BQ35100: Difference between Control(), AltManufacturerAccess() and ManufacturerAccess() and how to use them

Ryu Yamashita

Part Number: BQ35100
Other Parts Discussed in Thread: BQ28Z610-R1

Hi team,

Please tell me a few things.

1, The AltManufacturerAccess() register has two different command numbers, 0x00/0x01 and 0x3E/0x3F, and the former overlaps with the Control() register.
Which one should I use or how should I use them differently?
2, There are also two different notations, AltManufacturerAccess() and ManufacturerAccessControl()[0x3E/0x3F], as shown below.
If the command numbers are the same, including the Control() register, are the functions the same even if the names are different?

Sincerely,
Ryu.

10 months ago

0 Diego 10 months ago

TI__Mastermind 19720 points

Hi Ryu,

2) I am unsure what you are referring to when you say AltManufacturerAccess(), what documentation are you referring to?

Regards,

Evan

0 Ryu Yamashita 10 months ago in reply to Diego

Expert 2890 points

Hi Evan,

It is described in 7.3.8.2 of the data sheet.
It is noted that the same number is written in 7.3.8.2 and 7.3.8.3.

Sincerely,
Ryu.

0 Diego 10 months ago in reply to Ryu Yamashita

TI__Mastermind 19720 points

Hi Ryu,

Thanks for pointing that out.

Control, MAC, and AltManufacturerAccess are all very similar. MAC and Control function the same way while AltManufacturerAccess is used to read/write entire blocks of data rather than a single parameter.

Regards,

Evan

0 Ryu Yamashita 10 months ago in reply to Diego

Expert 2890 points

Hi Evan,

Does AltManufacturerAccess() exist in the q35100?
There is a description of AltManufacturerAccess() in section 7.3.8.2 of the bq35100 datasheet, but it is not present in the TRM.
I checked if there is a description of AltManufacturerAccess() in the TRM of bq28z610-R1.
As a result, there was a description.
Therefore, if there is no description in the TRM of bq35100, does it mean that AltManufacturerAccess() does not exist in bq35100?

Sincerely,
Ryu.