Motorola 8900 User Manual - Page 32
Digital Block, Analog Block, CDMA Transceiver Block
UPC - 845374028836
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Architecture Overview The C24 consists of the following blocks: Digital Block • Micro-controller Unit (MCU) for system and user code execution. • Digital Signal Processor (DSP) for voice and data processing. • Serial communications interfaces. • USB driver interface • UARTs • UIM card • Digital audio (PCM) bus interface. • General purpose IO signals. Analog Block • Power Management IC (PMIC). • Internal regulators • 1 external regulator for customer use • Analog audio interface management. • Speaker, microphone • Alert speaker • Headset • Real Time Clock (RTC) subsystem. CDMA Transceiver Block • RF receiver. • Signal processing IC for transmit and receive CDMA data. • IC CELL/PCS RX filter. • IC Triplexer for CELL/GPS/PCS. • IC CELL/PCS duplexer. • IC 1.575 GHz GPS Low Noise Amplifier with Integrated Filter. • IC CELL/PCS LGA Termination Directional Couplers. • IC CELL/PCS 3x3 Power Amplifier Module. • IC CELL/PCS Tx Filter. 8 C24 Module Hardware Description December 15, 2008