Headphone output TAS5706

Saurabh Patel

Intellectual 590 points

Other Parts Discussed in Thread: TAS5706

Hi,

Speaker output is working with TAS5706.

Now I want audio output on headphone. We have connected HPSEL pin GND.

In this case what register do i need to chagne?

I have enable HP mode by changing system control register but still no output on headphone.

-Saurabh

over 10 years ago

0 Jacky Wang(QD) over 10 years ago

TI__Genius 9950 points

Hi Saurabh,

What's the value you write into 0x05 register? Have you changed the volume register 0x07 and 0x0C to leave MUTE state?

Have a try in below configuration:

Write 0x1B=0x00, read back 0xC0

Write 0x05=0x02, read back 0x02

Write 0x0C=0x30, read back 0x30

Write 0x07=0x30, read back 0x30

Thanks.

0 Ravi Singh over 10 years ago

TI__Mastermind 22965 points

Hi Suarabh,

Good to know you got the speaker output playing audio. -- For reference, can you please also post the changes you had to make to get the audio output working (from the clock issues you described on the other thread)?

-Ravi

0 Saurabh Patel over 10 years ago in reply to Jacky Wang(QD)

Intellectual 590 points

Hi,

Jacky

I have done same changes.

Stil no output.

-Saurabh

0 Jacky Wang(QD) over 10 years ago in reply to Saurabh Patel

TI__Genius 9950 points

Hi Saurabh,

Can you provide some output waveforms for HPR_PWM and HPL_PWM?

How do you connect these two pins to your headphone? Do you have any schematics?

Thanks.

Audio

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Headphone output TAS5706