Panasonic KX-TG6451BX - Page 2

2
KX-TG6451BX/KX-TGA641BX
1 Technical Descriptions
1.1. Block Diagram (Base Unit)
TEL LineD101Q111/Q115
RLY
Transistor
RLY
Transistor
RLY
Transistor
RLY
Transistor
- +
~ ~
- +
~ ~
Hook SW
Hook_CTRL
Pulse
Q112/Q114
Q131
LSRp
Side Tone Circuit
TP10 TP9
MICh P3_6 P2_1
Filter
- +
~ ~
- +
~ ~
Ringer IC
CIDINp
CIDINn
Ringing
Filter
D161
IC101
IC301
IC304
IC801 RF PA
3.75V 3.5V
Q351
1.8V
2.5V IC303
VDD/AVD
LDO_CTRL
RF_SUPPLY
4.3V
D138
BAT
Key switch Matrix
P5_5-0 P1_5-2,P2_0
LED
LED1-4
Q601-Q604
LCD Module
Serial EEPROM
TAM IC
IC201
X511 Xtal
(10.368Mhz)
XTAL1
XTAL2
IC501
Handset Speaker
Mic
LCD_CS,LCD_CD,L CD_RESET
Q605-Q607
SPI_CLK,SPI_DO
CP_VOUT1
3.0V
2.5V
SCL2,SDA2
EEP_WP
SCL2,SDA2 P5_6
SPI_DI
P5_7 SPI_CLK,SPI_DO
KEY5-0 ROW4-0
GPIO 3-0
IC561
P4_7-5
BB IC
BXTAL
CLK
CLK(10.268MHz)
TAM_RESET
RST
2.5V 1.8V
2.5V
P3_0 PCM_CLK,DI,DO,FSC
PCM_CLK,DI,DO,FSC
PCM_CLK,D
I,DO,FSC
VDDAVD. VDDIO
VDD
LCD backlight
3.5V_PD
3.5V_PD
VCC
SPI2_CLK,DI,DO,EN
SPI2_CLK,DI,DO,EN
IC
IC301 3.5V
Q351 2.5V IC303
3.5V_PD
IC
IC301 3.5V
Q351 2.5V IC303
Q341
3.5V_PD
PC102
Ringer
DET
Q331
POWER_FAIL
INT1
DC 6.5V
Q162
Q608
3.2V_PD
3.2V_PD
VDDPA
22 24 29 85 27 26 30 30,20 54,89 19 12,91 42,45,50 10
9
61
82,75-71 57-60,86
45-43
65,64
52 63 84
67,68
83 56 41
81-78 17-14
RXon
RXn
RXp
VDD-PADRV
Txon PSEL Pon
TXn
TXp
BPF
ANT1
ANT2
ANT1 ANT2
DA801
DA802
6
5
3
2
95
97
98
93
94
100
92
RFP0 RFP1 RF_RXn RF_RXp
VDD-PADR
RF_TXp RF_TXn RFP4 RFP3 RFP2 RFP0n
VCC