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From: Junji Umeno <umeno@elwsc.co.jp>
To: "alsa-devel@lists.sourceforge.net" <alsa-devel@lists.sourceforge.net>
Subject: Can't set less than 48k rate in the Intel-ICH4	(AD1981B)
Date: Thu, 21 Sep 2006 13:05:46 +0900	[thread overview]
Message-ID: <20060921130546.02f871fe@localhost.localdomain> (raw)

Hi,

I can't set less than 48kHz rate for capture sampling.
In my case,
Alsa prepares 4 pcm devices, 
and I use the first 0-0 and the 4th 0-3, each playback and capture.
But when I set to the 3rd less than 48k rate, 
Alsa shows error,"cannot set sample rate".
On the other way, 
the 1st can be set less than 48k rate as a capture port. 
Playback use is no problem.

The Intel ICH4 in my laptop TP/R50e seems to have Analog Devices AD1981B as AC'97 Codec, alsamixr says. 

AD1981 spec sheet
http://www.analog.com/en/prod/0,2877,AD1981B,00.html

With the "PCM ADC RATE REGISTER" in the spec sheet,
we can be supported of from 7k to 48k rate.

What does Alsa do for that?
Does anyone knows ?

Thanks,
Junji

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             reply	other threads:[~2006-09-21  4:05 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-09-21  4:05 Junji Umeno [this message]
2006-09-21  7:39 ` Can't set less than 48k rate in the Intel-ICH4 (AD1981B) Clemens Ladisch
2006-09-22  4:23   ` Junji Umeno
2006-09-22  9:43     ` Takashi Iwai
     [not found] <0b2fce9ae18b088cb0ffadb5211068c7@localhost.localdomain>
2006-09-21  2:37 ` Junji Umeno

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