Analog Devices Inc. ADZS-BFSHUSB-EZEXT

Overview

ADZS-BFSHUSB-EZEXT from Analog Devices is a USB 2.0 extender board designed to interface the asynchronous memory bus of ADSP-BF518F, ADSP-BF526 Blackfin®, and ADSP-21469 SHARC® processors with a PLX NET2272 USB 2.0 controller. It requires no external power supply, derives 3.3 V and 2.5 V from the host EZ-Board, and supports CE-compliant lab evaluation of high-speed USB peripheral connectivity in embedded DSP systems.

For engineers reviewing the ADZS-BFSHUSB-EZEXT datasheet, ADZS-BFSHUSB-EZEXT pinout, ADZS-BFSHUSB-EZEXT application, or ADZS-BFSHUSB-EZEXT equivalent, key selection considerations include its plug-in expansion interface compatibility with specific EZ-Boards, jumper-configurable GPIO/AMS signal routing to the NET2272, and direct memory-mapped USB register access without FPGA or CPLD logic.

Technical Context

The ADZS-BFSHUSB-EZEXT implements a hardware bridge between Blackfin/SHARC processor memory buses and the NET2272 USB 2.0 device controller via dedicated AMS (address memory select) and GPIO signals. It uses no programmable logic-USB register reads/writes occur through direct memory-mapped addressing of the NET2272's internal registers at a configured memory bank.

Jumper-configurable signal routing enables adaptation to different EZ-Board variants: JP1 selects one of AMS0–AMS3 for NET2272 chip select, JP2 routes one of GPIO1–GPIO4 to the USB IRQ output, and JP3 assigns another GPIO to the USB soft reset input. All power regulation (3.3 V and 2.5 V) is performed onboard using the ADP130AUJZ-2.5 LDO.

Key Specifications

Availability

ADZS-BFSHUSB-EZEXT is available at Aetrix Electronics and suitable for embedded DSP prototyping, USB peripheral interface validation, and VisualDSP++-based firmware development requiring stable component supply and full documentation traceability.

Supply support for ADZS-BFSHUSB-EZEXT 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

Analog Devices, Inc. is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.

The ADZS-BFSHUSB-EZEXT belongs to Analog Devices' EZ-Extender® family-designed specifically to expand evaluation capabilities of Blackfin® and SHARC® processor EZ-Board platforms by adding standardized, plug-in interfaces without requiring custom PCB design.

FAQ

What is the primary function of the ADZS-BFSHUSB-EZEXT?

The ADZS-BFSHUSB-EZEXT is an evaluation extender board that connects the asynchronous memory bus of ADSP-BF518F, ADSP-BF526, and ADSP-21469 processors to a NET2272 USB 2.0 device controller. It enables memory-mapped USB peripheral development and testing within the VisualDSP++ environment without external logic or power supplies. The ADZS-BFSHUSB-EZEXT operates solely as a hardware bridge-not a standalone USB host or device-and requires pairing with a compatible EZ-Board.

Which processors and EZ-Boards are compatible with the ADZS-BFSHUSB-EZEXT?

The ADZS-BFSHUSB-EZEXT is explicitly designed for use with the ADSP-BF518F EZ-Board, ADSP-BF526 EZ-Board, and ADSP-21469 EZ-Board evaluation systems. It plugs directly into their high-speed expansion interface and relies on their signal definitions for AMS0–AMS3, GPIO1–GPIO4, and power rails. Compatibility is limited to these three models; it is not validated for other Blackfin or SHARC evaluation platforms.

Does the ADZS-BFSHUSB-EZEXT require an external power supply?

No-the ADZS-BFSHUSB-EZEXT draws all operating power from the host EZ-Board via the expansion connector. It uses onboard ADP130AUJZ-2.5 LDOs to generate regulated 2.5 V for the NET2272 core and shares the EZ-Board's 3.3 V I/O rail. No external DC input, battery, or USB power source is needed or supported.

How is USB communication controlled on the ADZS-BFSHUSB-EZEXT?

USB communication is controlled through memory-mapped register access to the NET2272 controller. The processor reads from and writes to the NET2272's internal registers by addressing a designated memory bank-no driver abstraction layer is required at the hardware level. Interrupt handling and reset are managed via jumper-configured GPIO signals (JP2 for IRQ, JP3 for soft reset), while chip select is assigned via JP1 to one of the AMS lines.

Is the ADZS-BFSHUSB-EZEXT certified for commercial or medical use?

No-the ADZS-BFSHUSB-EZEXT is explicitly designated for laboratory evaluation only. It carries the CE mark for EMC compliance but lacks shielding, safety isolation, or regulatory certification for consumer, industrial, or medical end-product integration. Analog Devices states it must not be used near medical equipment or RF-sensitive devices due to potential interference from its open-system design.