I want to know how to implement COLLISION DETECTION & LED_0 pin simultaneously using hardware implementation.(at Pin 16) of ADIN 1200 PHY.
To clarify, you would use MII as your MAC Interface here because the collision pin is active default when MII is the MAC.
You cannot use LED_0 when using this COL function because the two pins are shared.
This LED pin is configurable via software using the LED Control Registers.
Simultaneouly, your LINK_ST can be used as an indication of link.