From: Liam Girdwood <lrg@kernel.org>
To: Richard Zhao <linuxzsc@gmail.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: ASOC: For SND_SOC_DAIFMT_IB_IF what is invert baseed on?
Date: Mon, 27 Oct 2008 11:26:51 +0000 [thread overview]
Message-ID: <1225106811.28382.111.camel@dell-desktop.example.com> (raw)
In-Reply-To: <1225104379.28382.104.camel@dell-desktop.example.com>
On Mon, 2008-10-27 at 10:46 +0000, Liam Girdwood wrote:
> On Mon, 2008-10-27 at 11:00 +0800, Richard Zhao wrote:
> >
> > But when wm8350 in i2s mode, it take SND_SOC_DAIFMT_NB_NF as LRCLK is
> > 0 for frame start.
>
> I2S frame start is the LRC going high (from low) to indicate left
> channel PCM data is available after the next bit clock.
>
Correction. I've just noticed my datasheet is wrong here.
I2S LRC Left = low, right = high.
So frame start is LRC going low from high.
Liam
next prev parent reply other threads:[~2008-10-27 11:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-25 16:31 ASOC: For SND_SOC_DAIFMT_IB_IF what is invert baseed on? Richard Zhao
2008-10-26 16:05 ` Liam Girdwood
2008-10-27 3:00 ` Richard Zhao
2008-10-27 10:46 ` Liam Girdwood
2008-10-27 11:26 ` Liam Girdwood [this message]
2008-10-27 13:24 ` Richard Zhao
2008-10-27 13:47 ` Liam Girdwood
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