Wanted: Sound chip interfaced with pic


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  1. #27
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    Oct 2004
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    M25P32 PIC Audio v1.0
    Warning: other compiler.
    PBP's support of Longwords makes porting more feasible.

    Is this going to be a serial DAC or a parallel DAC? 16 bit DAC or 8 bit DAC?
    M25P32 PIC Audio supports both 16 bit and 8 bit serial DAC.

    So, do you have enough PIC cycles left over to shift that data in and/or out using the firmware?
    Does 8 bit and 16 bit at 44k, Ulaw compression at 32k and IMA compression at 22k.

    The Basic compilers have safe reliable built in commands
    such as SHIFTIN, SHIFTOUT and ADCIN but a great deal of
    speed can be gained by use of the registers.

    I am presently in final stages of an SD PIC iPod.
    8 bit stereo 44k and Nokia 6100 GLCD with scrolling menu, in data long file names, and BMP pictures.
    All done in BASIC with a PIC18F452 and SPI interface between the PIC, SD card and the GLCD.
    DAC's are parallel.
    Sequential read of data.


    Norm
    Last edited by Normnet; - 7th September 2008 at 20:25.

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