22
KX-TG9333PK/KX-TG9334PK/KX-TGA931T
4.7.
Circuit Operation (Handset)
4.7.1.
Construction
The circuit mainly consists of DSP and RF part as shown in the block diagram.
4.7.1.1.
DSP: IC501
Function
• Battery Low, Power down detect circuit
• Ringer Generation
• Interface circuit
RF part, Speaker, Mic, LED, Key scan, LCD, Headset
Initial waves
Note:
(*1) The initializing time of the DSP chip is 20 ms under normal conditions.
4.7.1.2.
RF part
Mainly voice signal is modulated to RF, or it goes the other way.
4.7.1.3.
EEPROM: IC541
Setting data is stored.
ex: ID code, user setting
Содержание KX-TG9333PK - Expandable Cordless Phone
Страница 2: ...2 KX TG9333PK KX TG9334PK KX TGA931T ...
Страница 23: ...23 KX TG9333PK KX TG9334PK KX TGA931T 4 7 2 Power Supply Circuit Voltage is supplied separately to each block ...
Страница 28: ...28 KX TG9333PK KX TG9334PK KX TGA931T 4 10 Signal Route ...
Страница 29: ...29 KX TG9333PK KX TG9334PK KX TGA931T RF part signal route ...
Страница 34: ...34 KX TG9333PK KX TG9334PK KX TGA931T 7 1 2 Programming using the Direct Commands ...
Страница 35: ...35 KX TG9333PK KX TG9334PK KX TGA931T ...
Страница 36: ...36 KX TG9333PK KX TG9334PK KX TGA931T 7 2 Error Messages ...
Страница 37: ...37 KX TG9333PK KX TG9334PK KX TGA931T 7 3 Troubleshooting ...
Страница 38: ...38 KX TG9333PK KX TG9334PK KX TGA931T ...
Страница 39: ...39 KX TG9333PK KX TG9334PK KX TGA931T ...
Страница 40: ...40 KX TG9333PK KX TG9334PK KX TGA931T ...
Страница 69: ...69 KX TG9333PK KX TG9334PK KX TGA931T ...
Страница 70: ...70 KX TG9333PK KX TG9334PK KX TGA931T 11 1 2 Handset ...
Страница 71: ...71 KX TG9333PK KX TG9334PK KX TGA931T 11 1 3 Charger Unit ...
Страница 72: ...72 KX TG9333PK KX TG9334PK KX TGA931T 11 2 How to Replace the Handset LCD ...
Страница 73: ...73 KX TG9333PK KX TG9334PK KX TGA931T ...
Страница 78: ...78 KX TG9333PK KX TG9334PK KX TGA931T Memo ...
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Страница 92: ...92 KX TG9333PK KX TG9334PK KX TGA931T Memo ...
Страница 101: ...101 KX TG9333PK KX TG9334PK KX TGA931T 15 3 Explanation of IC Terminals RF Part 15 3 1 IC701 ...