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    Bb5 all ic general info.........

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    rejeev9977
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    Bb5 all ic general info.........

    Post by rejeev9977 on 25.05.09 3:44

    RAP3G

    RAP3G is a 3G Radio Application Processor
    Successor for TIKU (used in NOKIA 7600) with some technical improvements and additional features
    In general RAP3G consists of three separate parts:
    Processor subsystem (PSS) that includes ARM926 MCU as a main processor, Lead3 PH3 DSP and related functions
    MCU peripherals
    DSP peripherals
    RAP3G is running with NOS and takes care of all cellular modem activities
    RAP3G core voltage (1.40V) is generated from TAHVO VCORE and I/O
    voltage (1.8V) is from RETU VIO. Core voltage in sleep mode is lowered
    to 1.05V

    RETU

    RETU is the primary EM ASIC including following functional blocks:
    Start up logic and reset control
    Charger detection
    Battery voltage monitoring
    32.768kHz clock with external crystal
    Real time clock with external backup battery
    SIM card interface
    Stereo audio codecs and amplifiers
    A/D converter
    Regulators
    Vibra interface
    Digital interface (CBUS)
    RETU ASIC does not include security functions such as UEM(E,K)

    TAHVO

    TAHVO is the secondary EM ASIC including following functional blocks:
    Core supply generation (VCORE & VCOREA)
    Charge control circuitry
    Level shifter and regulator for USB/FBUS
    Current gauge for battery current measuring
    External LED driver control interface
    Digital interface (CBUS)
    TAHVO ASIC does not include security functions such as UEM(E,K)

    CMT Flash
    CMT Flash memory is used to store:
    MCU program code
    DSP program code
    Tuning values
    Certificates
    Capacity: 64Mbit
    Logic and supply voltage for NOR Flash is supplied from VIO (1.8V)
    Flash clock is 48MHz (192MHz/4)

    CMT SDRAM

    CMT SDRAM is mainly used as a dynamic data storage for MCU data
    Capacity: 64MBit
    SDRAM core voltage (1.8V) is generated by RETU’s VDRAM regulator
    I/O voltage (1.8V) is generated by RETU’s VIO regulator
    SDRAM clock is 96MHz (192MHz/2)

    OMAP 1710

    OMAP is the application processor running with Symbian operating system (EPOC)
    Platform for executing all user related application. Main interfaces:
    Camera interface
    Display interface
    Bluetooth interface
    MMC interface
    USB interface
    Keyboard interface
    X-Bus for communication with RAP3G
    OMAP is a standard ASIC designed by Texas Instruments and used also by other manufacturers of mobile phones and handheld PCs
    Core voltage VCORE=1.4V is generated by discrete SMPS, and is lowered to 1.09V in sleep mode
    I/O voltage VIO=1.8V is generated by RETU

    APE Combo Memory
    APE Flash is used to store application code and user data
    It is not possible to execute code directly from Flash -> executables need first to be loaded to DDR and run from there
    Capacity: 256Mbit (Flash), 256Mbit (DDR)
    Core voltage for DDR is VDRAM 1.8V
    VIO 1.8V is for DDR I/O voltage
    Both NAND core and I/O voltages are generated by RETU
    DDR clock is 110MHz (220MHz/2)
    Flash interface speed is 22MHz


    Product Specific Circuitries

    Front Camera
    The front camera is controlled and its data is collected by OMAP
    The I/O voltage of OMAP is 1.8V, and the one of the camera is 2.8V; therefore a level shifter is needed
    The camera is powered with two different voltages from LDO (Low-dropout voltage) regulators:
    VCAM 1.5V for camera digital circuits, and sensor A/D-converter
    VCAM2 2.8V for camera I/O, and sensor photo diode



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      Current date/time is 21.11.17 22:22