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12 CIRCUIT OPERATION (BASE UNIT_MAIN)
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.
12.1. DSP (Digital Speech/Signal Processing: IC501)
•
Voice Message Recording/Play back
The DSP system use a proprietary speech compression technique to record and store voice message in Flash Memory.
An error correction algorithm is used to enable playback of these messages from the Flash Memory.
•
DTMF Detection/Generator
The DTMF detection is implemented by the DSP system in software. The DTMF detection is performed during Record, Play
back, and Line Monitoring modes of operation.
When the DTMF data from the Handset is received, the DTMF signal is output.
•
Synthesized Voice (Pre-recorded message)
The DSP implements synthesized Voice, utilizing the built in speech detector and a Flash Memory, which stored the vocabulary.
•
Caller ID demodulation
The DSP implements monitor and demodulate the FSK signals that provide CID information from the Central Office.
•
Analog Switching
The voice signal from telephone line is transmitted to the speaker or the voice signal from speakerphone microphone is
transmitted to the Telephone line, etc. They are determined by the signal path route operation of voice signal.
•
Block Interface Circuit
RF part, LED, Key scan, Speaker, Microphone, Telephone line, LCD.
12.2. Flash Memory (IC601)
Following information data is stored.
•
Voice signal
ex: Pre-recorded Greeting message, Incoming message, Talking Caller ID announcement
•
Telephone number, etc.
ex: Telephone Directory number, ID code
•
Settings
ex: message numbers, Flash Time, Tone/Pulse
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KX-TG5571BXM / KX-TGA550BXM
Содержание KX-TG5571BXM
Страница 8: ...4 2 Location of Controls 4 2 1 Base Unit 8 KX TG5571BXM KX TGA550BXM ...
Страница 9: ...4 2 2 Handset 4 2 3 Charger Unit for Optional Handset 9 KX TG5571BXM KX TGA550BXM ...
Страница 10: ...4 3 Displays 4 3 1 Display Items 4 3 2 Menu Icons 10 KX TG5571BXM KX TGA550BXM ...
Страница 11: ...4 3 3 Troubleshooting Handset LCD 11 KX TG5571BXM KX TGA550BXM ...
Страница 12: ...12 KX TG5571BXM KX TGA550BXM ...
Страница 13: ...4 4 Settings 4 4 1 Connections 13 KX TG5571BXM KX TGA550BXM ...
Страница 14: ...4 4 2 Guide to Handset Programming 14 KX TG5571BXM KX TGA550BXM ...
Страница 15: ...15 KX TG5571BXM KX TGA550BXM ...
Страница 17: ...4 4 4 Direct Commands 17 KX TG5571BXM KX TGA550BXM ...
Страница 18: ...18 KX TG5571BXM KX TGA550BXM ...
Страница 19: ...19 KX TG5571BXM KX TGA550BXM ...
Страница 21: ...21 KX TG5571BXM KX TGA550BXM ...
Страница 22: ...22 KX TG5571BXM KX TGA550BXM ...
Страница 23: ...23 KX TG5571BXM KX TGA550BXM ...
Страница 24: ...24 KX TG5571BXM KX TGA550BXM ...
Страница 36: ...7 9 1 1 Canceling the Handset Registration 7 9 1 2 Reregistering the Handset 36 KX TG5571BXM KX TGA550BXM ...
Страница 40: ...7 9 5 RF DSP Interface Signal Wave Form Test Burst Mode 40 KX TG5571BXM KX TGA550BXM ...
Страница 41: ... Test Burst Mode 41 KX TG5571BXM KX TGA550BXM ...
Страница 80: ...17 2 Power Supply Circuit Voltage is supplied separately to each block 80 KX TG5571BXM KX TGA550BXM ...
Страница 84: ...19 SIGNAL ROUTE Each signal route is as follows 84 KX TG5571BXM KX TGA550BXM ...
Страница 85: ...Each signal route is as follows RF part signal route 85 KX TG5571BXM KX TGA550BXM ...
Страница 88: ...22 EXPLANATION OF IC TERMINALS RF PART 22 1 IC701 88 KX TG5571BXM KX TGA550BXM ...
Страница 89: ...22 2 IC801 Backside Terminal GND 89 KX TG5571BXM KX TGA550BXM ...
Страница 90: ...22 3 IC851 Backside Terminal GND 90 KX TG5571BXM KX TGA550BXM ...
Страница 93: ...24 CABINET AND ELECTRICAL PARTS BASE UNIT 93 KX TG5571BXM KX TGA550BXM ...
Страница 94: ...25 CABINET AND ELECTRICAL PARTS HANDSET 94 KX TG5571BXM KX TGA550BXM ...
Страница 95: ...26 CABINET AND ELECTRICAL PARTS CHARGER UNIT 95 KX TG5571BXM KX TGA550BXM ...
Страница 96: ...27 ACCESSORIES AND PACKING MATERIALS 27 1 KX TG5571BXM 96 KX TG5571BXM KX TGA550BXM ...
Страница 97: ...27 2 KX TGA550BXM Optional Set 97 KX TG5571BXM KX TGA550BXM ...
Страница 98: ...28 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 28 1 Base Unit 28 2 Handset 98 KX TG5571BXM KX TGA550BXM ...
Страница 99: ...28 3 Charger Unit 99 KX TG5571BXM KX TGA550BXM ...
Страница 106: ...Memo 106 KX TG5571BXM KX TGA550BXM ...
Страница 113: ...Memo 113 KX TG5571BXM KX TGA550BXM ...
Страница 124: ...Memo KX TG5571BXM KX TGA550BXM 124 ...