Infineon Technologies ADM5120PX-AB-R-2

Overview

ADM5120PX-AB-R-2 from Infineon Technologies is a single-chip network processor integrating a MIPS4Kc CPU core, 4-port Ethernet switch engine, MII/PHY interface, SDRAM controller, and integrated USB 1.1 host/device controller - designed for residential gateways, VoIP routers, and broadband CPE. It supports 10/100 Mbps Ethernet switching with VLAN, CoS, and flow control, operates at 200 MHz CPU frequency, and features 32 KB instruction + 32 KB data cache.

For engineers reviewing the ADM5120PX-AB-R-2 datasheet, ADM5120PX-AB-R-2 pinout, ADM5120PX-AB-R-2 application, or ADM5120PX-AB-R-2 equivalent, this page delivers verified technical context on its integrated switch architecture, memory subsystem timing, MII management register mapping, and real-world deployment constraints in embedded networking hardware.

Technical Context

The ADM5120PX-AB-R-2 implements a full-featured Layer 2 Ethernet switch with hardware-accelerated forwarding, 1024-entry MAC address table, and per-port bandwidth control. Its MPMC subsystem supports 16-bit SDRAM (up to 128 MB) and multiple static memory devices with programmable wait states and burst read/write capability.

It integrates an ARM-compliant EJTAG debug interface, UART for console access, 32 GPIOs, and a regulator interface supporting external DC-DC control. The device uses a fixed 200 MHz CPU clock derived from an internal PLL fed by a 25 MHz crystal input, with separate 25 MHz clock domains for MII and USB.

Key Specifications

Pinout & Package

P-FQFP-208-10 package with exposed thermal pad; 208 pins arranged in quad configuration, compatible with standard reflow profiles for lead-free assembly. Pin functions validated per Infineon DS Rev. 1.32, Section 2.1.2 (Pin Diagram) and Table 2-1 (Pin Description).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar network processor applications.

Compared with ADM5120PX-AB-R-2, the ADM5120P-AB-R-2 offers identical functionality at lower thermal rating, while the CX82310-14 trades integration for raw compute headroom - making the ADM5120PX optimal for compact, thermally constrained, fully integrated CPE designs.

Availability

ADM5120PX-AB-R-2 is available at Aetrix Electronics and suitable for residential gateways, VoIP routers, and broadband CPE requiring stable component supply across multi-year production cycles.

Supply support for ADM5120PX-AB-R-2 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 MCUs, and communications ICs, with global R&D centers and wafer fabs.

The ADM5120 series belongs to Infineon's legacy network processor product line, engineered specifically for integrated broadband access equipment targeting cost-sensitive, high-volume residential and SMB networking applications.

FAQ

What is the maximum SDRAM capacity supported by the ADM5120PX-AB-R-2?

The ADM5120PX-AB-R-2 supports up to 128 MB of 16-bit SDRAM using its integrated dynamic memory controller. This is achieved with two banks of 32M×16-bit devices, configured via MPMC registers. Address space allocation and refresh timing are fully programmable in firmware, and the datasheet confirms compatibility with standard JEDEC-compliant SDRAM parts operating at 133 MHz.

Does the ADM5120PX-AB-R-2 include a built-in Ethernet PHY?

No, the ADM5120PX-AB-R-2 does not integrate Ethernet PHYs. It provides four MII (Media Independent Interface) ports for connection to external 10/100 PHY devices such as the Infineon TDA8035 or SMSC LAN83C185. Each MII interface includes TX/RX data, clock, and control signals, requiring external magnetics and PHY-level signal conditioning.

Can the ADM5120PX-AB-R-2 operate without external flash memory?

No - the ADM5120PX-AB-R-2 lacks on-chip boot ROM and requires external non-volatile memory (typically parallel NOR flash) mapped to its static memory controller for initial program loading. Boot mode is selected via strap pins, and the device executes firmware directly from flash or copies it to SDRAM during startup, as defined in Section 3.1 of the datasheet.

Is JTAG debugging supported on the ADM5120PX-AB-R-2?

Yes, the ADM5120PX-AB-R-2 includes a compliant EJTAG (Enhanced JTAG) interface accessible via five dedicated pins (TCK, TMS, TDI, TDO, TRST#). It supports full boundary-scan testing, real-time register access, and software breakpoints using standard tools like Lauterbach TRACE32 or GNU GDB with OpenOCD, as documented in Section 2.1.11 and Chapter 4.2.7 of the datasheet.