Connect with us

Micronas MAS3507D MP3 decoder IC on ISA?

Discussion in 'Electronic Basics' started by Kris Jones, Nov 10, 2003.

Scroll to continue with content
  1. Kris Jones

    Kris Jones Guest

    I was looking at the spec sheet for the Micronas MAS3507D MP3 decoder,
    http://www.micronas.com/products/documentation/consumer/mas3507d/index.php
    and I noticed that you can also use 8-bit parallel input.

    I was thinking about making a hardware MP3 player for PC/104
    interface, which is actually ISA.

    Could you just attach the MP3 decoder to an ISA bus and stream MPEG
    data to it in parallel?

    Am I crazy or would that work?

    It seems to me the biggest problem would be getting the timing to
    match up.
     


  2. I don't know anything about this IC, but based on what you've said above I
    think it should work. You'll need to address-decode the ISA bus (i.e.,
    allocate an ISA address to the MP3 IC) and just stream the music data to
    that address one byte at a time. You could also use a buffer RAM to ensure a
    stable timing.

    rgds,
    Costas
     
  3. Daniel  Simon

    Daniel Simon Guest

    Why not just use the printer port that your PC/104 computer is almost
    certainly already equipped with?
     
  4. Kris Jones

    Kris Jones Guest

    I thought about that kind of solution, and I just think it would be
    messier. First off it would make it a dongle, which I am not too fond
    of. Then there is the difference in speed. Then it would need an
    external power supply.

    I am also very fond of the PC/104 form factor. I have many
    single-board computers that have these slots. Sound cards in PC/104
    are hard to come by, and all I would want them to do is play MP3, so
    why not throw in a hardware decoder? Then you could play them on
    anything, even a 386! (And no, slow cpus aren't rare in embedded
    form-factors, Advantech still sells 386SX PC/104 cpu boards.)

    Also, if I were to start with an LPT solution first, the design would
    be very different. If I ever decided to move to ISA I would have to
    just scrap all the designs for LPT anyway.
     
  5. Kris Jones

    Kris Jones Guest

    Anybody know anything about developing for ISA and want to give me a
    hand?

    I'll probably need someone to write drivers for it also.

    If it turns out to be do-able, maybe it could become a commercial
    product... and of course you would get a percentage!
     
  6. If you provide the chip (PLC44), we can make the board for you.
    The board will probably be less than $5 (qty 100) without the chip.
    I emailed you with my real email ID.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-