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13 BLOCK DIAGRAM (Handset)
ANTENNA
DUPLEXER
Q4, Q1
Power-down
R2
3.6V
0R
BATTERY
RF Module
MIXER
Q512
LNA: Low Noise Amp
Q555, Q556
RX_VCO
Q506
Doubler/Buffer
TX_VCO
LPF
Q510
Q509
Q5
TX ON/OFF
Tx VCC
Tx_PWR
18
Q2
RX ON/OFF
Rx VCC
Rx_PWR
11
Power-down
5
VDD
RESET
27
RESET & CHARGE
CIRCUIT
CHG_DET
25
BUZZER CKT.
IF FILTER
CF501
37
SP OUT 2
1st IF_IN
SP OUT 1
46
RX PD
IC1
(RF IC)
MIC_IN
TX AUDIO
SFC 2
4
TX_DATA
10
PD-IN
RX_DATA
15
16
17
R1 - 3
U1
C1 - 4
1
X1
4MHz
2
VCC
4
RINGSW
Buzz
23
RINGER
ON/OFF
Q3, Q6
KX-TC1468LBB: BLOCK DIAGRAM (HANDSET)
15
RECEIVER
16
MICROPHONE
9
Key
1
2
3
RE/PA
TALK
4
5
6
OFF
FLASH
7
8
9
CHAN
0
#
LOUD
AUTO
K
X
- T
C
1
4
6
8
L
B
B
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