If the DAC outputs the 11.2896 signal you should be able to feed it into the SB3. The SB3 takes a 3.3V logic signal so you either need that out of the DAC or a converter to get it to that spec. It would be dangerous to feed it a 5V clock, it might fry something.
Is this the only change? You plan on still using S/PDIF as the interface between the SB3 and the DAC? If yes I presume this means the DAC can be setup for running the Receiver in slave mode, or the DAC has a synchronous reclocker. If the above is true just sending the clock to the SB3 should work. I've bypassed the S/PDIF interface all together and sent I2S from the SB3 to the DAC (well actually left justified format). To implement the mod you'll need to know the specs on the clock coming out of the DAC, is it 11.2896 MHz? What is the voltage? Is it a logic level signal (low is ground) or AC coupled (symmetric around ground)? To do the mod unsolder the crystal, then find out which pad of the crystal goes to the input pin of the chip its connected to (its a standard logic gate chip), solder the clock wire to that pad. Theoretically you should unsolder the caps connected to the pad as well, but in reality it doesn't really matter since the DAC is reclocking the data anyway, getting the lowest jitter in the SB3 is not imperitive. Connect the clock ground to a handy clock reference point on the board. That should do it. John S. -- JohnSwenson ------------------------------------------------------------------------ JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=32761 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
