXDIO is less than the

maximum detect level described in the AC Characteristics.

Figure 10 Processing the Unused Input Pin

–

+

DTRIP

(CPDIP)

DTRIM

(CPDIM)

SG

DTRIO

(CPDIO)