E680_电路原理培训

Page1of38E680原理Page2of38目录1.系统结构2.子系统2.1电源管理2.2时钟系统2.3复位系统2.4Watchdog系统2.5音频系统2.6BP存储器系统2.7AP存储器系统3.内部连接3.1NeptuneLTE和Bulverde3.2NeptuneLTE和PCAP3.3PCAP和Bulverde4.BP外围设备4.14.1SIM卡4.2键盘背灯5.AP外围设备5.1LCD5.2YamahaMIDIIC5.3数码相机5.4Tri-Flash和SD卡5.5蓝牙5.6键盘5.7USB5.8FM收音机5.9Boomer6.PCAP外围设备6.1网络LED指示6.2蓝牙LED指示6.3振动器7.外部接口7.1USB接口7.2充电器接口7.3耳机接口7.4AD转换接口8.BP/AP调试端口9.维修实例分析1.Page3of380.系统结构2.框图NeptuneLTEBulverdePCAP2BB_RDYMCU_INT_SWITCHTC_MM_ENBB_WDIBB_WDI2PRI_SPISEC_SPISTANDBY1STANDBY2STANDBYPWR_ENCLKINCLKIN2AudioMemory3208SIMCardMemory32+32MBFMradioLCDSDcardTri-flashCardBlueToothCameraMIDIKeypadEMUBUSRESET_MCU_BRESETBAPexternalmemory(6416)BP_STATEInternalbootPWR_ENINT0NBATT_FAULTPWR_FAILPage4of38板图正面背面SDCardBackupCellCE_BUS,forSWdebugonlySIMCardAPJTAGBPJTAGBatteryConnectorTri-flashConnectorLCDConnectorKeypadconnectorSideKeyRightEarspeakerconnectorPCAP2LouderspeakerconnectorCameraConnectorNeptuneFMradioPA+PACVCOBlueToothSideKeyLeftSideKeyLowerHeadsetSocketEMUConnectorABkeyConnectorScreenLockKey6408BulverdeMIDIICAPexternalmemoryPage5of382.子系统1.12.1电源管理PowersourcePowernameVoltagePoweronDefaultSPIsettingCurrentlimitDestinationNotesinP6ASW1VAP_CORE0.9~1.3V1.1V0000~0111400mABulverdeCoreShutdownwhenAPsleepsSW2VAB_MEM1.875V1.875V1101320mANeptuneCore,BPstackmemory,BulverdememorySamewithA760SW3V_BOOST5.5V5.5V11200mAInternaluseSamewithA760SW4NULLOFFOFFN/AN/ANULLNotusedV1VAB_IO2.775V2.775V000200mABase-BandInterfaceandAPIOSamewithA760V2V_AUDIO2.775V2.775V1100mAAudiosystemSamewithA760V3VAP_SRAM1.075V1.275V00075mABulverdeinternalSRAMV4VAP_LCD2.775V2.775V11150mAPowerforLCDmoduleAlwaysonV5NEP_VDDA2.775V2.775V1150mAPowerforNEP_VDDAAlwaysonV6VAP_CAMERA2.775V2.775V1100mAPowerforcameraAlwaysonV7VRF_TXRX2.775V2.775V1150mARFSamewithA760V8VAP_PLL1.275V1.275V00035mABulverdePLLV9VBB_REF1.575V1.575V0025mABase-BandreferenceSamewithA760V10V_RXTX_SYN5V5VN/A25mARFSamewithA760Vaux1VBT_RF1.875V1.875V00N/A,usingexternaltransistorBlue-ToothRFSamewithA760Vaux2VAP_SD2.775V2.775V10100mAVAP_SDVaux3NULL2.8VOFF101140mANULLVaux4N/A3.0N/A40mANULLNotusedPCAP2VSIMV_SIM1.875V/3V1.875V0/120mASIMCardSamewithA760VSIM2NULLNotusedVUSBVUSB_3_3_V3.3V3.3VN/A50mABulverde’sUSBtransceiverWhenUSB_VBUSis4.0VUSB_VBUSUSB_PWR5.0V5.0VN/A40mAUSBOTGpowersupplyUSB_PUUSB_PU3.3V3.3VN/AD+pullupWhenUSB_VBUSis4.0VV_HOLDNULLNotusedV_VIBNULLNotusedVPPNULLNotusedBatteryBatteryB+3.0~4.2V3.0~4.2V2APCAP2andPAPage6of38ExternalpowerUSB_PWR5V5V500mA(PC)1A(fastcharger)FromUSBhostorUSBchargerNote:1.VAP_CORE由软件调整以节省电能2.VAP_SD由软件控制开关3.VAP_PLL和VAP_SRAM由软件控制开关4.PWR_EN(反向)进入到NeptuneLTE的INT0管脚5.