TAS2770EVM: Volume control in purepath console?

Julio Apps

Part Number: TAS2770EVM
Other Parts Discussed in Thread: TAS2770

Team,

We need to drive a speaker at 1.5W and 3W using the TAS2770 EVM and the purepath console. How can this be done in the GUI?

over 4 years ago

0 Luis Fernando Rodriguez S. over 4 years ago

TI__Guru* 84915 points

Hi, Julio,

If you are just using PPC3 to adjust the output power level, you would need to play with the Volume Control, Amplifier Level and Limiter options until you get the output power that you are looking for. However, if you have an Audio Precision System, you can use it to regulate the output with the digital generator and regulation tools.

Please let me know if you have additional questions or comments on this.

Best regards,
Luis Fernando Rodríguez S.

0 Julio Apps over 4 years ago in reply to Luis Fernando Rodriguez S.

TI__Expert 3665 points

Luis,

thanks you for the feedback, i have asked my customer to join the conversation if he runs into any issues.

0 Julio Apps over 4 years ago in reply to Julio Apps

TI__Expert 3665 points

Luis,

Is there any way to read out the output power through the GUI?

0 Anuradha Balasubramanian2 over 4 years ago in reply to Luis Fernando Rodriguez S.

Prodigy 50 points

Hello,

Thanks for the response. Is there an option for a power monitor in the EVM GUI where I can check the power level ?

Thanks,

Anuradha

0 Luis Fernando Rodriguez S. over 4 years ago in reply to Anuradha Balasubramanian2

TI__Guru* 84915 points

Hello, Anuradha,

Welcome to E2E!

Unfortunately, there's no way to monitor the output power through the EVM GUI. The GUI is basically used to configure the registers in the TAS2770 and check the status of the different flags. In order to verify the output power, it is necessary to check the digital input and also the output load value. The digital input and load are independent of the GUI controls.

What you could do is to limit the output level or consider the digital input as full-scale voltage to adjust the output volume. So, you can determine what the maximum output voltage will be and, consequently, the output power.

Best regards,
Luis Fernando Rodríguez S.

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TAS2770EVM: Volume control in purepath console?