Description
The ST802RT1x is a high-performance fast Ethernet physical layer interface for 10Base-T, 100Base-TX and 100Base-FX applications. It is designed using advanced CMOS technology to provide MII and RMII interfaces for easy attachment to 10/100 media access controllers (MAC). The ST802RT1x supports the 100BaseTX of IEEE802.3u and 10Base-T of IEEE802.3i and 100Base FX of IEEE 802.3u (B version only). The ST802RT1x supports both half-duplex and full-duplex operation at 10 and 100 Mbps operation. Its operating mode can be set using auto-negotiation, parallel detection or manual control. It allows for the support of auto negotiation functions for speed and duplex detection. The automatic MDI / MDIX feature compensates for the use of a crossover cable. With auto MDIX, the ST802RT1x automatically detects what is on the other end of the network cable and switches the TX & RX pin functionality accordingly.

Features
■ IEEE802.3 10Base-T and IEEE802.3u 100Base-TX, 100Base-FX (ST802RT1B only) transceiver
■ Support for IEEE802.3x flow control
■ Provides full-duplex operation in both 100 Mbps and 10 Mbps modes
■ Register bit strap during HW reset
■ Auto MDI-X for 10/100 Mb/s
■ Auto-negotiation
■ Provides loop-back mode for diagnostics
■ Programmable LED display for operating mode and functionality signaling
■ MII / RMII interface
■ MDC / MDIO serial management interface
■ Optimized deterministic latency for real-time Ethernet operation
■ Supports external transformer with turn ratio 1.414:1 on Tx/Rx side
■ Self-termination transceiver for external components and power saving
■ Operation from single 3.3 V supply
■ High ESD tolerance
■ 48-pin LQFP 7 x 7 package
■ Extended temp. range: -40 °C to +105 °C
■ Power dissipation < 315 mW (typ)

Applications
■ Industrial control
■ Factory automation
■ High-end peripherals
■ Building automation
■ Telecom infrastructure