On Thu, 13 Sep 2007, Roman Katzer wrote: > Hi all, > > I have a Linux system with MADI card (snd-hdspm). The settings can be > controlled by using the amixer command-line utility. > > Right now there's no MADI hardware connected, but I want to use the > word clock output to supply a clock signal to sync my hardware. For > this, I set the Sample Clock Source of the MADI card to be "Internal > 48kHz" - so the MADI is clock master and uses its built-in clock. No, the sample is undoubtedly the highest frequency square wave the system is able to put out, namely 24KHz. YOur scope time base is probably wrong. > > However, the word clock output outputs a 25kHz square wave (tested > with a digital scope), not 48kHz. Re-requesting the same sample rate > and clock source doesn't change anything. If I do go ahead and > request something above 96kHz the word clock output goes to roughly > 51kHz and stays there, even when trying to get a lower sample rate Yes, it is now a 48KHz square wave. > again. > > Can anyone help? > > Best regards, and thanks in advance! > Roman > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user > -- William G. Unruh | Canadian Institute for| Tel: +1(604)822-3273 Physics&Astronomy | Advanced Research | Fax: +1(604)822-5324 UBC, Vancouver,BC | Program in Cosmology | unruh@xxxxxxxxxxxxxx Canada V6T 1Z1 | and Gravity | www.theory.physics.ubc.ca/ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
