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Subject: Re: play WAV? PS. 3587
From: BlueChip (
Date: 2003-09-05

PS. I suppose it would have helped if I had looked at the right datasheet


...note to self, there is no 108MHz R4000-based MIPS CPU in my jukebox - LOL

>In no specific order:
>If you want to chat privately, I am happy to do so, email me your private
>IM account details, and I will IM you :)
>As far as I understand, and I have never confirmed this for myself, but
>then, I've never felt the need to ...USB is out of bounds - it just does
>what it does and all we can do is turn it on or off - so without building
>an external master - which is a respectable challenge, it's not going to
>happen :(
>Can you point me directly at the diagram to which you refer (including the
>source for the PDF you are reading) ...I cannot find anything like that in
>my PDF.
>If you can send a timed stream of 1's and 0's you can talk to any serial
>device. Digital I/O is precisely that - the factor I cannot yet include,
>is precisely WHAT features the dev kit will offer.
>>Interesting idea, but after looking at the block diagram, I didn't see a
>>lot of support for straight-thru translation. The chip is suited to inputting
>>from its ports (PCM, S/PDIF, analog, mp3 bitstream) and outputting to S/PDIF,
>>analog, mp3 bitstream with everything going through the encoder/decoder block
>>in the diagram. I don't see anything that allows a direct data feed from the
>>inputs to the hard drive in the chip. But it can, of course, accept such
>>"direct" data through the USB port.
>>I'm not seeing where the hardware would support offloading camera data to the
>>device. Blue, could you possibly elaborate? Maybe pop on IRC today and
>>fill me
>>On Thu, Sep 04, 2003 at 09:54:10AM +0200, claus wrote:
>> > BlueChip said:
>> > > The playback of PCM data is worth much more than just playing a
>> > > pre-recorded WAV file. I think the wildest use of this technology
>> would be
>> > > the ability to output specific numbers to the digital i/o for an
>> external
>> > > device - if we can also _capture_ stuff in "WAV" format ...with a
>> cheap and
>> > > simple device (possibly little more than an opto-isolator and a level
>> > > converter or two) it is not unreasonable to consider talking to the
>> serial
>> > > interface on your digital camera!? Now how cool is THAT?
>> >
>> > Go ahead BlueChip or like Nike used to say "Just do it!"
>> > - claus
>> >
>>David McIntyre
>>PGP Key fingerprint = CAB5 A73A 43FA 19E3 449D 20B8 25D7 FA84 8847 D6A7
>> for geek code, pgp key, etc.

Page was last modified "Jan 10 2012" The Rockbox Crew