Schematic Diagram (Handset_Main) - Panasonic KX-TG6381LBB Service Manual

KX-TG6381LBB/KX-TG6381LBS/KX-TG6382LBB/KX-TGA632LBB/KX-TGA632LBS

13.4. Schematic Diagram (Handset_Main)

RF circuit
RXI TXO
BCLK
TX_DATA
SLOT_CTRL
SLOT_CTRL
RX_DATA
RF_POWER
RF_POWER
RADIO_EN
RF_RSTN
SYN_DATA
SYN_DATA
SYN_EN
SYN_CLK
SYN_OUT
V_PA
V_RF
3.1V
ANT1_a ANT1_HOT1
ANT1_HOT2
ANT1_b ANT1_HOT3
ANT1_HOT4
ANT2 ANT2
ANT1_GND
ANT2_GND
BACK
3.1V
Charge pump for
DOWN
LCD back light
MENU
*C564 NC
UP
NEXT
3.1V
*RA551
*RA552
220
*Q562 *Q563 Q561
KEY_BACKLIGHT LCD_BACKLIGHT ANT_LED
(Amber) (Amber)
(Amber)
NC: No Components
BCLK
R540 NC
C540 K0.1
TX_DATA
RX_DATA
RF control line
RF_RSTN
Flash memory for booting
SYN_EN
SYN_CLK
1 8
SI SO
SYN_OUT
2 7
SCK GND
3 6
*RESET VCC
4 5
*CS *WP
IC546
NC
TX_EN
FLASH LEFT TALK SP
KIN_5
* 7 4 1
KIN_4
0 8 5 2
KIN_3
SYA 9 6 3
TE
KIN_2
HOLD RIGHT OFF PAUSE
KIN_1
White_LED
26
RADIO_EN
27
HEAD_DET
28
GND6
29
VCC1
SYN_EN
30
SYN_EN
SYN_CLK
31
SYN_CLK
SYN_DATA
32
SYN_DATA
33
NC4
34
TX_EN
35
NC5
RX_DATA
36
RX_DATA
37
NC6
38
CHG_DET
39
NC7
40
LCD_BACK_LIGHT
41
NC8
42
CHG_CTL
43
NC9
DB4
44
DB4
DB5
45
DB5
DB6
46
DB6
DB7
47
DB7
48
GND7
49
VCC2
RESETB
50
RESETB
CI
RESETB
C573 K0.1 R573 820K (1%)
(1%)
R572 430K
LCD_BACKLIGHT
70
DSP Part (control circuit)
RST
X501
13.824MHz
R501
100
SPPN
99
VCC4
98
SPN
97
SPP1
96
IBAT2
95
HSM
94
VCCA
93
GND10
92
MICBIAS
91
MIM
90
MIP
89
VREF
*IC501
88
IBAT1
87
PDN
86
GND9
85
EE_WP
84
UART_RX
83
UART_TX
82
EE_SDA
81
EE_SCL
80
FB2
79
FB1
78
KIN_5
77
KIN_4
76
KIN_3
TCK
TMS
TDI
TDO
RA501
4.7k
E
C
R542 2.2k
R541 10k
Parameter saving EEPROM
(1)
(2)
R525 NC
(3)
1M
(4)
(5)
EEPROM
Writing
protection TR
(6)
B
Q543
(7)
(8)
(9)
(10)
(11)