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ANT
42 EARPIECE 41 46 45 D/A
Speech Decoding Speech Encoding
Burst Decoding Burst Encoding
12 RXDA 16 TXDA
20 4 RF Module 5 13 10
MIC
A/D
48 RSSI Analog Front End TP5 + CHARGE CONTACTS TP6 6 EEPROM SCL 67 SDA 66 VDDBAT 36 SWITCHED SUPPLY SWITCH 28 CPU 4.0V D3 VDDLR 37 26 34 53~55, 59, 60 ROWS 17~21 CHARGE CIRCUIT CHARGE 38 CHARGE DETECT 27 31 ADPCM Codec Filter DSP RF Interface 23 SYRI 13 SYEN
IC3
BMC 33 XTAL 10.368 MHz
ON SWITCH
IC2
TP3 BATTERY TERMINAL TP4
5
KEYPAD COLUMNS
IC1
LCD 14 Seg Display pin 2, 5~9 COM 0~5 segment 0~29
BBIC
pin1, 90~100, 87, 78~84, 72~76, 61, 62, 56~58
KX-A143EXB/EXC/EXW BLOCK DIAGRAM (HANDSET)