Interfacing TMS320F28xx with AD73311 codec

Hello all,

I need help on how to interface AD73311 codec with TMS320F28xx through
McBSP.
I've read AD73311.pdf but still can not understand what is a reason to
send every word two times.
If someone has any experience or source code welcome to chat. 

tnx

Unomano wrote:

> Hello all,
> 
> I need help on how to interface AD73311 codec with TMS320F28xx through
> McBSP.

Don't use AD733xx. It is a very lousy but expensive codec. Use any of 
TLV320AICxxx codecs.

> I've read AD73311.pdf but still can not understand what is a reason to
> send every word two times.
> If someone has any experience or source code welcome to chat. 
> 

Vladimir Vassilevsky

DSP and Mixed Signal Design Consultant

http://www.abvolt.com

pcb is already designed so i can not change it:(

Vladimir Vassilevsky wrote:
> Unomano wrote:
>
> > Hello all,
> >
> > I need help on how to interface AD73311 codec with TMS320F28xx through
> > McBSP.
>
> Don't use AD733xx. It is a very lousy but expensive codec. Use any of
> TLV320AICxxx codecs.
>
> > I've read AD73311.pdf but still can not understand what is a reason to
> > send every word two times.
> > If someone has any experience or source code welcome to chat.
> >
>
> Vladimir Vassilevsky
> 
> DSP and Mixed Signal Design Consultant
> 
> http://www.abvolt.com

> 
> I need help on how to interface AD73311 codec with TMS320F28xx through
> McBSP.
> I've read AD73311.pdf but still can not understand what is a reason to
> send every word two times.
> If someone has any experience or source code welcome to chat. 
> 

Are you using only one codec or two ?
The 73322 is 2x 73311 here you send every command 2 times because the
codecs are daisy chained
We are using here the 73322 and configuring it is a mess, (but we also 
have the chip on the PCB yet ;-)

Markus Greim