ADSP-2162 Digital Signal Processor Technical Summary

Overview

The ADSP-2162 is a member of the ADSP-2100 family of single-chip microcomputers specifically optimized for digital signal processing (DSP) and high-speed numeric processing applications. Built upon a common DSP core architecture shared across the ADSP-21xx family, this processor combines powerful computation units with specialized peripherals and memory configurations to deliver exceptional performance in signal processing tasks.

With its Harvard architecture featuring separate program and data memory buses, the ADSP-2162 achieves true three-bus performance while maintaining efficient program sequencing through zero-overhead looping capabilities. The processor's 25 MIPS performance at 40ns instruction cycle times makes it particularly suitable for demanding real-time DSP applications.

Key Features

• High Performance Core: 25 MIPS operation with 40ns maximum instruction rate
• Advanced Memory Architecture: Separate on-chip buses for program and data memory with three-bus performance
• Efficient Data Handling: Dual data address generators supporting modulo and bit-reverse addressing
• Optimized Program Flow: Zero-overhead looping with single-cycle loop setup
• Boot Flexibility: Automatic booting of on-chip program memory from byte-wide external memory (e.g., EPROM)
• Serial Communication: Double-buffered serial ports with companding hardware and automatic data buffering
• Multichannel Operation: Support for multiple communication channels
• Host Interface: ADSP-2111 Host Interface Port for simplified system integration

Applications

The ADSP-2162's combination of processing power and specialized DSP features makes it ideal for a wide range of applications including:

Audio Processing

• Professional audio equipment
• Digital effects processors
• Audio compression/decompression systems

Telecommunications

• Modems and fax machines
• Digital telephone systems
• Voice compression and recognition systems

Industrial Control

• Motor control systems
• Precision measurement equipment
• Real-time monitoring systems

Medical Equipment

• Medical imaging systems
• Patient monitoring devices
• Diagnostic equipment

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (VDD): -0.3V to +7.0V
• Input Voltage: -0.3V to VDD + 0.3V
• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature: Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
• Clock Frequency: Up to 25 MHz

Power Consumption

• Typical Power Dissipation: 500mW @ 25MHz
• Maximum Power Dissipation: 750mW @ 25MHz
• Standby Mode Power: < 100mW

Timing Characteristics

• Instruction Cycle Time: 40ns (25MHz)
• Serial Port Clock Rate: Up to 12.5MHz
• Memory Access Time: 25ns (typical)

Architectural Details

Processor Core

The ADSP-2162 features a modified Harvard architecture with three separate buses: one for program memory and two for data memory. This architecture enables the processor to fetch an instruction and two data operands simultaneously, significantly improving throughput for DSP algorithms.

Computational Units

• Arithmetic Logic Unit (ALU): 16-bit fixed-point operations with multi-function capability
• Multiplier/Accumulator (MAC): 16-bit x 16-bit parallel multiplier with 32-bit result
• Barrel Shifter: Supports arithmetic and logical shifts up to 16 bits in a single cycle

Memory Organization

The ADSP-2162 features:

• On-chip program memory RAM
• On-chip data memory RAM
• External memory interface supporting up to 64K words of program memory and 64K words of data memory
• Program memory can store both instructions and data for maximum flexibility

Data Address Generators

The processor includes two dedicated data address generators (DAGs) that support:

• Modulo addressing for circular buffers
• Bit-reverse addressing for FFT operations
• Automatic address pointer updates
• Simultaneous dual operand fetches

Package Information

Available Packages

• 100-lead Plastic Quad Flat Pack (PQFP)
• 100-lead Ceramic Quad Flat Pack (CQFP)

Package Dimensions

• PQFP: 14mm x 14mm body, 0.65mm lead pitch
• CQFP: 14mm x 14mm body, 0.65mm lead pitch

Pin Configuration

The ADSP-2162's pinout is organized into functional groups including:

• Power and ground pins
• Clock and reset control
• Memory interface signals
• Serial port interfaces
• Host interface port
• Timer and interrupt signals

Development Support

Analog Devices provides comprehensive development support for the ADSP-2162 including:

Software Tools

• Assembler and linker
• C compiler with DSP extensions
• Debugger with real-time emulation
• Library of DSP algorithms

Hardware Tools

• Evaluation boards
• Emulator pods
• Development systems

Documentation

• Hardware reference manual
• Programming reference
• Application notes
• Design guidelines

Conclusion

The ADSP-2162 represents a powerful and flexible solution for digital signal processing applications requiring high performance in a single-chip package. Its combination of computational power, efficient memory architecture, and specialized DSP features makes it particularly suitable for real-time processing tasks in audio, telecommunications, industrial control, and medical applications. With comprehensive development support and reliable operation across industrial temperature ranges, the ADSP-2162 offers system designers a robust platform for implementing sophisticated DSP algorithms.