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Help on ADAU1446 Eval board

Question asked by fernandes on Nov 12, 2012
Latest reply on Nov 19, 2012 by BrettG

Dear Sirs

 

I needing help on attached project in order to configure the ADAU1446 control and I have some additional questions.

 

The idea is mount a board with 1 adau1446 and 2 ad1939 codecs (8 mono balanced inputs x 16 mono balanced outputs).

In this project I wrote a basic routing with 6 x 8 layout.

 

My test board is EVAL-ADAU144xXEBZ REV C, and I am using the J18 with UsBi and Sigma Studio 3.7 x64, and 44.1 Khz Sampling Rate.

 

Questions:

 

1) How to configure the register control in order this project works fine with audio ? There are 9 windows on Sigma.

 

2) Regarding the final hardware what IC do I need to choose to control the clocks used ?

(Last simple project I use the codec as master and dsp as slave.)

 

Some mounts I will use just one codec + dsp and others full populated board.

 

3) If I need to improve my board adding another ADAU1146 in order to separate the input of ouput processing, how to set the clock ?

 

Codecs inputs ===> DSP 1 (input processing) ===> DSP 2 (output processing) ==> Codecs Outputs

 

4) After compiler my compiler_output.txt file

 

Instructions used:

3858          (out of a possible 4096 )

Modulo Data RAM used (X Memory):

5268          (out of a possible 8192 )

Non Modulo Data RAM used (X Memory):

28          (out of a possible 8192 )

Parameter RAM used (Y Memory):

1400          (out of a possible 4096 )

 

Instance                     
MipsInstDataCoeffOther


108%94%65%34%

 

But the INSTANCE MIPS NUMBER WAS (108%). I need some explanation about the MIPS. Whats the safe number in order to avoid locks

on DSP ?

 

Curious:

 

I put a simple project with 2 inputs and 2 output objects and a volume control to test board (with single band level meter) to test board, but I cannot hear audio. I've mounted the same framework on AD1940 eval and works. I suppose that the Register Control of Adau144x is not setup correctly.

 

I didn't modifiy the strapes on EVAL board.

 

Thanks for helping

 

Jean Fernandes

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