EtherREGEN: The long development thread. [Some Gen2 dev. pics and update starting on page 92.]

[PeterSt]

14 minutes ago, Superdad said:

digital isolators (be they optical, RF, capacitive, GMR, etc.) must ALWAYS position them AFTER the USB input stage--on the I2S lines into the rest of the DAC.

 

14 minutes ago, Superdad said:

The sole exceptions are the couple of DAC makers who are using the (now discontinued) Silanna ICE08USB chip right at the USB input--before the XMOS or other USB processor (those are the $6K Auralic Vega G2, and the @PeterSt's NOS1a G3).

 

The latter does both. 

 

Which reminds me of something ...