ANALOG DEVICES SPI Booting of the ADSP-2191 using the Atmel AD25020N on an EZ-KIT Lite Evaluation Board Manual

About this manual

This document provides instructions on interfacing an ATMEL EEPROM (AT 25020) to enable SPI booting for the Analog Devices ADSP-2191 digital signal processor. It details how to create a loader file using VisualDSP++ 2.0 and explains the hardware configuration required.

What's inside

• Introduction
• VisualDSP++ Project Setup
• ADSP-2191 Startup basics
• Serial Peripheral Interface (SPI)
• Boot stream format
• Flag Functions

Frequently asked questions

What is the primary purpose of the ADSP-2191 described in this note?

The ADSP-2191 is the first DSP that provides booting via SPI.

Which specific EEPROM is used to demonstrate SPI booting?

The note shows how to interface an ATMEL EEPROM (AT 25020) in order to boot the ADSP-2191 via the SPI interface.

What is the width of the boot kernel stored on-chip?

The boot kernel is located on-chip and stored in a 24-bit wide, 1K ROM.

What is the width of the data received from the SPI EEPROM during booting?

During booting, the data received from the SPI EEPROM is eight bits wide.