2186

ADSP-2186 Digital Signal Processor Technical Summary

Overview

The ADSP-2186 is a high-performance, single-chip microcomputer optimized for digital signal processing (DSP) applications. This member of the ADSP-2100 family combines the processor core with significant on-chip memory and versatile system interface features. With its 25 ns instruction cycle time (40 MIPS sustained performance), the ADSP-2186 delivers exceptional computational power for demanding signal processing tasks while maintaining code compatibility with the ADSP-2100 family.

The processor features a modified Harvard architecture with three separate buses for simultaneous instruction and data access. Its instruction set supports single-cycle execution of most operations, including multifunction instructions that perform multiple operations in parallel. The ADSP-2186 is particularly well-suited for applications requiring intensive numeric processing such as telecommunications, audio processing, and industrial control systems.

Key Features

• High Performance DSP Core
  • 40 MIPS sustained performance (25 ns instruction cycle)
  • Single-cycle instruction execution
  • Single-cycle context switching
  • Three-bus architecture enables dual operand fetches per cycle
• Computational Units
  • Independent ALU, multiplier/accumulator, and barrel shifter
  • Two independent data address generators
  • Powerful program sequencer with zero-overhead looping
• Memory Configuration
  • 40K bytes on-chip RAM (8K words program memory, 8K words data memory)
  • Dual-purpose program memory for instruction and data storage
  • 4 MByte byte memory interface for data tables and program overlays
• System Interfaces
  • 16-bit internal DMA port
  • 8-bit DMA to byte memory
  • I/O memory interface with 2048 locations
  • Programmable memory strobes and wait state generation
• Peripheral Features
  • Two double-buffered serial ports with companding hardware
  • Programmable 16-bit interval timer with prescaler
  • Six external interrupts
  • 13 programmable flag pins
• Power Management
  • Power-down mode with low standby power
  • 100 cycle recovery from power-down
  • Low power dissipation in idle mode

Applications

The ADSP-2186 is designed for demanding signal processing applications across multiple industries:

• Telecommunications
  • Modems and data communication equipment
  • Digital cellular systems
  • Voice processing and compression
• Audio Processing
  • Professional audio equipment
  • Digital effects processors
  • Speech recognition systems
• Industrial Control
  • Motor control systems
  • Precision instrumentation
  • Real-time control systems
• Consumer Electronics
  • Digital audio/video equipment
  • Advanced gaming systems
  • Home automation controllers
• Military/Aerospace
  • Radar and sonar signal processing
  • Secure communications
  • Avionics systems

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (VDD): -0.3V to +7.0V
• Input Voltage: -0.3V to VDD + 0.3V
• Operating Temperature Range (Commercial): 0°C to +70°C
• Operating Temperature Range (Industrial): -40°C to +85°C
• Storage Temperature Range: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage (VDD): 4.75V to 5.25V
• Input High Voltage (VIH): 2.0V min
• Input Low Voltage (VIL): 0.8V max
• Output High Voltage (VOH): 2.4V min
• Output Low Voltage (VOL): 0.4V max

Power Consumption

• Active Mode (40 MHz): 500 mW typical
• Idle Mode: 100 mW typical
• Power-Down Mode: 10 μW typical

Package Information

The ADSP-2186 is available in a 100-lead Thin Quad Flat Pack (TQFP) package with the following mechanical specifications:

• Package Dimensions: 14mm × 14mm body
• Lead Pitch: 0.5mm
• Lead Count: 100
• Package Height: 1.2mm max
• Lead Material: Copper alloy
• Lead Finish: Matte tin

Pin Configuration

The 100-pin TQFP package organizes signals into functional groups:

• Power Pins: Multiple VDD and GND pins for power distribution
• Memory Interface: Address, data, and control signals
• DMA Port: 16-bit bidirectional data bus and control signals
• Serial Ports: Clock, frame sync, and data lines for both ports
• Interrupts/Flags: External interrupt inputs and programmable flag outputs
• System Control: Reset, power down, and mode selection
• Emulation: ICE-Port interface for debugging

Development Support

The ADSP-2186 is supported by comprehensive development tools:

• Software Tools
  • VisualDSP++ integrated development environment
  • C and assembly compilers
  • Debugger with simulator support
• Hardware Tools
  • EZ-KIT Lite evaluation boards
  • Emulators for real-time debugging
  • ICE-Port interface for in-circuit emulation
• Documentation
  • Hardware reference manuals
  • Programming guides
  • Application notes for common DSP algorithms

Ordering Information

The ADSP-2186 is available in different speed grades and temperature ranges:

• ADSP-2186BST-40: 40 MHz, Commercial (0°C to +70°C)
• ADSP-2186BSTZ-40: 40 MHz, Commercial, Lead-free
• ADSP-2186BST-40I: 40 MHz, Industrial (-40°C to +85°C)
• ADSP-2186BSTZ-40I: