• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 30 subscribers
  • Views 267 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TAS2557: What is the best way to mute / unmute?

John Carter15
Prodigy 60 points
Part Number: TAS2557

We need to mute and unmute our audio very frequently (every couple of seconds and without any audio pops or noises.).

What is the best way to do this on the TAS2557?

Device Mute and Power Down Sequence

The datasheet SLASEC2B in section 9.5.2 and 9.5.3 has a "Device Power Up and Unmute Sequence" and "Device Mute and Power Down Sequence".

Is it OK to hack that to do the mute and unmute without power down and power up portion? (We're driving it via SPI)

Or will that result in problems?

  • 0
    TI__Guru* 84915 points

    Hi, John,

    Yes, it is fine if you only mute the device without powering down the device. Section 9.5.3 explains how to place the device in a sleep mode, so you may use the same code until the command "w 98 07 03". The rest of the code will be used to power down the device.

    This device has a soft stepped mute option for audio playback that mutes the device in 1/fs steps. This option reduces the risk of having pop issues.

    I hope this is clear. Please let me know if you have additional questions or comments. We will be glad to help you.

    Best regards,
    Luis Fernando Rodríguez S.