DS90UH948-Q1: Resister read/write address auto increment function

Shinji Tsuji

Genius 15204 points

Part Number: DS90UH948-Q1

Hi team,

I would like to know if DS90UH948's I2C interface has register address auto-increment function or not?

I currently specify each register address every time, but I would like to eliminate the I2C bus traffic and

just send initial register address and data, then send the data only for the following registers.

For example : 1E, 1F = address, 11, 01 = data

1E 11

1F 01

--> 1E 11 01

regards,

over 6 years ago

0 Casey McCrea over 6 years ago

TI__Guru** 103215 points

Hello Shinji,

Yes, 948 supports auto increment for multi-byte write. Here is an example I just captured writing registers 0x08 = 0x01, 0x09 = 0x02, and 0x0A = 0x03 in sequence:

Best Regards,

Casey

0 Shinji Tsuji over 6 years ago in reply to Casey McCrea

TI__Genius 15204 points

Hi Casey,

Thank you!

Let me confirm auto increment is also available for "multi-byte Read" command, too?

regards,

0 Casey McCrea over 6 years ago in reply to Shinji Tsuji

TI__Guru** 103215 points

Hello Shinji,

Yes, here's a multi-byte read-back of those same registers:

Best Regards,

Casey

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DS90UH948-Q1: Resister read/write address auto increment function