The 80225 is a highly integrated analog interface IC for twisted pair Ethernet applications. It supports 100Base-TX and 10Base-T Ethernet operation, and features automatic configuration and various user options.
The 80225 Ethernet Physical Layer Device (PHY) provides a single‑chip solution for 10/100 Mbps Ethernet applications. It supports dual‑speed operation, half‑ and full‑duplex modes, auto‑negotiation, and includes on‑chip wave shaping, equalizer, and baseline wander correction, eliminating the need for external filters.
The device is supplied in a 44‑pin plastic leaded chip carrier (PLCC) and operates from a 3.3 V supply with 5 V‑tolerant I/O. Pin functions include LED status indicators, management interface (MI), and optional repeater control. Detailed pin descriptions, functional blocks, and mechanical dimensions are provided in the document.
| Supply Voltage | 3.3 V (+5 % tolerance) |
|---|---|
| Interface Speed | 10/100 Mbps, half/full duplex |
| Package | 44‑pin PLCC |
| LED Outputs | Link, Activity, Collision, Full Duplex, 10/100 |
| Auto‑Negotiation Control | Enabled via ANEG pin |
The device is provided in a 44‑pin plastic leaded chip carrier (PLCC) package.
Auto‑negotiation is enabled by setting the ANEG pin high.