TAS5825M: /PDN Feature

Sadanori Kato

Part Number: TAS5825M

Hi,

Could you please tell me the difference in behavior between when /PDN pin is asserted to "low" and when RST_DIG_CORE is asserted to "high" via I2C ?

Best regards,
Kato

over 6 years ago

0 Alix Wan over 6 years ago

TI__Genius 9995 points

Hi Kato-san,

When PDN is pulled down to low, TAS5825 will be shut down, which includes all signal path as well as internal power supply. I2C communication does not work now. But RST_DIG_CORE will reset the signal path (all configuration including DSP coefficient will be lost). In this state, TAS5825 will be in deep sleep mode. As the internal 1.5V (VR_DIG) still works, I2C works too.

Regards,

Alix Wan

0 Sadanori Kato over 6 years ago in reply to Alix Wan

Guru 36540 points

Hi Alix-san,

Thank you for the explanation.

I have one more question, so is the signal path reset when /PDN pin is asserted to "low" such as RST_DIG_CORE ?

Best regards,
Kato

0 Alix Wan over 6 years ago in reply to Sadanori Kato

TI__Genius 9995 points

Hi Kato-san,

Yes, you are right! Both the two methods need to reconfigure the DSP/device from the beginning.

Regards,
Alix Wan

0 Sadanori Kato over 6 years ago in reply to Alix Wan

Guru 36540 points

Hi Alix-san,

Thank you always for your strong support.

I understood.

Best regards,
Kato

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TAS5825M: /PDN Feature