红米4A L1&L2 逻辑框图&元器件分布图U1101MSM8937AP&BPGPSLCD5.0 in 1280*720CTPMain Camera13MPFront_Camera5MPTP I2C4 Lanes CSI02Lanes CSI14 Lanes DSISDC1EBI0U1801 LPDDR3+ EMMC2GB + 16GBPRXDRXU4501WCN3615BT/WIFI/FMWLAN_BB_IQCLK from PMUFL4501WL_BT_RFIOWL_CMDU3301ANT SW&GSM PAU3000WTR2955WTR0_PRXBB_IQWTR0_DRXBB_IQGPS_BB_IQWTR0_TXBB_IQTXPRXPRX B3/B5/B7/B8/B20GPSU4901GPS-LNAT/RXTXRXT/RX芯片位号供电控制信号时钟U2DRX-SWDRX_B1/B3/B4/B5/B8/B20/B39/B40DRXRX-SWRFFE1FLASH LEDSDUIM DATAJ2601TFUIM1/2U3203L/M/H PATX B1/B2/B3/B4/B5/B7/B8/B20/B34/B39/B40/B41TX GSM_HBTX B1/B2/B3/B34/B39TX B7/B38/B40/B41TX B5/B8/B20RFFE1PRX B40/B41PRX B40/B41RX-SWPRX B1/B4PRX B34/B39/B2SENSOR I2CSENSORLP-SensorM-SensorGyroscopeCLK from PMUCLK from PMUfrom U0701TX B5 B8 B20 GSM_LBTX B5/B8/B20GRFCU3602RX-SWDRX B7/B41from U2102VSP/VSN from U903BL LED from U901USB_VBUSU5 SWChargerDCDCsLDOsX070119.2M USB PWR_KEYUSB_DP/DMSPMISMPIU0701PM8937PMUBB_CLKRF_CLKAUDIORECEIVERMMICHEADSETVIBRU2101SPK-PASLEEP_CLKSU1901RGBLED DRVLED I2Cfrom U0701 VREGL10RFFE5D2501INFAREDLEDSINFARED_DRVCDC_PDMU4502U3DRX-SWGRFCRFFE1U2201SW

红米4A L1&L2 逻辑框图&元器件分布图LED2401FLASH LEDJ4DRX ANTJ2Main CameraJ2701Side KeyJ2102LCD BTBJ501BATT CONU3301ANT SWGSM PAU3203L/M/H PAU3000WTRJ4901GPS ANTJ2301CTP ZIFU3DRX SWJ4501WL/BT ANTMIC2101S MicU4501WIFI/BT/FMU2101AUDIO-AMPBOTU3101RF CableFSNJ3DRXTEST CON U2201Analog SwitchU5CHGU901LCD BL DriverU903LCD VSP/VSNTP36VBATTP36BAT_CON_IDTP31BAT_THERMU2102FLASH LED DriverU1901RGBLED Driver

红米4A L1&L2 逻辑框图&元器件分布图J2601SIM1/2/SDJ6B-FPCX070119.2MHzU0701PMU&AUDIOU1801LPDDR3 + EMMC 2GB + 16GBVIB301VIBRU1101AP&BPREC2101ReceiverD2501INFARED LEDU2503LP-SensorJ2401HEADSETTOPU2502M-SensorJ2202Front CameraU2501GyroscopeTP5VBUS_USB_INTP4USB_PMI_DPTP3USB_PMI_DM

红米4A L1&L2 逻辑框图&元器件分布图涉及的英文翻译如下表索引缩写释义索引缩写释义索引缩写释义13MP1300万像素GPS全球定位系统RECEIVER受话器（一般指听筒）ANT天线GSM全球移动通信系统RF射频AMP放大器GPIO通用输入输出RST复位信号Analog Switch模拟开关Gyroscope陀螺仪RF Cable射频线缆接口AP应用处理器HB高波段RFFE射频前端总线AUDIO音频HEADET耳机SENSOR传感器B3第3波段I2C两线制串行控制总线SPI串行外围接口（通信总线）BB基带IQ同相、正交Side Key侧键BL LED背景灯INFRARED LEDS红外发光二极管SPK扬声器B-FPC软性印刷电路板（连接副板）Lanes线路SLEEP CLK睡眠时钟BOT底面LB低波段SPMI电源管理总线BP基带处理器LCD液晶显示器SW开关BT蓝牙LED发光二极管SDCCPU与EMMC通信线路BTB板对板（连接器）LNA低噪声放大器TCXO有温度补偿的晶体振荡器CON连接器L/M/H AP多模 PATOP上面CSI串行照相数据接口LP Sensor光线和距离传感器UIM用户识别模块CTP电容式触屏控制LPDDR低功耗双速率随机存储器USB-DP差分信号（+）clock（CLK）时钟LDO低压差线性稳压器USB-DM差分信号（-）CHG充电Main Camera主相机USB通用串行总线DRX分集接收MIC麦克风BATT电池DSI串行显示数据接口M-Sensor电子罗盘VIBR振动器CDC_PDM音频模块与CPU通信总线PA功率放大器VBUSUSB供电DATA数据POP叠层封装VSP液晶驱动电源（+）DCDC直流变直流（电源）PMU电源管理单元VSN液晶驱动电源（-）DRV驱动PRX第一接收WTR射频收发器（中频）EBI通信总线（DDR和CPU传输）PWR_KEY电源键WL_CMD通信总线（FM/BT/WIFI和CPU间）EMMC嵌入式多媒体存储卡WIFI无线局域网Flash LED闪光灯ZZIF零插拔力（连接器）FM调频Finger Print-Sensor指纹识别传感器RGMH红米3S逻辑框图，英译汉对照表WVUTIFESDCBLAP