SNLS579A April 2018 – November 2018 DP83TC811S-Q1
The device (100BASE-T1 Master mode only) automatically enters into standby post power-up and reset so long that EN is held HIGH and the device is bootstrapped for managed operation.
In standby, all PHY functions are operational except for PCS and PMA blocks. Link establishment is not possible in standby and data cannot be transmitted or received. SMI functions are operational and register configurations are maintained.
If the device is configured for autonomous operation through bootstrap setting, the PHY automatically switches to normal operation once POR is complete.