GX20
4 – 1
CONFIDENTIAL
OZ/IQ/YO/Calc
GX20
Service Manual
TQGX20
Market
E
CHAPTER 4.
DIAGRAMS
[1] Block diagram
Figure 1 MAIN BLOCK DIAGRAM (1/2)
[Main]
RF I/F
MIC100
MICROPHONE
EP100
EARPIECE
V-EXT_CN
(2.5V)
UART
MMI
USC
SIM
BMC
BOOT
ROM
2.6V
detect
SBUS
52MHz
IC102
RAMP
DAC
AFC
DAC
IDAC
SIM
LDO
TCXO
LDO
RTC
LDO
REF
BUFFER
ADP3408ACP
POWER
SUPPLY
16
8
12
5
6
7
15
14
13
10
2
1
3
VANA
VCORE
VMEM
4 11
Filter
Filter
Filter
I Transmit
DAC
Q Transmit
DAC
GSMK
MOD
Baseband
Serial
Port
Power
Ranping RAM
I Receive
ADC
Q Receive
ADC
VSIM
A
VCORE
VANA
VT
VMEM
VINT
(Not use)
(Not use)
DIGITAL
Core LDO
ANALOG
LDO
Filter
Filter
Filter
AUX
ADC
Control
Registers
Voltage
Reference
Battery
Voltage
Divider
Power-UP
Sequencing
And
Protection
Logic
Battery
Charge
Controller
GATEIN
High(VMEM)
VSIM
SIM CARD
CONNECTOR
Auxiliary
Serial
Port
AD6529
GPIO
DISPLAY
RTC
KEYPAD
MCU Subsystem
IRXP
IRXN
QRXP
QRXN
ITXP
ITXN
QTXP
QTXN
RAMPDAC
AFCDAC
CLKON,GPO_1(TXON)
GPO_2(BS2),GPO_9(RFON)
GPO_16(BS0),GPO_17(BS1)
GPO_18(SYNTHEN)
GPO_20(SYNTHDATA)
GPO_21(SYNTHCLK)
CLKIN
(13MHz)
V-ANA
GPO_3
VOUT****
VIN****
AUXADC[1:6]
EXTERNAL CONNECTOR
BAT100
BACK-UP
BATTERY
REG10
2.5V DET
FLIP KEY
HSL/
Trace
GPO_3
MVBAT
MEMORY
LDO
BSDO,BSOFS
BSDI,BSIFS
GPO_0 (RXON)
GPO_1 (TXON)
GPO_5 (ARSM)
GPO_6 (ATSM)
CSDO,CSFS
CSDI
ASDO,ASFS
ASDI
GPO_29(RESET)
CLKOUT_GATE
CLKOUT (13MHz)
USC0(ADP/GSPda_TX/DAICLK)
USC3(GPIO_28,CD)
USC5(CTS)
USC4(RTS)
USC1(RXD)
USC2(TXD)
GPIO_36(ADPDET)
USC
6(CONT2/GSPdb_RX/DAIRESET)
GPIO_35(CONT1/DTR)
GPIO_37(Genie_SW)
Li-Ion
BATTERY
720mAh
Controlled by VMEN
From AC/DC CHAGER
5.2V/600mA
IC306
TK71635S
IC205
R1160N301B
VRTC 1.8V
BATT+
VINT
PWRON
PWRONOIN
CLKON,GPIO_24(SIMEN)
nRESET
GPO_2(CHGEN)
GPIO_10(EOC)
GPIO_6(CHRDET)
BATSNS
GATEDR
ISENSE
CHGIN
GPIO_12
GPIO_11
External
Circuit For
Charging
SIMDATAIO
SIMCLK
GPIO_23(RESET)
3V 0NLY
BATT+
KEYPADROW[4:0]
KEYPADCOL[4:0]
KEYPAD:5X5
REG15 for
LODER
ROWX
PWRONKEY
9
Filter
Filter
Voiceband
Serial
Port
DAC
ADC
PGA
PGA
POWER ON
KEY
KEYPAD
BACK LIGHT
JK301
HANDS FREE
CONNECTOR
AD6521ACA
ANALOG BASEBAND
IC202
IC104
CN302
Q305
CN301
IC201
XC6209B302MR
HIGH SPEED LDO
REGULATOR
IC204
R3111Q251C
VOLTAGE
DETECTOR
Q201
DIGITAL BASEBAND
REG1
MCU
ARM7T
E
+
-
GPIO_7(Jack det)
REG8
VINT:3.0V
Serial
number
USB 1.1
Fast IrDA
MMC/SD
E
D
F
Содержание GX20
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