HDMI_HPD signal for i.MX 8M Plus

[borisberman]

Hello to all,

What is the max. voltage on HDMI_HPD signal for i.MX 8M Plus?

The power group for it (NVCC_ECSP1_HDMI) is connected to 3.3V, we only use this pin as a hot plug detect input.

In other words, does this input the +5V tolerant in the i.MX 8M Plus?

Thank You,
Boris

[joanxie]

refer to the imx8mp hardware design guide:

"3.9 HDMI connectivity
The i.MX 8M Plus provides an HDMI transmitter capable of supporting an HDMI2.0 compatible output. Level shifters are required on HDMI_DDC_SCL, HDMI_DDC_SDA, HDMI_HPD, HDMI_CEC signals to shift the original 3.3V or 1.8V level to 5V required by HDMI interface."

[borisberman]

Hello Joan,

Thanks a lot for your reply.

Boris