Robin, do you think it would be similarly easy to get a TI tas5731m chip to 
work? http://www.ti.com/lit/ds/symlink/tas5731m.pdf


> On Aug 25, 2015, at 00:18 , Robin Scheibler <[email protected]> wrote:
> 
> After a lot of effort, I have finally solved this.
> 
> 
> 
> The problem was that the mcasp module can operate with synchronous or 
> asynchronous transmit and receive clocks. The default setting hardcoded in 
> the linux mcasp driver is synchronous. That means that both receive and 
> transmit use the transmit clock signals FSX and ACLKX.
> 
> 
> My board was sending the frame sync and bit clock only to the receive clock. 
> I could solve the problem by rewiring the circuit.
> 
> On Sunday, May 24, 2015 at 10:10:08 PM UTC+2, Robin Scheibler wrote:
> Hi Jack,
> 
> Thanks for the interest. Sure, I'd be happy to share the solution. I'm 
> planning to also release the schematics and PCB when things are working out.
> 
> The data sheet for the STA321MP is here: 
> http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00046002.pdf
> Thanks for catching that.
> 
> Cheers,
> Robin
> 
> On Sunday, May 24, 2015 at 6:37:23 PM UTC+2, Jack Fisher wrote:
> BTW, 
> 
> Your link is broken, here is the page I found - 
> http://www.st.com/web/en/catalog/sense_power/SC1756 
> Which chip is it, I see no 321mp? 
> 
> Jack
> 
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-- 
Rick Mann
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