STMicroelectronics STEVAL-TDE001V1

Overview

STEVAL-TDE001V1 from STMicroelectronics is an evaluation board for the STE101P 10/100 Fast Ethernet PHY transceiver IC, designed to demonstrate MII/RMII/SMII interface operation with MAC controllers and RJ-45 physical layer connectivity. It supports IEEE 802.3u 100Base-TX and IEEE 802.3 10Base-T, auto-MDIX, full-duplex at 10/100 Mbps, and operates from a single 3.3 V supply in industrial temperature range (−40 °C to +85 °C).

For engineers reviewing the STEVAL-TDE001V1 datasheet, STEVAL-TDE001V1 pinout, STEVAL-TDE001V1 application, or STEVAL-TDE001V1 equivalent, this board enables rapid validation of Ethernet PHY integration, transformer interface design (1.414:1 turn ratio), LED status signaling, and low-power (<200 mW) transceiver operation in switch/router, VoIP gateway, and network printer reference designs.

Technical Context

The STEVAL-TDE001V1 implements the STE101P transceiver in a complete functional system: it integrates a 25 MHz crystal oscillator, serial EEPROM for configuration, discrete LEDs for link/activity/speed/duplex/status indication, and a standard RJ-45 connector with integrated magnetics compliant with 1.414:1 Tx/Rx transformer ratio requirements.

It supports all three host interfaces-MII (16-bit), RMII (7-pin), and SMII (4-pin)-and enables diagnostic loop-back modes, baseline wander compensation via MLT-3 encoding with DC restoration, and IEEE 802.3x flow control negotiation between PHY and MAC layers.

Key Specifications

Availability

STEVAL-TDE001V1 is available at Aetrix Electronics and suitable for Ethernet switch development, VoIP gateway prototyping, and network printer hardware validation requiring stable component supply, reference design fidelity, and production-ready PHY interface verification.

Supply support for STEVAL-TDE001V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power management devices, and connectivity solutions for industrial, automotive, and consumer applications.

The STEVAL-TDE001V1 belongs to ST's Ethernet evaluation platform family, developed specifically to accelerate time-to-test for Fast Ethernet PHY integration, reduce MAC-PHY interface risk, and validate transformer-coupled 10/100Base-TX signal integrity in real-world PCB layouts.

FAQ

What interfaces does the STEVAL-TDE001V1 support between the STE101P and host MAC?

The board supports all three standardized host interfaces defined for the STE101P: Media Independent Interface (MII) with 16 data/control signals, Reduced MII (RMII) using 7 pins, and Serial MII (SMII) with only 4 pins. Each interface is implemented with dedicated jumpers and routing to allow direct connection to compatible MAC controllers without redesign.

Does the STEVAL-TDE001V1 include magnetics and RJ-45 connectivity?

Yes - the board integrates a standard RJ-45 connector with built-in magnetics compliant with the 1.414:1 turn ratio specified in the STE101P datasheet. This eliminates external transformer selection and ensures correct common-mode rejection, DC isolation, and ESD robustness required for 10/100Base-TX compliance.

Can the STEVAL-TDE001V1 operate in auto-negotiation and loop-back modes?

Yes - the board enables full auto-negotiation (speed/duplex detection) and multiple loop-back modes (digital, analog, and near-end) via STE101P register configuration through the onboard EEPROM or external host. These are accessible via JTAG or MII management interface for PHY diagnostics and signal integrity testing.

Is the STEVAL-TDE001V1 RoHS-compliant and ECOPACK® certified?

Yes - the STE101P IC used on the board is supplied in an ECOPACK®-compliant TQFP64 package with lead-free second-level interconnect, meeting JEDEC JESD97 marking requirements. The full evaluation board conforms to RoHS Directive 2011/65/EU and is manufactured with halogen-free laminates and finishes.