TAS5825M: TAS5825M has OTE event immediately after startup

Wer Kha

Part Number: TAS5825M

Hello, I'm currently working on an amplifier board using the TAS5825M with PBTL mode and have found that immediately after the TAS5825M starts up, it throws an over-temperature exception. Below are the operating steps and observations:

Pull up PDN pin
Wait 5ms
Input I2S signal
Wait 5ms
Write value 0x00 to register 0x00
Write value 0x00 to register 0x7f
Write value 0x03 to register 0x02

After these,
read the register 0x72, found the value is 0x01
read the register 0x73, found the value is 0x0F

Is these normal?

28 days ago

+1 Sydney Northcutt 27 days ago

TI__Mastermind 19830 points

Hello,

Are you using PPC3 or a script from PPC3 to initialize the device? Also are you using the EVM or a custom board?

Regards,
Sydney Northcutt

0 Wer Kha 27 days ago in reply to Sydney Northcutt

Prodigy 11 points

Thanks for your reply

Yes, I uesd a custom board

In fact, I just write three register mentioned in the question, then the OTE found from registers occurs

0 Sydney Northcutt 24 days ago in reply to Wer Kha

TI__Mastermind 19830 points

Hello,

I highly recommend using our PPC3 GUI to generate a script for the audio amp as it must first be initialized. These type of issues can come from custom scripts generated by hand.

You can use the below links to request PPC3 for TAS5825M.

https://www.ti.com/secureresources/TAS5825-SW

https://www.ti.com/secureresources/PUREPATHCONSOLE

Regards,
Sydney Northcutt

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TAS5825M: TAS5825M has OTE event immediately after startup