TPS65987D: What will happen when the reset signal takes effect

Xavier

Prodigy 140 points

Part Number: TPS65987D

Hi all,

What will happen if tps65987d receives a valid reset signal?

Will the 987D reload the FW from the spi flash?

Best regards,

Xavier.

over 1 year ago

0 Aya Khedr over 1 year ago

TI__Mastermind 29882 points

Hi Xavier,

Thank you for reaching out!

Could you specify which reset signal? Are you referring to a hard reset issued by the PD controller or a 4CC command to reset the device?

The TPS65987D will reboot its OTP bootloader when a "GAID" command is sent.

Best Regards,

Aya Khedr

0 Xavier over 1 year ago in reply to Aya Khedr

Prodigy 140 points

Hi Aya,

Thank you for your reply.

I would give a high pulse to 'pin44 hreset' of the tps65987d,this for reset.

Can this operation make tps65987d send a "GAID" command and reload the FW from spi flash once again.

Best Regards,

Xavier.

0 Field Tolson over 1 year ago in reply to Xavier

TI__Genius 10772 points

Hi Xavier,

Due to the holiday, many device experts are currently out of the office. When they return they will look into this and provide a response. Please expect some delay accordingly.

Thanks,
Field

0 Aya Khedr over 1 year ago in reply to Field Tolson

TI__Mastermind 29882 points

Hi Xavier,

The HRESET pin reinitializes the device settings similar to a warm reset (Gaid) so it would not reload the FW from SPI flash.

Please see the following thread for more information on the resets: https://e2e.ti.com/support/power-management-group/power-management---internal/f/power-management---internal-forum/1167055/tps65987d-hard-warm-cold-reset-definitions

Best Regards,

Aya Khedr

Power management

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TPS65987D: What will happen when the reset signal takes effect