手机功能模块介绍

1、手機功能模塊介紹李鐵海手機結構 一部移动电话包括无线接收机(Receiver)、 发射机(Transmigr)、控制模块 (Controller)及人机界面部分(Interfac e)和 电源(Power Supply) o從印刷板電路大體可分為射頻&基帶兩 個部分。RF部分以hutch手機為例Basebandf*3 曽,_ 泊A .,i -MTiPlM 1 r I I11.J if JBlRX SMRXLCDLCDKeyboardFEMKeyboardFlashFlashDCT-4 FlashDCT-4 FlashFEM(PA+Ant.switch)(PA+Ant.switch)UEMCLi

2、teBatteryRF IC(PMB 3258)rx1 A MlrxH3O SIM ReaderSystem connectorDCT4 Plug&PlayDCjack4Charger 1 接收部分1接收機電路原理分析二由天線接收下來的高頻信號進入N7700在二 VC 1VC2VC3的控制下輸出GSMRX DCSRX信號其中GSMRX信號經SAW Z西02濾波后送 給中頻IC N7600 的29 30腳DCSRX信號經SAW Z7600 二 濾波后送到N7600的34 35腳。GSMRX DCSRX信號 Z 在N7600里面進行低噪聲放大與本振信號進行混頻， 混頻后的信號經濾波自動增益放大后解

3、調岀接收IQ 信號RXI RXQ分別送給UEM的F13 F14 G13 G14腳 RXI RXQ在UEM經過A/D轉換解調形成接收數字信 號RXID RXQD.從其Cll C14腳輸出,送入UPP的R5 Z 與N7腳在UPP里面進行信道解密，解碼,去交織形成 數字語音信號EARDATA從UPP的F2腳輸出送入 UEM的B6腳在UEM里解碼、D/A轉換、音頻放大后從P11P12輸岀。4SM900DcsloooFront End ModuleN7700RF3282E5.1R772033pGND2JI15100TXIN.LB RXOOUTLBOL2ANT OL1 TXP PAJDTXIN.HB RX

4、OUT_HB VPCVREG VBAT_LB VBAT.HB22r252318C7726一 22pMb2.8VC7728l0p5R7733 100R 卜VC1YO2YU3Gr SlVTOOTi2XZOO1U SJXrEOO1O1Q Q S： ZLSOOZFCXZo11IXZJS1SOOTX：X1128 西30VBATPC VC1 VC2VC3JJ7600treo?Oat10r)H9937AHUGNTXITX1X rxzTX2XQ1575a41*HL 丄.丄 C7530 62HP g15nxiRX1XTXRXC1RI?RX2 TXRXCTRL) RX2KRX3 fVQX RX4HX4KOHO寸)

5、CS18QjCfBZT56oR77Q4RF power supplyC7e30JLctwT1近亘ATie17 102377五vccscVDSC3306Vmin/VVtyp/VVmax/VItypmAImax mANotesVR1Z.7Z.78Z.866575vtx (supply voltage for PMB3Z5B lo and rx partsVR22.72.782.782.43.0VXO (VCXO supply voltage)VR32.72.782.864147VTX2 (Supply voltage for PMB3258 modulator output stage)VR12

6、72.782.8643-18VRX (Supply for RFIC RX and TX parts)VRS2.72782.86?Q35VPLL (Supply for VCOr PLL and digital parts2.8VVFLASH1VBATBBRFCONVDA(O) RFCONYDA RFCONYDA(2) RFCON2A RFCONVDA RFCONVDA(5)AUDUEMCTRL A8AUDUEMCTRL(2)AUDUEMCTRL(3)B7ISIMIFO)A4“B4ISIMIF(2)A3厂IACCDIF(2)B5ACCDF C4 .IACCDIF(4)A6IACCDF(5)05

7、 *RFCOrSVCTRL(O)B10RFCONVCTRL C%rfconvctrl B8UEMINTMBUSXUEMCBUSENXSMIODAI SMIOCLKI SMIOCTRLIM8U5TXIMBUSRFPR0DTP7UB14C11RXID TO UPPrx lacB12A13JUS1XO FBUSRXOVDACRXD2PR0DTP2UC223e， VANA |Z8IQOrA/DFBUSTFBUSR)|DBUSCLkJ 丄DBUSDBUSD12VSACRXQINNkCONVTXRXIQHy|vTC22R7-13J8C2287丄10k 205 1O0n Tnd K13KCONVTXTXQD

