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H/S
ANTENNA
RF FILTER
CF401, CF402 10.7MHz 455kHz
Telephone Line Interface TEL LINE AMP TEL LINE SW
Q103, Q104
DIODE BRIDGE
D103
RX_DUP
DUP401
1st Mixer 2nd Mixer
13
EXP
Q110
TEL LINE
RX VCO
T401
X401
PLL OSC
IC401 PLL -DATA -CLK -EN
RF IC
COM
16
AGC
Q112, Q114
54-56 3
9
DC 8V
8V REGULATOR
REG201
DC IN 12V 500mA
PW SW
Q501 Q503
TX VCO
T501
ANALOG DC5V DIGITAL1 DC5V
D204 D205 D203
TX_DUP
DUP501
RF AMP
IC501, T502, Q502
VOL 402 35 45 59 36 38 39 VDD (5V)
5V REGULATOR
Q201
DIGITAL2 DC5V
97 TX Power PLL Data
CDL Min RX L-out L-in LSG out Data TX Data
AC DOWN DTC
Q203, Q204, D210
CODEC
EEPROM MEMORY
IC303, Q303
MUX DSP CLK RTC
DSP (CPU)
IC301
RESET
IC302
SPEAKER MIC LED AC POWER LED301, LED302 DC 8V LED303, LED304 DC 5V AUDIO SIGNAL CONTROL SIGNAL
X301
CHARGE DTC I/O control
CHARGE TERMINAL
KEYBOARD
D307, D306
· Power Supply · Reset · Charge
KX-TC1222BGB BLOCK DIAGRAM (BASE UNIT)