14-3 BLOCK DIAGRAMFOR FM_TRANCEVEROPTION CONNECTORBUFFF_RXDRESTXDTXD_2RXD_2232_RX232_TXREFMODDMODFMDETDAFOUTAMODIN5VAPWR3.2VREG3.3VREG+5VCTRLBUFFIC251BNJM2115IC251ANJM2115BUFFBUFFIC253BNJM13404IC253ANJM13404RS-232C_DATAFOR FM_TRANCEVER CPUFLASH WRITERLEVELCONVERTQ305 XP4312Q306 XP4312IC351MAX3226RS-232CRESETMODEM2.4576MHzCPUIC151AMBE-2020DSPCODECLINEARCODECIC50AD73311Q400 2SA1586Q401 DTC144PSAVE+3VCTRL3.3V3.3V5VX101CR-708INVIC101TC7SHU0416.384MHz9.8304MHzX201CR-7603.2VIC204HD64F3687IC203S-80928CNMCIC252CMX589AD5Q50 2SA1586Q51 DTC1443.3VPSAVEIC2R1111N321BIC1S-812C33AMCVCC: 4.5-8.5VJ301LINEDATA BUS LINETX LINERX LINEVOLTAGE LINEExplanatory notes14 - 214-2 SEMICONDUCTOR INFORMATION• TRANSISTORS AND FET’S• DIODESBECBECE1C2B1C1E2B22SA1586 GR DTC144EUA T106 XP4312(Symbol: SG) (Symbol: 26_) (Symbol: 7T)A C A CMA2S111 MA2S728(Symbol: A) (Symbol: B)