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U350—发送压控振荡器;U360—发送调谐(TXVT)管;U390—功率控制管;U400-DCS、PCS频段切换控制管;U501—振动马达驱动管;U504—红外通信管;U701—闪存储存器(FLASH);U702—暂存存储器;U800—无线通信处理芯片(WHITE CAP)。 CPU控制内外各芯片键盘LCD照明、振子,通过SPI接口对U900和U200编程等;U900—电源模块(GCAP)。主要功能:电源供给、D/A转换、收发高放充电控制、SIM卡联络;U902—外部喇叭推动功放管;U903—产生-5V,输入Q370,实现功放控制用管;U904—电源管。输出-10V电压;U906—深度睡眠延迟电路,它和CR912二极管组成,使DCS频段延迟一
U350-sending voltage-controlled oscillator; U360-sending tuning (TXVT) tube; U390-power control tube; U400-DCS, PCS band switching control tube; U501- vibration motor drive tube; U504- infrared communication tube; (FLASH); U702-temporary memory; U800-wireless communication processing chip (WHITE CAP). CPU control both inside and outside the chip keyboard LCD lighting, oscillator, programming U900 and U200 through the SPI interface, etc .; U900-power module (GCAP). Main functions: power supply, D / A conversion, send and receive high charge control, SIM card contact; U902- external speaker to promote the power amplifier tube; U903- produce -5V, input Q370, to achieve power amplifier control tube; U904- power tube. Output -10V voltage; U906 - deep sleep delay circuit, which and CR912 diode, the DCS band delay of a