Re: GPIO connections for the M-Audio Revolution 5.1

[Jochen Voss <voss@seehuhn.de>]

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Hello Takashi,

On Tue, Aug 08, 2006 at 12:21:37PM +0200, Takashi Iwai wrote:
> The document for 7.1 was not publicly released.  And no known document
> for 5.1.  You should ask M-Audio about it.

I will be away for a few days so now is a bad time.
But I will try to ask them once I am back.
Is there a know contact person, or is the plan
to just search through their web page for a feasible
communication channel and then use this?

> > 1) The ice1712/revo.h header file (shared by Revolution 7.1 and 5.1)
> > defines the following:
> > 
> > #define VT1724_REVO_CCLK	0x02
> > #define VT1724_REVO_CDIN	0x04	/* not used */
> > #define VT1724_REVO_CDOUT	0x08
> > #define VT1724_REVO_CS0		0x10	/* not used */
> > #define VT1724_REVO_CS1		0x20	/* front AKM4381 chipselect */
> > #define VT1724_REVO_CS2		0x40	/* surround AKM4355 chipselect */
> > #define VT1724_REVO_MUTE	(1<<22)	/* 0 = all mute, 1 = normal operation */
> > 
> > Why are the "not used" ones there?
> 
> Why not? :)

Because they are not used?

> > Note that 0x80 is not mentioned in the header file.  Is this a
> > problem?
> 
> Might be.  The code was originally written for Revo 7.1, and I have no
> revo 5.1.  Just heard that it works so.

Playback works fine.  Capture does not.

Many thanks,
Jochen
-- 
http://seehuhn.de/

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