GSM__手机软件方案.ppt

联发科技简介 1997年成立,全球第五大集成电路设计公司 (台湾第一大), 年营业额为8亿美金 全球最大之光盘及DVD播放机芯片组制造商 研发及技术中心: 台北 新竹 深圳 安徽合肥 无线通信部门于2000年成立,研发手机基带/RF芯片组及软件及发展平台,部门约200工程师 GSM Solution GSM 低端彩屏平台 GSM/GPRS 手机软件方案 GSM Solution Block Diagram GSM Development System Power Consumption – GSM reference phone Base-band chip Introduction MT6205 GSM Baseband MT6205 GSM Baseband Block Diagram Baseband Schematic overview Power on/off function Normal power on, Switch off charging, RTC alarm, Tools.. Charger function Charger selection, PMOS selection, Charging state diagram RTC function Accessory detection mechanism State diagram, timing diagram Keypad scan Keypad backlight LED (PWM1) Vibrator, Flashlight (GPIO) RGB color LED ( GPIO) LCM backlight LED (PWM2+GPIO) Audio (speech + hand-free + melody) function ESD MT6305 PMIC - Power Management IC PMIC Block diagram MT6119 RF Transceiver - 1 MT6119 RF Transceiver - 2 Radio Transceiver Block Diagram MT6119 RF transceiver introduction MT6119 Rx Block Diagram Very Low IF Architecture MT6119 Receiver performance Lowest power consumption 68mA Rx mode ( Rx only 29mA ) Image rejection DCS = 36dB ; GSM = 34dB Good IIP2 GSM = +45dBm ; DCS = +35dBm AM Suppression : GSM = -22dBm ; DCS/PCS = –24dBm High Rx Max Gain and Dynamic Range GSM = 108dB ; DCS/PCS = 105dB PGA 78 dB gain control Compared with Aero Lower Power Consumption Better Image Rejection Better AM Suppression cause of Good IIP2 High Rx Gain and High Dynamic Range MT6119 transmitter architecture MT6119 transmitter architecture Transmitter Frequency plan Divider 11 is first priority for my reference design IF fractional-N synthesizer fraction number 400 ( 2MHz ) , than it will change divider from divider 11 to divider 9 　 MT6119 transmitter architecture Transmitter Frequency plan MT6119 Transmitter specification MT6119 Transmitter specification Conducted Sensitivity Receiver Performance – GSM (1) Receiver Performance – GSM (2) Receiver Performance – DCS (1) Receiver Performance – DCS (2) Extreme Condi