Circuit Operation (Base Unit); Dsp (Digital Speech/Signal Processing: Ic501) - Panasonic KX-TG2340JXS Service Manual

Table of Contents

KX-TG2340JXS / KX-TGA236JXS

17 CIRCUIT OPERATION (Base Unit)

General Description:

(DSP, Flash Memory) is a digital speech/signal processing system that implements all the functions of speech compression,

record and playback, and memory management required in a digital telephone answering machine.

The DSP system is fully controlled by a host processor DSP. The host processor provides activation and control of all that

functions as follows.

17.1.1. Function

· Caller ID and Call Waiting CID demodulation

The DSP implements monitor and demodulate the FSK signals that provide CID information from the Central Office.

· Analog Switching

The voice signal from Handset is transmitted to the speaker or the voice signal from Digital TAM System is transmitted to the

Telephone line, etc. They are determined by the signal path route operation of voice signal.

· Block Interface Circuit

RF unit, LED, Key scan, Speaker, Microphone, Telephone line, LCD.

Table of Contents

Kx-tga236jxs