62.143.40.17
This Post Has Been Edited by the Author
In Reply to: RE: iPad and external DACs posted by soundchekk on August 17, 2012 at 01:57:52
A little progress.
I looked up the TI TAS 1020B datasheet.
Page 21. The EEPROM header got a field called MaxPower given in n * 2mA.
That's probably the relevant parameter in the firmware.
But that means 1 parameter = 1 harcoded value.
You most probably wouldn't be able to handle bus and external power with this.
The manufacturer would have to choose the worst case scenario (bus power).
On a first glance it looks to me that the 1020B would support 2 scenarios only.
Bus PS only or External PS only. A combined scenario wouldn't be possible.
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::: Squeezebox Touch Toolbox 3.0 and more ::: by soundcheck
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