User's Manual

3.2.6 Baseband units
The baseband units for M10 include MT6223D and SST34HF.
1) MT6223D (MT6223D is integrated Digital baseband and analog baseband).
Baseband architecture comprises mainly two chips: MT6223D and Combo Flash.
MT6223D is an entry level chipset solution with class 12GPRS/GSM modem. It integrates not only analog
baseband but also power management blocks into one chip and cangreatly reduce the component count and
make smaller PCB size. Besides, MT6223D is capable of SAIC (Single Antenna Interference Cancellation)
and AMR speech. Based on 32 bit ARM7EJ-STM RISC processor, MT6223Dprovides an unprecedented
platform for high quality modem performance.
Microcontroller Unit (MCU) Subsystem - includes an ARM7EJ-S RISC processor and its accompanying
memorymanagement and interrupt handling logics.
 Digital Signal Processor (DSP) Subsystem - includes 2 DSP cores and their accompanying memory,
memorycontroller, and interrupt controller.
 MCU/DSP Interface - where the MCU and the DSPs exchange hardware and software information.
 Microcontroller Peripherals - includes all user interface modules and RF control interface modules.
 Microcontroller Coprocessors - runs computing-intensive processes in place of Microcontroller.
 DSP Peripherals - hardware accelerators for GSM/GPRS channel codec.
 Voice Front End - the data path for converting analog speech from and to digital speech.
 Audio Front End - the data path for converting stereo audio from stereo audio source
 Baseband Front End - the data path for converting digital signal from and to analog signal of RF
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