From mboxrd@z Thu Jan  1 00:00:00 1970
From: James Courtier-Dutton <James@superbug.co.uk>
Subject: Re: [PATCH 1/2] ca0106 playback 44100Hz
 support	to	SPDIF and	playback	format & rate constraints
Date: Tue, 02 Sep 2008 22:18:03 +0100
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To: Ben Stanley <Ben.Stanley@exemail.com.au>
Cc: Takashi Iwai <tiwai@suse.de>, alsa-devel@alsa-project.org
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Ben Stanley wrote:
> +		/* We only support 44100 to spdif, not to DAC.
> +		   (FIXME WHY?)*/

WHY?  Because the DAC cannot be clocked at 44100, only 48000 and 96000
from the CA0106 chip.
The SPDIF can be clocked at 44100.
It is a hardware limitation.

Kind Regards

James