SM72442: Documentation mistake about i2c address.

Denys Fedoryshchenko

Prodigy 10 points

Part Number: SM72442

In documentation, page 13, it is stated, that if i set pin I2C0 to 5V address will be set to 0x4 (Hex).

It is not correct (confirmed by experiment), I2C0 as expected will set address to 0x1, I2C1 to 0x2, and so on.

over 4 years ago

0 Jasper Li over 4 years ago

TI__Mastermind 46905 points

Hi Denys,

i'm try to understand your meaning. the I2C address will be 0x1 if I2C0=1, I2C1=0, I2C2=0, but not 0x4 from your experiment. do I understand correctly?

0 Denys Fedoryshchenko over 4 years ago in reply to Jasper Li

Prodigy 10 points

Yes, correct.

0 Denys Fedoryshchenko over 4 years ago in reply to Denys Fedoryshchenko

Prodigy 10 points

Additionally, you can check Evaluation kit SM3220-BATT-EV, it have I2C0 only pulled to 5V, rest to gnd, and in example source code i2c_driver.c, i2c address of chip is 0x1 (in set_Voutmax). Its all in software supplied from TI, so it is clearly typo in documentation.

0 Jasper Li over 4 years ago in reply to Denys Fedoryshchenko

TI__Mastermind 46905 points

Hi Denys,

thanks a lot for the information and pointing it out. I will discuss internally to change the typo.

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SM72442: Documentation mistake about i2c address.