2024-09-03 06:48 PM
Hi All,
I have a 50MHz clock with 1Vpp and the MAC is not working. The only information I have from the RM and datasheet is this is a digital input pin and never mentioned about the voltage level. Please help what is the clock pulse VPP for RMII reference clock pin ?
Thank you in advance.
2024-09-03 08:03 PM - edited 2024-09-03 08:04 PM
This is a digital input, so it will need to respect the digital input levels. Generally, a low of 0.3 VDD or less and a high of 0.7 VDD or more. It's unlikely a 1 Vpp signal will satisfy both of these.