当Bulverde进入睡眠模式时VAP_SRAM会被关闭,但在内部SRAM中的内容仍可由Bulverde中的内部稳压器维持.Page7of381.22.2时钟系统BlueTooth32KhzBP-NeptuneAP-BulverdePCAP1/PCAP2AP_CLK32K_OUT(GPIO10)AP_CLK13M_OUT(GPIO9)MIDIIC13Mhz32KHz13Mhz26Mhz32KHzAP部分的可选32Khz时钟对软件没有影响.NoimpacttoSW.MIDIICFMradio32KhzPage8of381.32.3复位系统Note:GPIO极性与复位时序与A760相同.BlueToothBP-NeptuneAP-BulverdePCAPANDgateAP_nRESETBT_RESET(GPIO4889)MIDI_RESETNRESET_OUTnBB_RESET(GPIO82)PCAP_nRESETLow_BATT_BFlashMIDIICAPexternalmemory(MDOC)NRESET_OUTPage9of381.42.4Watchdog系统(结构与A760系列类似)BP-NeptuneAP-BulverdePCAP2ANDgateWDI_AP(GPIO430)BP_ROW5BB_WDIBB_WDI2WDOGLCD_DATA5(PE9)GPIO13GPIO3Page10of381.52.5音频系统TBDNSSP与ASSP(CLK,FRM和RXD)连接是为了支持话音录音.FLT_SEL逻辑表:FLT_SEL(GPIO80)音频滤波器低(0)关OFF–耳机音频通路高(1)开ON–扬声器音频通路车用适配器音频通路如下图所示:SCKASC2ASTDASRDACLK2FRM2RXD2TXD213bitsphoneCODEC16bitsstereoDACAUX_MICMICEXT_MICMICHeadsetMICA5HS_OUT_LA3PGAHS_OUT_RRLMonoMixerandgaincontrolBlueToothFMradioMIDIICNeptuneBulverdeCLK3FRM3TXD3RXD3NSSPASSPEarspeakerLouderspeakerLeftLouderspeakerRightHeadsetspeakerLeftHeadsetspeakerRightBoomerI2CD7~D0ControlledbySWControlledbySWControlledbySWFLT_SEL(APGPIO80)PGA_INPUTPage11of38SCKASC2ASTDASRDACLK2FRM2RXD2TXD213bitsphoneCODEC16bitsstereoDACAUX_MICMICEXTMICMICHeadsetMICA5HS_OUT_LA3PGAHS_OUT_RRLMonoMixerandgaincontrolBlueToothFMradioMIDIICNeptuneBulverdeCLK3FRM3TXD3RXD3NSSPASSPEarspeakerLouderspeakerLeftLouderspeakerRightHeadsetspeakerLeftHeadsetspeakerRightBoomerI2CD7~D0ControlledbySWControlledbySWControlledbySWFLT_SEL(APGPIO80)PGA_INPUTEMUconnectCarkit(easyinstall)D+D-D+D-MUX_1(APGPIO120)MUX_2(APGPIO119)RLMICPage12of38音频通路通话声音到听筒到扬声器到耳机听筒Bulverde(MP3)音乐到扬声器到耳机听筒调频收音机11M11M11M到扬声器到耳机听筒11MMIDI音乐/电话呼入振铃/闹铃到蓝牙11M11M游戏:MIDI发出的背景音乐,PCAP发出的前端声音游戏:MIDI发出的背景音乐,PCAP发出的振动信号11M11M从MIC录音注:如果耳机插入时需要在游戏时振动,耳机中的声音被终止转换到扬声器通路以给出振动从射频通路录音Page13of38耳机音频通路(单或左通道)耳机音频通路(右通道)扬声器音频通路(单或左通道)耳机音频通路(右通道)振动信号或游戏声音到扬声器音频通路(单或左通道)振动信号或游戏声音到扬声器音频通路(右通道)游戏声音到耳机音频通路(单或左通道)游戏声音到耳机音频通路(右通道)Page14of381.62.6BP存储器系统注:Flash(W18):片选–NeptuneLTE’sCS0_3SRAM:片选–NeptuneLTE’sCS1在旧板硬件中使用6408,P4E/F以后使用32081.72.7AP存储器系统Bulverde内部存储器:Flash(Tyax):片选–Bulverde’snCS0–在P4以后为32Mbyte时钟–Bulverde’sSDCLK[3]SDRAM:片选–Bulverde’snSDCS0时钟–Bulverde’sSDCLK[1]AP外部存储器:M-system’sMCP7:64MBflash+16MBSDRAMSDRAM管脚连接:M-sysPinNameBulverdepinnameA0toA11BUL_ADD(1-12)BA0,BA1BUL_ADD(23:24)DQ0~DQ15BUL_DATA(15:0)CLKBUL_SDCLK2CKEBUL_SDCKE/CSnSDCS3--OPTION2--GPIO21/RASBUL_nSDRAS/CASBUL_nSDCAS/WEBUL_nWEUDQMBUL_DQM1LDQMBUL_DQM0VDDVAP_MEMVSSGroundVDDQVAP_MEMVSSQGroundNCNCPage15of38