TAS5706B driver

Saurabh Patel

Intellectual 590 points

Other Parts Discussed in Thread: TAS5706B, TAS5706, PCM5122

Hi,

I want driver souce for TAS5706b audio power amplifier chip.

Thanks,

Saurabh

over 12 years ago

0 Ravi Singh over 12 years ago

TI__Mastermind 22965 points

Hi Saurabh,

Which driver are you refering to? Is it for the GUI tool?

-Ravi

0 Saurabh Patel over 12 years ago in reply to Ravi Singh

Intellectual 590 points

Hi,

We have used TAS5706b audio amplifier chip with ARM processor.

We are controlling the Audio output with TAS5706b.

I need basic driver code for this. Any document discribes the base initialization and interface that also works for me.

- Saurabh

0 Ravi Singh over 12 years ago in reply to Saurabh Patel

TI__Mastermind 22965 points

Saurabh,

Sorry we do not have a driver for the TAS5706. If a list of I2C commands will help, these can be generated through the GUI.

-Ravi

0 Saurabh Patel over 12 years ago in reply to Ravi Singh

Intellectual 590 points

Hi,

Ravi

Can you provide me minimal souce code or steps with with i can test?

There is no other document than the tas5706b.paf datasheet?

Thanks,

Saurabh

0 Ravi Singh over 12 years ago in reply to Saurabh Patel

TI__Mastermind 22965 points

Hi Saurabh,

The following set of I2C commands will enable the TAS5706b to play audio..(with valid supply level's & I2S input data).

0x1B x00 (Trim Register, note read-back will be xC0)

0x05 x00 (Exit Shut-Down)

0x07 x?? (Unmute & set volume). The "??" is to be replaced by the desired volume level. e.g. x30 will set a 0dB master volume.

-Ravi

0 Saurabh Patel over 12 years ago in reply to Ravi Singh

Intellectual 590 points

Hi,

Ravi

I have followed the steps which you have mentioned. But still I am not getting the sound.

My hardware connection is the proper, I am transering data through I2S bus.

My system uses Android as a OS so, I need to register this codec in to ALSA.

I need more information.

Thanks,

Saurabh

0 Don Dapkus over 12 years ago in reply to Saurabh Patel

TI__Guru**** 189401 points

Hi, Saurabh,

Ravi is on a much-deserved vacation.

Have you isolated this to a hardware problem or a software problem?

-d2

0 Saurabh Patel over 12 years ago in reply to Don Dapkus

Intellectual 590 points

I am able to get I2C working perfectly I can read and write system registers.

MY setup is like

SDIN1 --> TXD

SCLK --> TXC

MCLK, LRCK --> TXFS

I have connected Output ports in BTL mode.

OUT_A1, OUT_A2 are connected to JACK1.

OUT_B1, OUT_B2 are connected to JACK1.

OUT_C1, OUT_C2 are connected to JACK2.

OUT_D1, OUT_D2 are connected to JACK2.

- Saurabh

0 Saurabh Patel over 12 years ago in reply to Saurabh Patel

Intellectual 590 points

Hi,

Still I am not getting sound output from TAS5706.

There will be any issue if i have connected MCLK and LRCLK to same clock signal.

How to verify that audio data is comming to input port by reading status register value?

Same thing how to verify the data is transfed to the output port by reading status register?

Hope i can get quick response...

Thanks,

Saurabh

0 Ravi Singh over 12 years ago in reply to Saurabh Patel

TI__Mastermind 22965 points

Hi Saurabh,

Can you please list the I2S clock frequencies being input to the device?

The clock frequencies (and the ratio's) supported by the device are listed in the register 0x00 description.

MCLK & LRCLK can not be the same signal.

You can check for clock error's by reading the error regster 0x02 (clear by writing 0x00 before reading). There is no register read-back to verify audio status.

Do you see PWM waveform at the device outputs (pre-filter)? If so, what is the measured PWM frequency?

-Ravi

0 Saurabh Patel over 12 years ago in reply to Ravi Singh

Intellectual 590 points

Thanks for your quick reply.

0 Saurabh Patel over 12 years ago in reply to Saurabh Patel

Intellectual 590 points

Hi,

Can give same clock to MCLK and SCLK?

Thanks,

Saurabh

0 Ravi Singh over 12 years ago in reply to Saurabh Patel

TI__Mastermind 22965 points

Hi Saurabh,

On the TAS5706B, a 64*Fs clock can be given to both MCLK & SCLK, if the following two conditions are met.

1.) LRCLK = 44.1/48KHz

2.) AM-Avoidance mode is NOT used.

-Ravi

0 Jehanzaib Karim over 11 years ago in reply to Ravi Singh

TI__Intellectual 830 points

Does the TAS5706B eval board allow the use of a GUI tool to experiment with DRC/EQ, as with PCM5122’s DRC/EQ?

Audio

Audio forum

TAS5706B driver