About startup movement of TAS5766M

Satoshi

Guru 19655 points

Other Parts Discussed in Thread: TAS5766M

When having started with not writing data(Resister/IRAM/CRAM) of TAS5766M at all,

by what kind of setting is TAS5766M start up?

※ex) Default setting operation, or no sound output, or the other...

Best regards,

Satoshi

over 10 years ago

0 J- over 10 years ago

TI__Mastermind 46195 points

Hi Satoshi-san,

It boots into a default mode where audio plays if a proper I2S is provided. Otherwise, it will go into powerdown mode. If controlling I2S is not possible, it might be a good idea to control the XSMT pin externally (e.g. GPIO of MCU connected to pull-down resistor) to prevent any undesired audio from a floating DIN pin.

Refer to these wiki pages:
e2e.ti.com/.../2846.tas5766m-effect-of-xsmt-i2s-rqst-and-rqpd-on-power-consumption
e2e.ti.com/.../2845.tas5766m-effects-of-power-cycling-on-memory

Thanks,
J-

0 Satoshi over 10 years ago in reply to J-

Guru 19655 points

Dear J Arbona-san

Thank you for reply.

When default startup, is TAS5766M have a case and risk by which a speaker was destroyed?
(Risk：destroy, big sound, etc)

Best regards,
Satoshi

0 J- over 10 years ago in reply to Satoshi

TI__Mastermind 46195 points

Satoshi-san,

It depends on the power supply. Like any amplifier, if excursion and temperature are driven beyond the speaker limits, there is risk of speaker failure. For that reason, audio should not be sent via I2S (or XSMT low) until device is programmed in the intended mode.

Regards,
Jorge

Audio

Audio forum

About startup movement of TAS5766M