General Description:
16 CIRCUIT OPERATION (BASE UNIT)
(DSP, Flash Memory) is a digital speakerphone/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.
16.1. DSP (Digital Speech/Signal Processing: IC201)
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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.
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DTMF Detection/Generator
The DTMF detection is implemented by the DSP system in software. The DTMF detection is performed during Record,
Playback, and Line Monitoring modes of operation.
When the DTMF data from the Handset is received, the DTMF signal is output.
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Synthesized Voice (Pre-recorded message)
The DSP implements synthesized Voice, utilizing the built in speech detector and an FLASH MEMORY, which stored the
vocabulary.
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Caller ID and Call Waiting CID demodulation
The DSP implements monitor and demodulate the FSK signals that provide CID information from the Central Office.
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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.
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Block Interface Circuit
RF unit, Speaker, Microphone, Telephone line (Main PCB) LED, Key Matrix, LCD (Operation PCB)
16.2. Flash Memory (IC300)
Following information data is stored.
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Voice signal
ex: Pre-recorded Greeting message, Incoming message
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Telephone number, etc.
ex: Telephone Directory number, Caller ID data, ID code
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Settings
ex: message numbers, caller ID numbers, pulse tone dial
55
KX-TG2260BXS / KX-TGA228BXS
Содержание KX-TG2260BXS
Страница 8: ...4 5 Battery Replacement 4 6 Battery information 8 KX TG2260BXS KX TGA228BXS ...
Страница 9: ...5 LOCATION OF CONTROLS 5 1 Base Unit 9 KX TG2260BXS KX TGA228BXS ...
Страница 10: ...5 2 Handset 10 KX TG2260BXS KX TGA228BXS ...
Страница 11: ...6 DISPLAY 6 1 Troubleshooting 11 KX TG2260BXS KX TGA228BXS ...
Страница 12: ...12 KX TG2260BXS KX TGA228BXS ...
Страница 13: ...13 KX TG2260BXS KX TGA228BXS ...
Страница 14: ...14 KX TG2260BXS KX TGA228BXS ...
Страница 15: ...7 SETTINGS 7 1 Connections 7 2 Dialing Mode Handset 15 KX TG2260BXS KX TGA228BXS ...
Страница 16: ...7 3 Line Mode Handset 16 KX TG2260BXS KX TGA228BXS ...
Страница 17: ...7 4 Direct Commands 17 KX TG2260BXS KX TGA228BXS ...
Страница 18: ...8 OPERATIONS 8 1 Making Calls 8 1 1 Using the Handset 18 KX TG2260BXS KX TGA228BXS ...
Страница 19: ...19 KX TG2260BXS KX TGA228BXS ...
Страница 20: ...8 1 2 Using the Base Unit 20 KX TG2260BXS KX TGA228BXS ...
Страница 21: ...8 2 Answering Calls 8 2 1 Base Unit 8 2 2 Handset 21 KX TG2260BXS KX TGA228BXS ...
Страница 22: ...8 3 FLASH Button 22 KX TG2260BXS KX TGA228BXS ...
Страница 23: ...8 4 Dial Lock Handset 23 KX TG2260BXS KX TGA228BXS ...
Страница 24: ...8 5 Erasing Messages 24 KX TG2260BXS KX TGA228BXS ...
Страница 26: ...26 KX TG2260BXS KX TGA228BXS ...
Страница 27: ...8 6 2 Dialing from the Phone Book 27 KX TG2260BXS KX TGA228BXS ...
Страница 28: ...8 6 3 Editing an Item in the Phone Book 8 6 4 Erasing an Item in the Phone Book 28 KX TG2260BXS KX TGA228BXS ...
Страница 31: ...10 ASSEMBLY INSTRUCTIONS 10 1 Fix the LCD to P C Board Handset 31 KX TG2260BXS KX TGA228BXS ...
Страница 42: ...11 9 5 RF DSP interface signal wave form 42 KX TG2260BXS KX TGA228BXS ...
Страница 45: ...12 2 TAM Test mode flow chart 45 KX TG2260BXS KX TGA228BXS ...
Страница 66: ...19 SIGNAL ROUTE Each signal route is as follows 66 KX TG2260BXS KX TGA228BXS ...
Страница 67: ...20 CPU DATA BASE UNIT 20 1 IC201 67 KX TG2260BXS KX TGA228BXS ...
Страница 68: ...21 CPU DATA HANDSET 21 1 IC201 68 KX TG2260BXS KX TGA228BXS ...
Страница 69: ...22 EXPLANATION OF RF UNIT TERMINALS 22 1 IC801 69 KX TG2260BXS KX TGA228BXS ...
Страница 71: ...24 CABINET AND ELECTRICAL PARTS BASE UNIT 71 KX TG2260BXS KX TGA228BXS ...
Страница 72: ...25 CABINET AND ELECTRICAL PARTS HANDSET 72 KX TG2260BXS KX TGA228BXS ...
Страница 73: ...26 ACCESSORIES AND PACKING MATERIALS 73 KX TG2260BXS KX TGA228BXS ...
Страница 74: ...27 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 27 1 Base Unit 27 2 Handset 74 KX TG2260BXS KX TGA228BXS ...
Страница 81: ...29 3 Memo 81 KX TG2260BXS KX TGA228BXS ...
Страница 84: ...30 2 Memo 84 KX TG2260BXS KX TGA228BXS ...
Страница 88: ...31 1 Memo 88 KX TG2260BXS KX TGA228BXS ...
Страница 95: ...95 KX TG2260BXS KX TGA228BXS H M KXTG2260BXS KXTGA228BXS ...