BQ27750EVM-837: the initial setting of I2C communication speed of BQ27750EVM-837

user4522287

Part Number: BQ27750EVM-837
Other Parts Discussed in Thread: BQSTUDIO

Hello,

Please tell me the initial setting of I2C communication speed of BQ27750EVM-837.
Will it work if it is 400kHz or less?

thanks

0 Andy Liu (BMS) over 5 years ago

Check the XL bit of Operation Status in the bqStudio. The 400kHz i2c clock is supported if that bit is set to 1.

You can find the definition of the XL bit on Page 65 of BQ27750 TRM.

Andy

0 user4522287 over 5 years ago in reply to Andy Liu (BMS)

Hello,

Thank you for your reply.

I do not have the tools to configure.
Please tell me the initial setting of XL bit.
(400kHz or 100kHz?)

thanks

0 Andy Liu (BMS) over 5 years ago in reply to user4522287

As I see in the TRM, the XL bit is set to 0 by default. I would suggest you talk to the gauge device with a 100kHz i2c clock?

0 Andy Liu (BMS) over 5 years ago in reply to user4522287

As I see in the TRM, the XL bit is set to 0 by default. I would suggest you talk to the gauge device with a 100kHz i2c clock

0 user4522287 over 5 years ago in reply to Andy Liu (BMS)

Hello,

Thank you for your reply.

I understand your answer.

Thanks

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