The Analog Devices USBi “USB Interface” (EVAL-ADUSB2EBZ) board is the interface between your PC's USB port and SigmaDSP hardware's data input pins. This interface can be used with any evaluation board which includes an External SPI/I²C header (Aardvark Header). The EVAL-ADUSB2EBZ board is capable of both SPI and I²C communication (which is user selectable) and can supply IOVDD of either 3.3V or 1.8V.The USBi interface is powered from the computer's USB port.

Using USBi in SigmaStudio:

To communication between SigmaStudio and the USBi board, a communication channel block must be added to the Schematic design. To locate the block, select the Hardware Configuration Tab, in the ToolBox or Tree ToolBox window choose the “Communication Channels” category, and select the USBi block.

This block provides connections for multiple processors (ICs / DSPs), allowing you to use multiple processors in a single design. This block allows you to explicitly specify both the communication protocol (SPI or I²C) and the part's address, I²C address or SPI catch line. The DSP hardware's address must match the block's selected address for communication to function properly. See the parts data sheet for more information about addressing (e.g. ADR_SEL, ADDR0, or ADDR1 pins). The default USBi protocol is I²C, to enable SPI, you must first select an SPI address in the block's drop down menu and then perform three write operations (e.g. press the write button the Register Read/Write Window 3 times). The USBi hardware has LEDs which indicate the current mode, I²C or SPI.

Analog Devices has developed a low cost, low power DSP evaluation platform targeting an array of real-time applications. The ADSP-BF706 EZ-KIT Mini^® leverages the latest entry within the industry-leading, low power Blackfin^® processor family as well as ADI’s optimized development tools and third party software deliverables. With on-board, high quality audio connectivity, multiple expansion options, and an integrated debug agent, the EZ-KIT Mini offers designers a complete small form factor, low cost starter platform for multiple applications.

The ADSP-BF706 Blackfin processor is a high performance DSP that delivers a class-leading 800 MMACS of processing power at less than 100 mW. With glueless connectivity options including USB and over 1 MB of internal SRAM, this reduces BOM cost and eliminates the need for external memory in many applications. Using the enhanced Blackfin+ core, the combination of performance, power efficiency, memory integration, sophisticated security, and great value, allows designers to incorporate advanced 16- and 32-bit processing into a wide range of new power sensitive use cases.

Target ADSP-BF70x applications include:

• Portable audio, DJ equipment, and effects
• Automotive audio and sensors
• Portable communications
• Military and aerospace
• Portable healthcare
• Intelligent lighting and occupancy detection*
• Industrial imaging and biometrics*

The SHARC^® Audio Module is an expandable hardware/software platform that enables project prototyping, development and deployment of audio applications including effects processors, multi-channel audio systems, MIDI synthesizers, and many other DSP-based audio projects.

The centerpiece of the SHARC Audio Module is the  Analog Devices ADSP-SC589 SHARC processor, a remarkable engine for  audio processing which incorporates dual SHARC+ DSP cores and an ARM  core. Accompanying the SHARC is an expert selected group of peripherals ideally suited for audio project development.

While the SHARC Audio Module can be used as a self-contained product, it is designed for custom expansion. Analog Devices is developing expansion boards (called “Fins”). The first in this series is an Audio Project Fin that plugs directly onto the main SHARC Audio Module.

In addition, there are several leading developers and board designers that provide a variety of software and hardware platforms for you to expand the SHARC Audio Module platform. Since all of the major functions and GPIO of the board can be accessed via the two multi-pin connectors, you can easily design and build your own expander. Documentation for these connectors can be found in the SHARC Audio Module Hardware Reference Manual.

This board is designed to be used in conjunction with the CrossCore^® Embedded Studio (CCES) development tools. The development environment aids advanced application code development and debug.

In addition to traditional C and C++ development, the SHARC Audio Module supports Faust (Functional Audio Stream), an open-source, functional programming language, specifically designed for real-time audio signal processing and synthesis. Faust generates C++, as well as other target languages, for signal processing applications. The Faust library provides a rich set of audio DSP objects that can be used in creating DSP algorithms. Using Faust, it is possible to quickly create large algorithms that take advantage of the computing power available on the SHARC Audio Module platform.

The user guide describes the design, setup, and operation of the EVAL-ADAU1472Z evaluation board, which allows users to evaluate the ADAU1472 SigmaDSP^® digital audio processor.

The EVAL-ADAU1472Z provides access to the digital serial audio ports of the ADAU1472 and some of the general-purpose input and outputs (GPIOs). The analog input and output is provided by the ADAU1761 codec included on the EVAL-ADAU1472Z.

The ADAU1472 can be configured in a variety of ways. The on-board serial flash memory can be programmed for self boot mode.

The EVAL-ADAU1472Z is powered by a 5 V dc supply, which is regulated to the voltages required on the board. The printed circuit board (PCB) is a 4-layer design with a ground plane and a power plane on the inner layers. The EVAL-ADAU1472Z includes connectors for external analog inputs and outputs and optical Sony/Philips digital interface (S/PDIF) interfaces.

For full details on the ADAU1472 and the ADAU1761, see the ADAU1472 and ADAU1761 data sheets, which must be used in conjunction with the user guide when using the EVAL-ADAU1472Z evaluation board.