사용자 설명서차례Contents3Figures5Tables6Document History7Introduction8Related documents8Terms and abbreviations9Type approval12Safety precautions14Product concept16MC46 key features at a glance17Circuit concept20Application Interface21Operating modes22Power supply24Power supply pins on the board-to-board connector24Minimizing power losses25Monitoring power supply25Power up / down scenarios26Turn on MC4626Turn on MC46 using the ignition line /IGT (Power on)27Timing of the ignition process28Turn on MC46 using the POWER signal29Turn on MC46 using the RTC (Alarm mode)29Turn off MC4630Turn off MC46 using AT command30Maximum number of turn-on / turn-off cycles31Emergency shutdown using /EMERGOFF pin31Automatic shutdown32Temperature dependent shutdown32Temperature control during emergency call33Undervoltage shutdown if battery NTC is present33Undervoltage shutdown if no battery NTC is present34Overvoltage shutdown34Automatic GPRS Multislot Class change35Charging control36Battery pack characteristics37Recommended battery pack38Implemented charging technique39Operating modes during charging40Charger requirements41Power saving42No power saving (AT+CFUN=1)42NON-CYCLIC SLEEP mode (AT+CFUN=0)42CYCLIC SLEEP mode (AT+CFUN=5, 6, 7 and 8)43Timing of the /CTS signal in CYCLIC SLEEP modes43Wake up MC46 from SLEEP mode45Summary of state transitions (except SLEEP mode)46RTC backup47Serial interfaces48Features supported on first and second serial interface49Audio interfaces51Microphone circuit52Speech processing53DAI timing53SIM interface55Requirements for using the CCIN pin56Design considerations for SIM card holder57Control signals58Inputs58Outputs59Synchronization signal59Using the SYNC pin to control a status LED60Behavior of the /RING0 line (ASC0 interface only)61Antenna interface63Antenna installation63Antenna pad65Suitable cable types65Hirose antenna connector66Electrical, reliability and radio characteristics70Absolute maximum ratings70Operating temperatures70Electrical specifications of the application interface71Power supply ratings76Current consumption during transmit burst77Electrical characteristics of the voiceband part78Setting audio parameters by AT commands78Audio programming model79Characteristics of audio modes80Voiceband receive path82Voiceband transmit path83Air interface84Electrostatic discharge86Reliability characteristics87Mechanics88Mechanical dimensions of MC4688Mounting MC46 onto the application platform91Board-to-board connector92Mechanical dimensions of the Hirose DF12 connector93Adapter cabling93Heat sinks and thermally conductive tapes94Test conditions and results94Reference Approval96Reference Equipment for Type Approval96Compliance with FCC Rules and Regulations97List of parts and accessories98크기: 1.85메가바이트페이지: 99Language: English매뉴얼 열기