joelha;597447 Wrote: 
> Hi John,
> 
> Here's what I'm showing (below).
> 
> Momentary freq = 44103 Hz (0x2c.1a70)
> 
> Endpoint: 1 OUT (ASYNC)
> /QUOTE]
> 
> The momentary freq being 44103 means the asynchronous interface is
> working, the clock on the Touch is a little slower than the clock in
> the DAC. The Dac has told the driver to speed up the data rate
> slightly. 
> 
> This seems to indicate that the appropriate communication is happening.
> 
> 
> I would put the Touch into a state that is known to cause the ticks
> etc. Repeatedly look at the momentary freq and see if it changes when
> you have a pop or click. 
> 
> The overall upshot of this is that it seems to be working, the driver
> seems to be properly communicating with the DAC. 
> 
> The next test I would run is to try files at different sample rates and
> see if there are any different behaviors. In particular I would try the
> same song at 44.1 and 48. This make sure you use the two different
> crystals. If you are running into an issue with one of the crystals be
> fairly far away from the frequency the Streamer you MIGHT run into a
> problem with the feedback system not being able to lock on fast enough.
> By using 44.1 and 48 you use both crystals. You might also want to try
> 88.1 and 96 and see how they work as well.
> 
> John S.


-- 
JohnSwenson
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