ADSP-2164 Digital Signal Processor Technical Summary

Overview

The ADSP-2164 is a member of the ADSP-2100 family of single-chip microcomputers specifically optimized for digital signal processing (DSP) and other high-speed numeric processing applications. Built upon a common core architecture shared across the ADSP-21xx processor family, the ADSP-2164 combines powerful computation units with specialized peripherals and memory configurations to deliver exceptional performance in real-time signal processing applications.

This processor features the core DSP architecture including computation units, data address generators, and program sequencer, enhanced with differentiating features such as on-chip program and data memory RAM, programmable timer, and serial ports. With its 25 MIPS performance and 40ns maximum instruction rate, the ADSP-2164 is particularly well-suited for demanding DSP applications requiring both speed and efficiency.

Key Features

• High Performance Processing: 25 MIPS performance with 40ns maximum instruction rate
• Advanced Memory Architecture: Separate on-chip buses for program and data memory (Harvard architecture)
• Three-Bus Performance: Program memory stores both instructions and data
• Efficient Data Handling: Dual data address generators with 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 easy system integration

Applications

The ADSP-2164 is designed for a wide range of digital signal processing applications, including:

• Audio signal processing and effects
• Speech recognition and synthesis systems
• Telecommunications equipment (modems, digital phones)
• Industrial control systems
• Medical imaging and instrumentation
• Radar and sonar signal processing
• Automotive sound systems
• Noise cancellation systems
• Biometric signal processing

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (VDD): -0.3V to +7V
• 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 (VDD): 4.75V to 5.25V
• Operating Temperature: Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
• Clock Frequency: Up to 25MHz

Power Consumption

• Active Mode: 500mW typical at 25MHz
• Idle Mode: 200mW typical
• Power-down Mode: 50μW maximum

Architectural Details

Computation Units

The ADSP-2164 features three independent computation units:

• Arithmetic Logic Unit (ALU): Performs standard arithmetic and logical operations
• Multiplier/Accumulator (MAC): High-speed 16×16-bit multiplier with 40-bit accumulator
• Barrel Shifter: Enables fast shifting operations for numeric formatting

Memory Organization

The processor features:

• 1K × 24-bit on-chip program memory RAM
• 1K × 16-bit on-chip data memory RAM
• 16-bit external memory interface supporting up to 64K words
• Separate program and data memory spaces

Program Control

• Two-level program sequencer
• Zero-overhead looping
• Single-cycle context switching
• Interrupt controller with 9 maskable interrupts

Peripheral Features

Serial Ports

The ADSP-2164 includes two full-duplex serial ports with:

• Hardware companding (μ-law/A-law)
• Automatic data buffering
• Multichannel operation support
• Double buffering for continuous data flow

Programmable Timer

The on-chip timer features:

• 24-bit programmable period
• 8-bit prescaler
• Interrupt generation capability

Package Information

Available Packages

• 100-lead PQFP (Plastic Quad Flat Pack)
• 100-lead TQFP (Thin Quad Flat Pack)

Package Dimensions

• PQFP: 14mm × 14mm body, 1.4mm height
• TQFP: 14mm × 14mm body, 1.0mm height

Pin Configuration

The ADSP-2164 pinout includes:

• Power and ground pins for core and I/O
• Clock input and oscillator connections
• External memory interface signals
• Serial port connections
• Timer and interrupt pins
• Host interface signals
• Configuration and bootstrap pins

Development Support

The ADSP-2164 is supported by a comprehensive development environment including:

• Assembler and linker tools
• C compiler with DSP extensions
• Software simulator
• Emulation hardware
• Application libraries for common DSP functions

Conclusion

The ADSP-2164 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 integrated peripherals makes it particularly suitable for real-time signal processing tasks across a wide range of industries. The processor's ability to handle complex algorithms while maintaining low power consumption ensures its continued relevance in both existing and emerging DSP applications.