Schematic Diagram (Handset_Main) - Panasonic KX-TG3531BXS Service Manual

KX-TG3531BXS/KX-TG3531BXB/KX-TG3532BXS/TG3532BXB/KX-TGA351S/KX-TGA351B

13.5. Schematic Diagram (Handset_Main)

RF circuit
BCLK
RSSI
TX_DATA
PA_CONT
RX_EN
TX_EN
RX_GAIN
RX_DATA
SHCTRL
RF_RSTN
SYN_DATA
SYN_EN
SYN_CLK
SYN_OUT
V_PA
V_RF
GND
2.5 V
2.5V
Regulator for RF unit
3.3V
BACK FLASH
1 2
DOWN
MENU 0
UP SYA
NEXT HOLD
Q556
NC
Q552
E E
B
C C
NC
VE(RED) KEY_BACKLIGHT ANT_LED LCD_BACKLIGHT
Talk(GREEN) Batt(RED) (Amber)
NC: No Components
RXI TXE RXE TXO BCLK
RSSI
TX_DATA
PA_CONT
RX_EN
TX_EN
RX_GAIN
RX_DATA
RF control line
SHCTRL
RF_RSTN
SYN_DATA
SYN_EN
SYN_CLK
SYN_OUT
V_PA
V_RF
R574 NC
VIN
5 1
VOUT
2
VSS
4 CE 3
NC
IC382
3.3 V
2 3
VIN
VOUT
IC381
VSS
1
LEFT TALK SP
KIN_5
* 7 4 1
KIN_4
8 5 2
KIN_3
9 6 3
TE
KIN_2
RIGHT OFF PAUSE
KIN_1
*Q551
B
*RA551
(Amber) (Amber)
Flash memory for booting
NC
1 8
SI SO
2 7
SCK GND
3 6
*RESET VCC
4 5
*CS *WP
IC546
R540 NC
C540
SHCTRL
26
SHCTRL
27
HEAD_DET
28
GND
29
VCC
SYN_EN
30
SYN_LE1
SYN_CLK
31
SYN_CLK
SYN_DATA
32
SYN_DATA
RX_EN
33
RX_EN
TX_EN
34
TX_EN
RX_GAIN
35
RX_GAIN
RX_DATA
36
RX_DATA
37
NC
38
CHG_DET
R503
39
NC
10k
40
NC
41
NC
R504
42
NC
43
NC
NC
DB4
44
DB4
DB5
45
DB5
DB6
46
DB6
DB7
47
DB7
48
GND
49
VCC
RESETB
50
RESETB
CI
C573 K0.1 R573 820K (1%)
3L_DOT_LCD
88
DSP Part (control circuit)
K0.1
IC501
RESETB
R572
430K (1%)
R542
R541
CA571
1 4
2 3
0.47uF
20 ms
Power ON
(Reset)
Parameter saving EEPROM
(1)
(2)
RST
(3)
X501
13.824MHZ
RS
R501 NC
(4)
(5)
100
SPPN
99
VCC
98
SPN
97
SPP
96
IBAT2
95
HSM
94
VCCA
93
GND
92
MICBIAS
91
MIM
90
MIP
89
VREF
88
(6)
IBAT1
87
PDN
86
GND
85
EE_WP
84
UART_RX
83
UART_TX
82
EE_SDA
81
EE_SCL
80
CHG_CLT
79
FB
78
KIN_5
77
KIN_4
76
KIN_3
(7)
TCK
TMS
TDI
TDO
(8)
(9)
(10)
1k
10k
(11)
(12)
(13)
(14)
(15)
(16)
(17)