Ken Nakata wrote:
> On Tue, 13 Jul 1999 19:45:46 -0700 (PDT), Colin Wood <cwood@ichips.intel.com> wrote:
> > Ken Nakata wrote:
> > > On Tue, 13 Jul 1999 19:58:13 -0500 (CDT), Frederick Bruckman <fb@enteract.com> wrote:
> > > > 
> > > > Do you have any information on the Singer codec in the AV macs? All
> > > > I've been able to find so far is the code name of the chip.
> > > 
> > > I do.  Singer is Apple's code name, but it's actually a codec chip
> > > developed and sold by another company (I think the company was called
> > > ITT or something).  I downloaded the PDF datasheet off the Net a while
> > > ago
> > oooohhhh....that'd be very cool.
> 
> Ok, I was wrong.  I found it!  Go to:
> 
> http://www.itt-sc.de/pages/product_documentation/multimedia/asc.html
> 
> It says ASC 3553O, but it is the Singer chip.  It's ASC 3553O instead
> of ASCO 2300 only because they've changed the IC type designation from
> ASCO 2300 to ASC 3553O!

i've got it, thanks!  this is pretty cool.  now i just have to figure out
how to access the silly thing...
 
> BTW, Apple's _Quadra 840AV and Centris 660AV Developer Note_ says, at
> page 16:
> 
> 	The Singer is an I/O chip that constitues a 16-bit digital
> 	sound codec.  It conforms to the IT&T ASCO 2300 Audio-Stereo
> 	Codec Specifications. ...
> 
> It sounds like there's a codec standard or something called ASCO 2300,
> or the Singer is an ASCO 2300 compatible chip, but if you open the
> case, you'll find a chip with the number ASCO 2300 silk-printed on
> top.  At least that's what's sitting on my Q840AV's logic board.

sounds good to me...now to see if i can come up with a click or a beep or
something :-)

later.

colin