BQ76952: FW_VERSION and READ_CAL1 length error

Andras Magyar

Intellectual 400 points

Part Number: BQ76952

Dear Experts,

We have found out that the length of the FW_VERSION and READ_CAL1 subcommands are not what is stated in the TRM.

According to the TRM (Table 12-23 for both) FW_VERSION has 12 bytes and READ_CAL1 has 6 bytes but in reality when

we read the buffer length through I2C on 0x61 address we get 11 bytes for FW_VERSION and and 14 bytes for READ_CAL1.

This was quite annoying bug for use since we always check the lenght when we issue a subcommand.

For the rest they were fine. Have you experiences something like this?

Regards,

Andras

over 2 years ago

+1 Matt Sunna over 2 years ago

TI__Guru* 81035 points

Hi Andras,

The READ_CAL1 number of bytes - you are correct, this was reported to us by another customer and this needs to be updated in the TRM the next time we do a revision. For the FW_VERSION, I was not aware of this. I will take note of this to investigate and we will update the TRM to reflect the correct length.

Best regards,

Matt

0 Andras Magyar over 2 years ago in reply to Matt Sunna

Intellectual 400 points

Hi Matt,

You meant to write READ_CAL1 for the first or second time in your reply, right?

Anyway, yes thanks for the info!

Regards,

Andras

0 Matt Sunna over 2 years ago in reply to Andras Magyar

TI__Guru* 81035 points

Yes, sorry. I will edit the first response to fix this.

Power management

Power management forum

BQ76952: FW_VERSION and READ_CAL1 length error