I2C Vol value of Jeston AGX Xavier

Robotics & Edge Computing Jetson Systems Jetson AGX Xavier
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1

From datasheet of JetsonAGXXavierSeriesDatasheet_DS09654001v1.1，in open drain pin, I2C output low voltage(Iol=3.3mA) is 0.3xVDD,but output low voltage(Iol=1mA) is 0.15xVDD.We use I2C2_CLK/Data as I2C communicate with a device,which is pulled up 2K to 1.8V,and which paramater we should choose as consideration of Vol(0.3xVDD or 0.15xVDD) ?

3

From datasheet of JetsonAGXXavierSeriesDatasheet_DS09654001v1.1，in open drain pin, I2C output low voltage(Iol=3.3mA) is 0.3xVDD,but others output low voltage(Iol=1mA) is 0.15xVDD.We use I2C2_CLK/Data as I2C communicate with a device,which is pulled up 2K to 1.8V,and which paramater we should choose as consideration of Vol(0.3xVDD or 0.15xVDD) ?image
Look foward to your reply！

4

Hi

For i2c bus, the max of Vol is 0.3*VDD at 3.3mA sink current.

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Thank you for your reply.
When the sink current of i2c bus is 1.8mA(pull up 1K to power 1.8V),we should choose which max value of Vol ?

8

0.3 x VDD is better for that.

9

Got it！Thanks.