An ideal word clock source would be simply a 3.3 or 5V logic signal with a 100 ohm resistor in series. The impedance doesn't matter, that's just to protect you from a short. You could also put a ferrite in series to slow the edge, since a sharp transition is not needed or desirable here.
You should test it with a function generator to get an idea how it works - and you can make fun sounds using the sweep knobs! What Transporter does with this signal is multiply it up to the required internal MCLK. Then all other clocks (LRCK, BICK) are derived from that MCLK, the same as they would be from an internally generated MCLK. It is really a "dumb slave" to whatever clock you give it. If your DAC is smart enough to decipher the incoming S/PDIF channel status, you could set the outgoing clock accordingly as TP will indicate the correct playback frequency in those bits. I'm not aware of any DACs that actually do this - AFAIK they all require you to set manual toggle switches which I think is pretty hokey. Once you have something hooked up, try putting a scope on 1) Transporter's MCLK and 2) your internal oscillator. They should be synchronized, with some arbitrary but constant phase offset. PS there is no TP3. There's TP and SB3. See: http://wiki.slimdevices.com/index.php/HardwareComparison -- seanadams ------------------------------------------------------------------------ seanadams's Profile: http://forums.slimdevices.com/member.php?userid=3 View this thread: http://forums.slimdevices.com/showthread.php?t=62747 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
