USB EZ-PD™ Type-C Forum Discussions

[td83]

Hi,

I am using a power delivery CYPD5225 with a Tigerlake SoC.

Look with a scope at some signals of the CYPD5225 i have seen that the CYPD5225 activates (low level on the signal) the interrupt line I2C_INT_EC.

What does it means ?

Why the power delivery CYPD5225 activates this I2C_INT_EC ?

The activation of the signal is done immediately after the board is powered on, and this signal stay at a zero level all the time. See file scope_6.jpg enclosed (channel 1 (yellow) signal I2C_SCL_SCB1_EC; channel 2 (green) signal I2C_SDA_SCB1_EC; channel 4 (red) signal I2C_INT_EC).

Our design is "EC LESS" how can i specified it in the configuration on the power delivery.

Thank you for help,

Best Regards,

TD83

[Abhilash_P · Accepted solution]

Hi,

   The I2C_INT_EC  is an output pin used to interrupt the Embedded Controller when there is a state change. 

This block is also used by the bootloader. Please refer the EZ-PD Host SDK for more details.

Regards,

Abhilash P