Infineon Technologies ADM8511X-CC-T-1

Overview

ADM8511X-CC-T-1 from Infineon Technologies is a single-chip USB 2.0 Full-Speed to Fast Ethernet (10/100BASE-TX) and HomePNA 2.0 controller IC integrating MAC, PHY, USB interface, 4KB on-chip SRAM, EEPROM interface, and LED control logic. It supports MII and 1M8 host interfaces, operates at 3.3 V core/io supply, and targets embedded USB-to-Ethernet adapter designs requiring integrated physical layer compliance.

For engineers reviewing the ADM8511X-CC-T-1 datasheet, ADM8511X-CC-T-1 pinout, ADM8511X-CC-T-1 application, or ADM8511X-CC-T-1 equivalent, key selection criteria include integrated 10/100M PHY compliance with Auto-Negotiation and Auto Polarity, USB 2.0 Full-Speed device mode operation, MII interface compatibility, and support for external EEPROM-based configuration storage.

Technical Context

The ADM8511X-CC-T-1 implements a complete USB-to-Ethernet bridge function using an integrated 10/100BASE-TX PHY compliant with IEEE 802.3u, including adaptive equalizer, baseline wander compensation, jabber/SQE detection, and Auto-Negotiation state machine. Its MAC layer supports full-duplex operation and MII signaling at 25 MHz.

USB functionality conforms to USB Specification Rev. 2.0 (Full-Speed, 12 Mbps), with integrated Serial Interface Engine (SIE), endpoint 0–3 support (control, bulk IN/OUT, interrupt IN), and serial EEPROM interface for device descriptor and MAC address storage. The chip uses a 48 MHz crystal for USB and Ethernet timing derivation.

Key Specifications

Pinout & Package

ADM8511X-CC-T-1 is housed in a P-LQFP-100-1 (Plastic Low Profile Quad Flat Package) with 100 leads, 0.5 mm pitch, and exposed thermal pad. Package dimensions are 14 mm × 14 mm × 1.4 mm (max).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB-to-Ethernet controller applications.

Compared with LAN9512 and USB2642, the ADM8511X-CC-T-1 uniquely combines USB device, 10/100 PHY, and HomePNA 2.0 in one die-enabling single-chip hybrid networking where dual-physical-layer operation is required without external arbitration logic.

Availability

ADM8511X-CC-T-1 is available at Aetrix Electronics and suitable for USB-to-Ethernet adapter manufacturing, HomePNA residential gateway production, and embedded industrial gateway development requiring stable component supply and long-term lifecycle assurance.

Supply support for ADM8511X-CC-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, security controllers, and communications solutions.

The ADM8511X belongs to Infineon's Communications Connectivity product line, designed specifically for cost-optimized, single-chip USB bridging solutions targeting consumer and SMB networking equipment with integrated PHY and minimal external components.

FAQ

Does ADM8511X-CC-T-1 support USB 2.0 High-Speed (480 Mbps)?

No. The ADM8511X-CC-T-1 implements USB Specification Rev. 2.0 Full-Speed mode only (12 Mbps). It does not include a High-Speed transceiver or associated chirp signaling circuitry. All USB communication-including descriptor reads, control transfers, and bulk data-is limited to 12 Mbps, consistent with its target use in cost-sensitive Ethernet adapters where bandwidth beyond 100 Mbps is unnecessary.

What external components are mandatory for basic Ethernet operation?

A 48 MHz fundamental-mode crystal (±50 ppm), two 22 pF load capacitors, a 100 Ω center-tapped Ethernet transformer (e.g., Pulse HX1188NL), and a 2.5 V analog supply decoupling network (1 µF + 0.1 µF) are mandatory. External EEPROM is optional but required for persistent MAC address and USB descriptor storage in production units.

Can ADM8511X-CC-T-1 operate in USB host mode?

No. The device functions exclusively as a USB device (peripheral), not a host. Its USB interface contains only a device-side Serial Interface Engine (SIE) and lacks OTG capability, host controller logic, or VBUS sensing circuitry. It must be connected to a USB host (PC, embedded Linux host, etc.) to function.

Is the MII interface electrically compatible with standard IEEE 802.3 MII timing?

Yes. The ADM8511X-CC-T-1 MII interface complies fully with IEEE 802.3 Clause 22, including 25 MHz TXCLK/RXCLK timing, setup/hold requirements for TXD/RXD, and MDIO/MDC bidirectional timing. It supports both PHY-initiated and STA-initiated MDIO transactions as shown in Figures 6 and 7 of the datasheet.