Regarding connection between ADIN1100 and 100Base-Tx

Hi UBOTI 

Thank you for reaching out to us.

You're right, you can't connect a 100BASE-TX directly to a 10BASE-T1L PHY like the ADIN1100 without some form of buffering in between.

You could use a switch (SES, for example) or an MCU, between the two. They will handle the bridging and buffering.  However, if the 100 Mbps side pushes too much data, the buffers can overflow leading to packet loss.

Alternatively, you could force the 100BASE-TX PHY to run at 10Mbps instead of 100Mbps so they can be connected back to back without a switch or MCU for buffering traffic. However, you may need an MCU for configuration if needed. For example, you could use the ADIN1200 and force it to operate at 10 Mbps using an MCU.

Kind Regards,

Shazia

Thank you for your answer.