**ADSP-2184NKSTZ-320: A Comprehensive Technical Overview of Analog Devices' High-Performance DSP**
The **ADSP-2184NKSTZ-320** stands as a pinnacle of Analog Devices' commitment to high-performance digital signal processing. As a member of the venerable ADSP-2100 family, this DSP combines raw computational power with a highly integrated feature set, making it a historically significant and robust solution for demanding real-time processing applications. This article provides a detailed technical examination of its architecture, key features, and target use cases.
At the heart of the ADSP-2184N operates a **32-bit fixed-point computational core** capable of executing a single instruction per cycle. This core is optimized for the complex mathematical operations inherent to DSP algorithms, featuring a **16-bit internal data bus** and a **24-bit instruction word**. The processor's modified Harvard architecture allows for simultaneous fetches of both instruction and data, significantly enhancing throughput and eliminating bottlenecks. With a core clock speed of **40 MHz** and an instruction cycle time of **25 ns**, the "320" variant delivers a peak performance of **40 MIPS (Million Instructions Per Second)**, enabling it to handle intensive tasks like filtering, compression, and modulation with exceptional efficiency.
A defining characteristic of this DSP is its substantial **on-chip memory configuration**. It is equipped with **80 Kilobytes of internal RAM**, partitioned into 16K words (24-bit) for program memory and 16K words (16-bit) for data memory. This extensive integrated memory is a critical advantage, as it allows the processor to access code and data at full speed without the wait states typically associated with external memory accesses. This architecture is essential for maintaining the deterministic, real-time performance required in critical applications.
Beyond its core and memory, the ADSP-2184NKSTZ-320 is distinguished by its high level of peripheral integration. It includes two **double-buffered serial ports (SPORTs)** supporting a variety of serial data protocols with hardware companding (μ-law and A-law). It also features an **internal DMA (Direct Memory Access) controller**, which offloads the core by managing data transfers between the serial ports and memory autonomously. Furthermore, it incorporates a **programmable interval timer**, a **host interface port (HIP)** for easy connection to a host microprocessor, and **16 bits of programmable flag I/O**. This integration reduces system component count, lowers overall power consumption, and simplifies board design.
The device is offered in a **100-lead LQFP (Low-Profile Quad Flat Pack)** package, denoted by the "STZ" suffix, which is suitable for surface-mount technology. The "N" in its part number signifies its qualification for extended temperature ranges and robust industrial applications, ensuring reliability in harsh operating environments.
**ICGOOODFIND**: The ADSP-2184NKSTZ-320 remains a testament to a highly integrated, performance-driven DSP design. Its powerful core, ample on-chip RAM, and comprehensive suite of integrated peripherals made it an ideal engine for a wide array of applications, including **professional audio equipment, telecommunications infrastructure, industrial control systems, and military-grade electronics**.
**Keywords**: High-Performance DSP, On-Chip Memory, Fixed-Point Processor, Integrated Peripherals, Real-Time Processing.
