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Hi,
TAS5760M returns NACK at the very first if accessing a couple of TAS5760Ms in PBTL configuration via I2C bus, TAS5760M fails only when 0x6C is assigned as the device address.
Moreover, TAS5760M never fails in BTL configuration.
Have you had a similar experience ?
Please give me an email to my email address because I would like to share the detailed information to you.
Best regards,
Kato
Hi Andy-san,
Thank you for your response.
This issue can be resolved if changing I2C device address from 0x6C to 0x6D in PBTL configuration, therefore a couple of TAS5760Ms with PBTL configuration cannot be connected on the same I2C bus.
Have you had a similar experience ?
Best regards,
Kato
Hi Andy-san,
Thank you for your support.
TAS5760M returns ACK if setting the 0x6D to TAS5760M as the device address.
So, I don't know why it fails for the 0x6C address.
Could you please give me your advice again ?
Best regards,
Kato
Hi Andy-san,
I have already emailed you about these issues.
Sorry for rushing you, but I will need to inform the root cause and the workaround to our customer today.
Could you please give me your advice ?
Thank you and best regards,
Kato
Hi Andy-san,
Our customer is continuing to investigate this issue, so I will contact you if I get any updates from him.
Best regards,
Kato
Hi Andy-san,
I have already emailed you about new information.
So could you please give me your advice ?
Best reagards,
Kato
Hi Andy-san,
Thank you for your reply.
I am looking forward to getting that information from you ASAP.
Best reagards,
Kato
Hi Andy-san,
I found out the following post which you mentioned.
Would you recommend to insert "Start Byte" before sending the first writing command if accessing TAS5760M registers via I2C bus after the power-on ?
Please give me your advice as soon as possible.
https://e2e.ti.com/support/amplifiers/audio_amplifiers/f/6/p/318201/2126585
Best reagards,
Kato
Hi Andy-san,
Thank you for your reply.
Could you please tell me the root cause on this NACK issue ?
In addition, does it mean that there is no the workaround as needing to fix TAS5760M right ?
Best regards,
Kato
Hi Andy-san,
Sorry for rushing you, but I will need to inform the root cause and workaround to our customer ASAP.
Note : There was a typo in the above post and I fixed it.
Best regards,
Kato
Hi Andy-san,
Thank you for your quick response.
I understood the workaround but I am looking forward to getting the root cause from you ASAP.
Best regards,
Kato