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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)