Sharp GX20 Service Manual - Page 92

GX20 OGSTMECeQXZaHrvG/r2IkAiQ0Xceet/P2YM0TOaE/nCuRaallc4. DIAGRAMS [1] Block diagram CONFIDENTIAL [Main] RF I/F GPO_3 EP100 EARPIECE MIC100 MICROPHONE JK301 HANDS FREE CONNECTOR IRXP IRXN QRXP QRXN ITXP ITXN QTXP QTXN RAMPDAC AFCDAC VANA VCORE VMEM 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 E A MVBAT VOUT**** VIN**** D F AUXADC[1:6] GPO_3 VSIM IC102 AD6521ACA ANALOG BASEBAND Filter I Transmit DAC GSMK Filter Q Transmit DAC MOD Filter RAMP DAC Power Ranping RAM I Receive ADC Filter Q Receive ADC Filter Baseband Serial Port BSDO,BSOFS BSDI,BSIFS GPO_0 (RXON) GPO_1 (TXON) GPO_5 (ARSM) GPO_6 (ATSM) PGA Filter PGA ADC AFC DAC IDAC AUX ADC Voltage Reference SIM LDO Battery Voltage Divider DAC Filter Filter Voiceband Serial Port Control Registers Auxiliary Serial Port ASDO,ASFS ASDI CSDO,CSFS CSDI GPO_29(RESET) CLKOUT_GATE IC202 ADP3408ACP POWER SUPPLY CLKOUT (13MHz) BATT+ VINT 2.6V detect nRESET IC104 AD6529 DIGITAL BASEBAND HSL/ Trace MCU Subsystem SBUS BOOT ROM Serial number MCU ARM7T 52MHz MMI VCORE VANA VT VINT VMEM (Not use) (Not use) E+ - DIGITAL Core LDO ANALOG LDO TCXO LDO MEMORY LDO RTC LDO REF BUFFER Power-UP Sequencing And Protection Logic ROWX PWRONKEY GPIO_7(Jack det) PWRONOIN PWRON CLKON,GPIO_24(SIMEN) GATEIN High(VMEM) Battery Charge Controller CHGIN GPO_2(CHGEN) GPIO_10(EOC) GPIO_6(CHRDET) BATSNS GATEDR ISENSE External Circuit For Charging GPIO DISPLAY RTC KEYPAD BMC SIM USC UART USB 1.1 Fast IrDA MMC/SD USC5(CTS) USC4(RTS) USC0(ADP/GSPda_TX/DAICLK) USC3(GPIO_28,CD) USC1(RXD) USC2(TXD) GPIO_36(ADPDET) USC 6(CONT2/GSPdb_RX/DAIRESET) GPIO_35(CONT1/DTR) GPIO_37(Genie_SW) KEYPADROW[4:0] KEYPADCOL[4:0] VSIM SIMDATAIO SIMCLK GPIO_11 POWER ON GPIO_23(RESET) FLIP KEY KEY GPIO_12 KEYPAD:5X5 KEYPAD V-EXT_CN IC306 TK71635S BACK LIGHT (2.5V) REG15 for Q305 CN301 SIM CARD CONNECTOR 3V 0NLY BATT+ IC205 R1160N301B VRTC 1.8V IC204 R3111Q251C Q201 REG1 VOLTAGE DETECTOR 2.5V DET REG10 LODER VINT:3.0V IC201 REG8 XC6209B302MR Controlled by VMEN HIGH SPEED REGULATOR LDO 10 2 15 9 4 11 6 7 14 13 12 5 16 8 5.2V/600mA Li-Ion BAT100 CN302 EXTERNAL CONNECTOR 13 From AC/DC CHAGER BATTERY 720mAh BACK-UP BATTERY Figure 1 MAIN BLOCK DIAGRAM (1/2) 4 - 1