Analog Devices Inc. ADSP-2184NKCA-320

Overview

ADSP-2184NKCA-320 from Analog Devices is a 16-bit fixed-point DSP microcomputer optimized for real-time signal processing in embedded systems. It delivers 80 MIPS sustained performance at 12.5 ns instruction cycle time (1.8 V core), features 4K words of on-chip program RAM and 4K words of data RAM, dual SPORTs with hardware companding, and supports full-memory and host modes for flexible system integration in audio, telecom, and industrial control applications.

For engineers reviewing the ADSP-2184NKCA-320 datasheet, ADSP-2184NKCA-320 pinout, ADSP-2184NKCA-320 application, or ADSP-2184NKCA-320 equivalent, key selection criteria include its 100-lead LQFP package, 1.8 V core voltage with 3.3 V I/O tolerance, single-cycle context switch capability, ICE-Port™ debug interface compatibility, and boot-from-byte-memory support via BDMA port.

Technical Context

The ADSP-2184NKCA-320 implements the ADSP-2100 family base architecture with three independent computational units (ALU, MAC, shifter), two dedicated DAGs, and a zero-overhead program sequencer. Its 3-bus Harvard architecture enables simultaneous dual operand fetches per instruction cycle - one from program memory and one from data memory - while supporting multifunction instructions that combine data moves and computation.

It integrates two double-buffered serial ports (SPORT0/SPORT1) with programmable frame sync, 3–16-bit word length, and A-law/μ-law companding per CCITT G.711. Memory interface includes 16-bit internal DMA port, byte DMA port for up to 4 MB external memory, and programmable wait-state generation for glueless interfacing with slow peripherals.

Key Specifications

Pinout & Package

The ADSP-2184NKCA-320 is housed in a 100-lead LQFP package with exposed thermal pad. Pin functions are defined per Analog Devices Rev. A datasheet (pages 18–40), supporting full-memory and host-mode configurations via MODE A–D pins (PF0–PF3). All power and ground pins are distributed across multiple corners for low-noise operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DSP microcomputer applications.

Compared with ADSP-2184NKCA-320, ADSP-2185NKCA-320 offers scalable memory for growth without changing PCB layout, while TMS320VC5402PGE trades integrated peripherals for higher clock speed and broader third-party ecosystem support - both require revalidation of timing-critical code paths.

Availability

ADSP-2184NKCA-320 is available at Aetrix Electronics and suitable for voice communications terminals, portable audio processors, and industrial motor controllers requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for ADSP-2184NKCA-320 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and DSP technology, headquartered in Norwood, MA, serving industrial, automotive, communications, and healthcare markets since 1965.

The ADSP-218xN series was designed as a low-power, code-compatible evolution of the ADSP-2100 family - targeting cost-sensitive, battery-operated, and real-time embedded systems where deterministic execution and integrated serial interfaces reduce system-level complexity.

FAQ

What is the maximum operating frequency and instruction cycle time of the ADSP-2184NKCA-320?

The ADSP-2184NKCA-320 operates with a 12.5 ns instruction cycle time, delivering 80 MIPS sustained performance. This is achieved using a 40 MHz external clock input (CLKIN) or a 40 MHz crystal oscillator (CLKIN/XTAL), which the internal circuitry doubles to generate the 80 MHz instruction clock. The device maintains this timing across its specified operating temperature and voltage ranges, and all instructions execute in exactly one cycle under normal conditions.

Does the ADSP-2184NKCA-320 support automatic boot from external memory?

Yes, the ADSP-2184NKCA-320 supports automatic boot from byte-wide external memory such as EPROM or flash via its Byte DMA (BDMA) port. When configured in Mode C = 0 and Mode A = 0 (passive boot mode), the device loads the first 32 words of program memory from byte memory space before beginning execution. This feature is confirmed in the ADSP-218xN Rev. A datasheet Section "Modes Of Operation" and eliminates the need for external boot ROM initialization logic.

What are the power management capabilities of the ADSP-2184NKCA-320?

The ADSP-2184NKCA-320 provides three low-power modes: Power-Down (200 CLKIN cycle wake-up), Idle (indefinite wait until interrupt), and Slow Idle (IDLE(n) with programmable divisors 16/32/64/128). These are controlled via dedicated PWD pin and software instructions. Power dissipation drops significantly in each mode, with standby current in Power-Down mode specified in the Electrical Characteristics table - enabling multi-day battery life in portable voice recorders and handheld test equipment.

Is the ADSP-2184NKCA-320 pin-compatible with other ADSP-218xN series devices?

Yes, all ADSP-218xN series members - including ADSP-2184NKCA-320, ADSP-2185NKCA-320, and ADSP-2189NKCA-320 - are fully pin-compatible in both 100-lead LQFP and 144-ball BGA packages. They share identical pinouts, signal definitions, and timing specifications; differentiation is solely based on on-chip memory size. This allows hardware reuse across product variants and simplifies migration paths during design iteration or volume ramp.

What debug interface does the ADSP-2184NKCA-320 support?

The ADSP-2184NKCA-320 supports the ICE-Port™ emulator interface, a proprietary JTAG-compliant debug architecture developed by Analog Devices. It enables full visibility into program flow, register states, and memory contents during development and in-system validation. ICE-Port works with VisualDSP++ and compatible emulators (e.g., ADZS-USB-ICE), providing non-intrusive breakpoints, real-time trace, and memory read/write access without impacting real-time performance of the ADSP-2184NKCA-320.