GENERAL DESCRIPTION

The ADSP-218xN series consists of six single chip microcomputers optimized for digital signal processing applica tions. The high-level block diagram for the ADSP-218xN series members appears on the previous page. All series members are pin-compatible and are differentiated solely by the amount of on-chip SRAM. This feature, combined with ADSP-21xx code compatibility, provides a great deal of flexibility in the design decision.

PERFORMANCE FEATURES

12.5 ns Instruction Cycle Time @1.8 V (Internal), 80 MIPS Sustained Performance

Single-Cycle Instruction Execution

Single-Cycle Context Switch

3-Bus Architecture Allows Dual Operand Fetches in Every Instruction Cycle

Multifunction Instructions

Power-Down Mode Featuring Low CMOS Standby

Power Dissipation with 200 CLKIN Cycle Recovery from Power-Down Condition

Low Power Dissipation in Idle Mode

INTEGRATION FEATURES

ADSP-2100 Family Code Compatible (Easy to Use Algebraic Syntax), with Instruction Set Extensions

Up to 256K Bytes of On-Chip RAM, Configured as

Up to 48K Words Program Memory RAM

Up to 56K Words Data Memory RAM

Dual-Purpose Program Memory for Both Instruction and Data Storage

Independent ALU, Multiplier/Accumulator, and Barrel Shifter Computational Units

Two Independent Data Address Generators

Powerful Program Sequencer Provides Zero Overhead Looping Conditional Instruction Execution

Programmable 16-Bit Interval Timer with Prescaler

100-Lead LQFP and 144-Ball Mini-BGA

ADSP-2185N属于集成电路（IC） > DSP（数字信号处理器）。亚德诺半导体技术有限公司制造生产的ADSP-2185NDSP（数字信号处理器）数字信号处理器是类似于微处理器或微控制器的器件，但区别在于其内部架构经修改，适用于对连续数据流连续执行以乘法和加法运算为主的算法，而不是以条件逻辑或大量并发进程为主的算法。该器件通常用于诸如音频或视频信号处理等应用。