9-1SECTION 9 BLOCK DIAGRAMAFAMPSP1BUFFX1:CR-8347.9872MHzFY1101FBUFFSP1AFMUTESP11RCOMABTP90N1007AE20S1CI-VI/FAFAMP1VOL3PR11VOL3PR1BEEPDTESTDSCOUTBEEPOENTPTTKEYMNMEAO-NMEAO+NMEAI-NMEAI+VOLVSQLVL3VL3VPTTKEYMDIALADIALBKeyBoardCPUEEPROMRESETFRONT UNITIC1:STM32F101ZGT6DS1:888BK01012IC11:LA4628INT SPNJU7704F3BR24T256FJPTTLCDLMV358IPWD3:L1SS400IC14:Q4:L2SC4081MICHM-205BKEYMIC9:PC357N6JPHOTOCOUPLERNMEAI+NMEAI-HVL3V REG3.3VVCCNMEAO+Q6:L2SA1576IC2B:DECODERIC12:NJM2211MDSC DSC SWIC3:TC7W53FKDSCENCIC5B:TC7W02FUQ3:DTA114EUHVVCC5VQ5:L2SC40815VPWMLCDMODULEQ1:2SB1201Q2:L2SC4081BKLTCTRLDS2-10:L-C191KYCTIC6:SN74AHCT1G04COM1TXDBUFFBUFFCOM1RXDQ7:2SK880BUFFNMEAINMEAOBUFFA/DA/DD1:DZ2J091MIC10:LMV358IPWIC2A:IC701A:TC7S66FUIC704:IC4:NJM2830U1-331AEVOLLOGIC UNITBUSUARTUARTGPS(OPT)LCDICF3HM-195(OPT)NMEAinoutAIS_dtat(OPT)NMEA2000(OPT)PLLICA/DICEVOLICNoiSeCanselICEEPROMVoiceScram(OPT)DSC_DECODEATIS_DECODEDIALOUT_ExpandICDECODERATISIC13:NJM2211MWXDIAL UNITHM-205RBPTTKEYMMIC(#06,#07)IC7B:TC7WH14FKIC702A:M61545AFPIC7A:D5:4148UNMEAO-ISL81487IBZICF3COM1RXDCOM1TXDCLONETXCIC5A:TC7W02FUUARTUART UART UARTIC706:LMV321IDCKIC8:TC7S08FUCOMTXDCOMRXDCLONETXBUFFCLONERXBUFFIC17:SN74AHCT1G32CMDPWSWCLONERXCVOL UNITSQL UNIT(ATC7WH14FK