The PHY core supports the 1.0V pk-pk operating mode and the 2.4V pk-pk operating mode defined in the standard. It can operate from a single power supply rail of 1.8V or 3.3V, with the lower voltage option supporting the 1.0V pk-pk transmit voltage level. The 1.0V pk-pk operating mode, external termination resistors, and independent Rx/Tx pins make the ADIN1100 ideal for intrinsic safety applications. The ADIN1100 has an integrated voltage supply monitoring circuit and power-on reset circuitry to improve system-level robustness.

The MDIO interface is a two-wire serial interface for communication between a host processor or MAC and the ADIN1100, thereby allowing access to control and status information in the PHY core management registers. The interface is compatible with both the IEEE 802.3 Standard Clause 22 and Clause 45 management frame structures. The ADIN1100 is available in a 6 mm × 6 mm 40-ld package.