Firmware in C for the TLV320AIC15

Hi everybody,

I use aCODEC TLV320AIC15 chip with a DSP TMS320C5402 (McBSP1) but i have 2 problems:

First, my current driver not perform correctly : Not good relation beetween FS clock and MCLK (the N/M/P values read in CR#4 is Ok), the DRRx1 register value is fixed, ...
I think that is a wrong initialisation Control Register sequence, it's why I'm looking for a sample driver written in C to drive TLV320AIC15. Do you have it ?

Second, I don't understand the relation beetween the output/input data from ADC/DAC. For example, with a ADC input PGA gain = -12dB, if the ADC returns the value +3000 what is the input voltage ?

Thanks for your help

Eric