8、AUXDRFCONCLXIOUTP TXIOUTN TXQOUTP TXQOUTNVREFVDAADCVANA12.8VH9J14J13H13H14N6C22371C0n1u0C2230(=R2205 10kN14N13M14L13jgBSIBTEMPKEYB1.MIC3P KEYB2.MIC3N VCXOTEMP PATEMP VSAADCAFCOUT AUXOUTG12H12AFC J2992 RFAUXCORFAUXCCCAI门GENI01GENI02GENIO3GENI04GENI05C13D14E12E13/J22OO/J22O1/J2202/J2203/ J2204(oTeo_z

9、山0GENIOfO)GENI0(1)GENlO(2)/GENI0(3)10n10rj 1Q0n/ 18VJ2840E6J2841E5J2842B4J2843B372844C4_7J284572846JJ2847GND丄C14 f f bleepx JTCIk I p pSIeepCIk JTRstW 11JTDIJTMSJTDOEMU(EMU(ataDataEMU數字語音GenTerr GenTestl GenTesi2VCORE1.36VVIOC2885C28871OnGNDC2880 C2882C2|81C2883 C2884F7G2Mini Clk sDa :nXst2 I I Gftn

10、ipanGenK GenKGenldGenlO去交織029026IrTx IrRxVDDDVDCCVDDCVDDP_VDDPDIrp VDDPDRAll |VDDPVDDDVDDDVDDVDDCVDDIO1VDDIO2VDDIO3MOVDDIO4VDDAVSSDSP1VSSDSP2wrmrnn解碼sTxsRx_ sTx BusRx信道解密Clk sDa n1XfConvCIknl018DGo1756AUDIODAT AUDIODATD366J2MSAUDUEMCTF AUDUEMCTR AUDUEMCTF AUDUEMCTFISIMIF(O) l$IMIF(2)、 ISIMIF TO UEMJ

11、2804C2N3P3K6N6T489IACCD IACCDH2F3IACCDIIACCD1IACCDIIACCDIK3 J?J2808J2809 ZJ2810form UEM10RFCONVCTRRFCONVCTRRFCONVCTFGENIOQERFCOMVDA(0)RFCQNVDA(1)RFCONVDA(2)MRFCONVDA(3)JRFCONVDA(4)SIRFCONVDA(5)J 32.768kHzP2M7VANA 22.8V1AUDIO(4:0)P8N8P9GND |”AUDIO(4) yAUDlO(3) pAUDIO(2)J7GN匸XAUDIO(6) M11 mF p EARNM：C

12、BADNTM音頻放大HFMSHFCMMICSIAUD2HOOKlNIf TvBATDRIVM!CB；VIBRA”：C2匸.AJUZZOM：C2h L)/A LIG4TVSAADRIV1 DRI72VDD18VSSIVOWI IVVSIMz解碼澀SLEEfIMRSTEARDATZ产fIMLzMixUUt 1| SIMGNDVDC28UEMINTCBUSCLK CBUSDATACBUSENXMBUSFBUSTXOFBUSRXO2 發射機部分原理分析ZMIC把語音信號進行聲電轉,轉換后的語音信 Z 號在UEM進行音頻放大，A/D轉換編碼后形成 2 數字語音信號MICDATA送入UPP ,在UPP內

13、部進行交織、加密、信道編碼形成發射數字 Z 信號TXID TXQD.送到UEM進行調制D/A轉換 Z，形成TXIP TXIN TXQP TXQN送到中頻ICZ N7600與本振信號混頻，混頻后的發射經過自 Z 動增益放大，形成最終的發射信號TX1 TX1X TX2 TX2X經過濾波后送入PA進行功率放大AUDIO(4:0)AUDIO SFrom2.8VXAUDIO6)XAUDl6 XAUUIU(4)VION9J7GN1.8VM11M8MIOPUSL B13PUSL(2)zlF9哎字語音TO UPl|AUDUEMCTRL(O)B9 tAUDUEMCTRL(I)A8 QAUDUEMCTRL(2)AGAUDUEMCTRL B7ISIMIF(O)A4“l$IMIF B4l$IMIF(2)A3IACCDIF(2)B5IACCDIF 04 *IACCDIF(4)A6aUDQDATA(Q) AUDIODATA(I)UEMINT CBUSCLK CBUSDATA CBUSENXSIMIODAI SlMlOCLKI SIMIOCTRLIMICDATAVDD23P11AUDQ(O)AUDIO XAUDIO(O)N10XAUDI0(1)P13XAUDIO(2)GND丄MBU$FBUSTXOFBUSRXOVDACRXVSACRXMBUSTXIMBUSRXIFBUSTXIRXIINP RX