Schematic Diagram (Base Unit_Main) - Panasonic KX-TG8231B Service Manual

KX-TG8231B/KX-TG8232B/KX-TGA820B

12.2. Schematic Diagram (Base Unit_Main)

R125 2.2
3.3 V
+3.3V
Q10 NC
+2.5V
+1.8V
10.368 MHz
2.5 V
0 V
R142
RFCLK
NC
LE
SK
+2.5V +1.8V
25 16
*LSR GPO8/PAOUTm
26 15
LSRp VDDPA
27 14
MICh GPO9/PAOUTp
IC8
28 13
*MIC AVD1
29 12
VREFm SPI_EN
Fin
30 11
VBUF SPI_CLK
31 10
MICp SPI_DO
32 9
VREFp SPI_DI
33 R82
100k
Beep/Bell signal
ANSWER_ON
MESSAGE
NC: No Components
ANT_1 ANT_2
A_2
L7
1.5n
ANT C122
1p
1 26
GND1 GND14
2 25
ANT2 TXPO-SET
3 24
VCCPA GND12
4 23
GND2 GND13
IC10
5 22
GND3 GND10
6 21
VDD_ANA RF UNIT ANT1
7 20
VDD_DIG *RESET
8 19
GND4 GND9
9 18
SYRI TXDA
10 17
GND5 GND8
+2.5V
R143
RX DATA
NC
+3.3V
SP- SP- SP+ SP+
1
C144
2
NC
TAM_RSTn
3
4
Flash memory
TAM_CSn
SPICLK
TAMIC_CSn
SPIDO
SPICLK
SPIDI
SPIDI
SPIDO
R120
Q21
R119
270
KEY1
KEY0
ROW2
ROW1
ROW0
R30
82
A_1
LOW_RAD
LOW_RAD
Q24
C
B
E
NC
R112
RESET
1k
TX DATA
TP10
R111
TDO
330
SIO
+2.5V
R144
NC
1
2
3
8M FLASH
4
IC11
+3.3V
8
SI SO
7
SCK GND
6
*RESET VCC
R88
5
*CS *WP
0
R91
330
270
CN5
+2.5V +3.3V
Flat-cable
CN5-2
GND
CN5-7
LED2
CN5-8
VDD
CN5-9
RA1 0
LED1
D13
8 1 CN5-10
7 2 KEY1
K A
CN5-5
6 3
KEY0
K A
R141
5 4 CN5-4
D14
ROW2 390k
CN5-3
ROW1
CN5-6
ROW0
CN5-1
GND
for TG7220/8220
68
Q5
C155 C18
NC 10p
R29 C22 R23 R20
56 1u 100k 2.7k
R27
+2.5V
100k
TX_AF
R116
390
+2.5V
64K EEPROM
*IC5
8
A0 VCC
7
A1 WP
6
A2 SCL
5
VSS SDA
EEPROM
+2.5V
Q25
for TG7220/8220
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)