Infineon Technologies ADM7001X-AC-T-1

Overview

ADM7001X-AC-T-1 from Infineon Technologies is a single-port 10/100BASE-TX Ethernet physical layer transceiver (PHY) supporting MII, RMII, and GPSI MAC interfaces. It integrates a clock synthesizer, auto-negotiation engine, smart squelch, jabber protection, and LED status indicators. Operates at 2.5 V core voltage with integrated 3.3 V regulator control, targeting embedded Ethernet edge nodes and industrial controllers.

For engineers reviewing the ADM7001X-AC-T-1 datasheet, ADM7001X-AC-T-1 pinout, ADM7001X-AC-T-1 application, or ADM7001X-AC-T-1 equivalent, key selection considerations include RMII timing compliance, 2.5 V core supply requirement, integrated regulator enable logic, and support for automatic link polarity detection and carrier sense functionality.

Technical Context

The ADM7001X-AC-T-1 implements a full-duplex 10/100 Mbit/s PHY with independent 100BASE-TX and 10BASE-T modules. It supports three MAC interface modes: standard 16-pin MII, 7-pin RMII (50 MHz REFCLK), and 4-pin GPSI - each with dedicated receive/transmit data paths and timing specifications defined in Sections 5.3–5.5 of the datasheet.

Its internal architecture includes a Manchester encoder/decoder, collision detection circuitry, jabber function (max 1518-byte frame limit), and smart squelch for noise-immune link detection. The device uses a 25 MHz crystal input (XI/OSCI) and generates internal clocks including CLKO50 for RMII, with all timing parameters validated per IEEE 802.3u.

Key Specifications

Pinout & Package

ADM7001X-AC-T-1 is housed in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are defined in Figure 2 and Section 2.2 of the Rev. 1.07 datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10/100BASE-TX PHY applications.

Compared with DP83848CVV and LAN8720A, the ADM7001X-AC-T-1 uniquely combines 2.5 V core efficiency, triple-interface flexibility (including GPSI), and robust link-layer features like smart squelch and automatic polarity correction-making it optimal for industrial gateways requiring field interoperability and noise resilience.

Availability

ADM7001X-AC-T-1 is available at Aetrix Electronics and suitable for industrial Ethernet gateways, embedded network appliances, and building automation controllers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.

Supply support for ADM7001X-AC-T-1 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and communications solutions, with global R&D and manufacturing infrastructure.

The ADM7001/X series was developed as part of Infineon's Communications PHY product line to deliver cost-optimized, feature-rich Ethernet physical layer devices for industrial and embedded networking applications.

FAQ

Does ADM7001X-AC-T-1 support Power over Ethernet (PoE)?

No, ADM7001X-AC-T-1 does not integrate PoE functionality. It is a PHY-only device without power sourcing equipment (PSE) or powered device (PD) circuitry. PoE must be implemented externally using dedicated IEEE 802.3af/at controllers and magnetics with center-tap injection. The PHY operates independently of PoE power delivery and remains functional when PoE is added upstream.

Can ADM7001X-AC-T-1 operate in 10BASE-T only mode without auto-negotiation?

Yes, the device supports forced 10BASE-T half-duplex operation via management register configuration (Register 0, Bit 12 = 0, Bit 13 = 0). In this mode, auto-negotiation is disabled, and the PHY asserts link status based solely on carrier detect and signal quality-enabling compatibility with legacy hubs or fixed-speed infrastructure.

What is the purpose of the GPSI interface, and how does it differ from MII/RMII?

GPSI (General Purpose Serial Interface) is a 4-pin synchronous serial interface optimized for low-pin-count microcontrollers lacking native MII/RMII peripherals. It transmits/receives data bit-serially with separate clock and frame sync signals, reducing I/O count by >75% versus MII. Unlike RMII, GPSI does not require a 50 MHz clock and supports variable data rates up to 25 Mbps.

Is the exposed thermal pad on the LQFP package required to be soldered to ground?

Yes, the exposed thermal pad (EPAD) must be soldered to a solid GND plane using ≥4 thermal vias (0.3 mm diameter) to ensure proper heat dissipation and electrical stability. Per Section 6.1 of the datasheet, failure to connect the EPAD results in elevated junction temperature (>115 °C under full load), risking parametric drift and reduced long-term reliability in industrial ambient conditions.