Analog Devices EE-167 Introduction to TigerSHARC Multiprocessor Systems Using VisualDSP++

About this manual

This document serves as an introduction to multiprocessor (MP) system implementation using Analog Devices TigerSHARC processors and the VisualDSP++ 3.0 development environment. It focuses on systems where processors share the external bus, utilizing assembly code examples written for the ADDS-TS101S EZ-Kit Lite, which consists of two TigerSHARC processors.

The guide details the configuration of Linker Description Files (LDF) for multiprocessor projects, explaining commands such as MPMEMORY, MEMORY, PROCESSOR, and SHARED_MEMORY. It further covers the Multiprocessor Memory Space (MMS), external memory setup (specifically SDRAM), Vector Interrupts (VIRPT) for inter-processor communication, and the use of semaphores for task synchronization.

What's inside

• Introduction
• Linker Description File (LDF)
• Multiprocessor Memory Space (MMS)
• External Memory
• Vector Interrupt (VIRPT)
• Bus Lock and Semaphores

Frequently asked questions

What hardware kit is used for the assembly code examples in this note?

The examples are based on the ADDS-TS101S EZ-Kit Lite, which consists of two TigerSHARC processors.

What is the maximum number of ADSP-TS101S processors supported in one LDF?

The maximum number of processors that can be declared in one LDF is eight.

Which DSP ID is required to initialize SDRAM in a multiprocessor system?

A DSP with ID=000 must be present because it performs the initialization of the SDRAM.