How can I write into registers of Audio codec TLV320AIC3106

How can I write/read to/from Audio codec registers?

First please download a datasheet for TLV320AIC3106 and have a look on simplified block diagram (page 3) and then typical circuit configuration (page 18).

http://www.ti.com/lit/ds/slas509e/slas509e.pdf

For write/read to registers use I2C interface (SCL, SDA) and connect it with some processor. Have a look on connection TLV320AIC3106 and TMS320C6748 on lcdk in schematics from attached link. (page 7 and 10)

http://processors.wiki.ti.com/images/6/69/OMAP-L138_C6748_LC_Dev_Kit_Ver_A5_.zip

You send via I2C command words, that enables you to write and read to registers.

to read: send the register address

to write: send the register address+ data

Please download the starterware from an attached link

http://software-dl.ti.com/dsps/dsps_public_sw/c6000/starterware/01_20_04_01/index_FDS.html

and go to: C6748_StarterWare_1_20_04_01/examples/lcdkC6748/mcasp

there are the drivers for AIC and in codecif.c you can find the read/write to register routine for AIC using I2C.

I want to disable effects, what I should do?

You schould write 0 to bits D3 and D1 of Audio Codec Digital Filter Control Register, which is 12th  register on page 0.

You can do it so:

unsigned char reg_data;

reg_data=CodecRegRead(SOC_I2C_0_REGS,12);

reg_data&=0xF5;

CodecRegWrite(SOC_I2C_0_REGS,12,reg_data);

It should helps you in your work.

Best regards

Petr Duga