TAS5538 Behavior of PWM Output for Soft Mute

Sadanori Kato

Other Parts Discussed in Thread: TAS5538

Hi,

Could you please tell us the behavior of the pwm output for the soft mute?
It seemed that TAS5538 improves the click and pops by adjusting the output phase of PWM_P_1 and PWM_M_1 when the 0x0F register of the soft mute is asserted 00h to FFh.
Does TAS5538 have such a function internally?

Best Regards,
Kato

over 9 years ago

0 Sadanori Kato over 9 years ago

Guru 36490 points

Hi,

Could you please look into this and get back to us?

Best Regards,
Kato

0 Tuan over 9 years ago

TI__Mastermind 33420 points

Hi Kato-san,

The softmute is basically ramp down the volume and the PWM stops switching. Hope this helps.

Best regards,

Tuan

0 Sadanori Kato over 9 years ago in reply to Tuan

Guru 36490 points

Hi Tuan-san,

Thank you for your reply.
I understood and will post a new question regarding the phenomenon that the output phase is adjusted based on the power-off sequence.

Best Regards,
Kato

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TAS5538 Behavior of PWM Output for Soft Mute