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

Applications

■ Industrial control

■ Factory automation

■ High-end peripherals

■ Building automation

■ Telecom infrastructure