What is the Voh for I2C-Specific Related I/Os: SCL, SDA, SCLSR_EN1, SDASR_EN2 for pMIC TPS65910AA1

Manoj Agarwal

What is the Voh for I2C-Specific Related I/Os: SCL, SDA, SCLSR_EN1, SDASR_EN2 for pMIC TPS65910AA1, it is not given in section 5.6.

over 9 years ago

0 Richard Solarski over 9 years ago

TI__Genius 10885 points

Hi Manoj,

As outputs, these pins require external pull-ups. Therefor Voh could be considered the result of releasing the comm line to the pull-up voltage. Voh will be the nominal voltage on your i2c bus, influenced by the particular pull-ups selected and the other devices on the bus.

0 Manoj Agarwal over 9 years ago in reply to Richard Solarski

Expert 1030 points

We are connecting VDDIO(3.3V) pull up then it that case what would be the VOH

0 Richard Solarski over 9 years ago in reply to Manoj Agarwal

TI__Genius 10885 points

Hi Manoj,

If I'm understanding the question correctly, I would imagine Voh could be considered ~3.3V for an i2c port, or actually a little lower depending on the pull-up resistors and any other loads on your i2c bus.

If this doesn't quite answer your question, could you let me know what your primary concern is for defining Voh for these pins?

0 Manoj Agarwal over 9 years ago in reply to Richard Solarski

Expert 1030 points

Hi Richard,

Thanks for reply. I understood now. I will consider VDDIO(3.3V pull up) min and max value for VOH parameter. thanks for clarification.

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What is the Voh for I2C-Specific Related I/Os: SCL, SDA, SCLSR_EN1, SDASR_EN2 for pMIC TPS65910AA1