8
KX-TG3661JXM/KX-TG3662JXM/KX-TG3668JXM/KX-TG3669JXM/KX-TGA365JXM
4.2.
Block Diagram (Base Unit_Main)
HFMIC
FROM
DAB[0-15]
AD[1-19, 21]
RDN, WRN,
/ROMCS
COL[0-4]
ROW[0-5]
LCD_CLK,LCD_TXD
LCDBL
ANSL EP
Q25
Q24
LCD_START
LCD_INH
RF3.3V
ANT1
ANT2
RXDA
TXDA
PAON
RSSI
RXDSG
SYDA, SYCL, SYEN, SYRI
IC15
IC8
Extended I/O
Extended I/O
IC10
IC300
IC301
Radio part
DAB[0:7]
/IOCS
DAB[8:15]
/
IOCS
IC13
HSIN
ODH1, ODH2
SPMUTE
+5VF
+3.2V Power
BB3.0V
BB3.0V
DC separation
From
Line
The excessive sound protection circuit
+
-
D3
DP
Q8
Q2
NHS
HSIN
BELL
LINE_IN-, LINE_OUT
+VIN
+5V
RF3.3V
To Handset
To Speaker
To operation unit
To antenna
ACFL
SP AMP
SPOUT
KEYTONE
CIDIN+
CIDIN-
HFMIC
IC5
IC14
SPCNT
LSR-
LSR+
HSMIC-
HSMIC+
X1
10.368MHz
+5V
BB1.8V
BB3.0V
IC9
Q5
Q6
Q7
Q3
Q15
D10
IC4
IC7
Q9, Q13
Q10
Q11
Q14 Q16
IC1, Q12,
PC1, PC2
Q20
DP Pulse SW
Hook SW
Power Feeding
Circuit
Automatic hold releasing circuit
Parallel connection detection
CPC detection
Incoming call
detection circuit
CID filter circuit
Handsfree
MIC Bias circuit
From AC adaptor
+5V Power
supply circuit
+3.3V Power
supply circuit
Power failure
detection circuit
Analog Voice
Control Circuit
Ringer for power failure
Excessive sound impact protection function
with saturation characteristic
Flash ROM/Calling Name Storage Device to comply with Article 11
Input : 220V 50Hz
Output : DC6.5V 500mA
Mic1
IC16
Supply circuit
Q26
SPLED
TG3661/3662/3668/3669 BLOCK DIA
GRAM (Base Unit_Main)