From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: GPIO connections for the M-Audio Revolution 5.1 Date: Tue, 08 Aug 2006 15:07:10 +0200 Message-ID: References: <20060807203113.GA5305@tarte.seehuhn.de> <20060808104015.GA20149@seehuhn.de> <20060808111850.GB2922@localhost.localdomain> <20060808114033.GA3784@tarte.seehuhn.de> Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20060808114033.GA3784@tarte.seehuhn.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@lists.sourceforge.net Errors-To: alsa-devel-bounces@lists.sourceforge.net To: Jochen Voss Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org At Tue, 8 Aug 2006 12:40:33 +0100, Jochen Voss wrote: > > Hi Takashi, > > On Tue, Aug 08, 2006 at 01:23:27PM +0200, Takashi Iwai wrote: > > > AK5365, according to the spec (page 21) this one has volume control. > > > Maybe recording is just a matter of putting the volume up on this > > > chip? > > > > Ah, then 0x80 makes sense. It's possibly a chip-select for that ADC > > chip. > > I took out the card and had another look. I don't have any measuring > equipment, so I am limited to staring at the board. It might be, that > GPIO pin 0x80 is connected to pin 33 (CSN/CAD1) of the AK5365. Would > this make sense? Yes. > Do you know whether the card uses 3-wire control or I2C? My rough guess is 3-wire control, using the same CLK (0x02) and CIN (0x04) with a different CS (0x80). Or possibly CS0 (0x10) or CS2 (0x40) is used instead. Currently the driver resets all CS0-2 bits for a single AK4358 chip, but only one of them should be needed. Takashi ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642