Analog Devices Inc. ADSP-2186MKCA-300

Overview

ADSP-2186MKCA-300 from Analog Devices is a 75 MIPS fixed-point DSP microcomputer optimized for real-time signal processing in audio, telecom, and industrial control systems. It integrates 8K × 24-bit program RAM, 8K × 16-bit data RAM, dual synchronous serial ports (SPORT0/SPORT1), a 16-bit internal DMA port, and a programmable 16-bit interval timer - all within a single 100-lead LQFP package operating at 2.5 V core voltage.

For engineers reviewing the ADSP-2186MKCA-300 datasheet, ADSP-2186MKCA-300 pinout, ADSP-2186MKCA-300 application, or ADSP-2186MKCA-300 equivalent, key selection criteria include its 13.3 ns instruction cycle time, zero-overhead looping capability, byte-DMA support for EPROM booting, ICE-Port™ debug interface, and dual-mode memory interface (Full Memory or Host Mode) enabling flexible system integration.

Technical Context

The ADSP-2186MKCA-300 implements the ADSP-2100 base architecture with three independent computational units (ALU, MAC, Shifter), two data address generators (DAG1/DAG2), and a zero-overhead program sequencer supporting conditional jumps and subroutine calls in one cycle. Its 3-bus architecture enables simultaneous dual-operand fetches - one from program memory and one from data memory - per instruction cycle.

It supports two distinct system interface modes: Full Memory Mode (Mode C = 0) with 14-bit address bus (A13:A0) and 24-bit data bus (D23:D0), and Host Mode (Mode C = 1) using a multiplexed 16-bit IDMA port (IAD15:IAD0) with dedicated control signals (IWR, IRD, IAL, IS, IACK). SPORT0 and SPORT1 provide hardware companding (A-law/µ-law), frame-synchronized or frameless operation, and circular buffer DMA transfers with single-cycle overhead.

Key Specifications

Pinout & Package

ADSP-2186MKCA-300 is packaged in a 100-lead LQFP (ST-100) with 0.5 mm pitch. Pin functions are mode-dependent: Full Memory Mode uses A13:A0 and D23:D0 for external memory access; Host Mode repurposes pins for IAD15:IAD0, IWR, IRD, IAL, IS, and IACK. Common-mode pins (RESET, BR, BG, PMS, DMS, RD, WR, IRQ2, PF7–PF0, CLKIN/XTAL, CLKOUT, SPORT0/SPORT1, EZ-Port) retain consistent roles across modes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-point DSP applications.

Compared with ADSP-2186MKCA-300, ADSP-2189MKCA-300 offers higher clock frequency while maintaining full hardware and software compatibility, whereas TMS320C549PGE requires architectural rework but provides higher peak MIPS and broader third-party tool support.

Availability

ADSP-2186MKCA-300 is available at Aetrix Electronics and suitable for voice communication systems, digital audio equipment, industrial motor controllers, and test & measurement instruments requiring stable component supply and long-term obsolescence management.

Supply support for ADSP-2186MKCA-300 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 is a global leader in high-performance analog, mixed-signal, and DSP technology, serving industrial, automotive, communications, and consumer markets with precision signal processing solutions.

The ADSP-2186MKCA-300 belongs to the ADSP-2100 family of fixed-point DSP microcomputers designed specifically for cost-sensitive, low-power embedded signal processing applications where deterministic real-time performance and on-chip integration are critical.

FAQ

What is the maximum operating frequency and instruction throughput of the ADSP-2186MKCA-300?

The ADSP-2186MKCA-300 operates with a 13.3 ns instruction cycle time, delivering 75 million instructions per second (MIPS) sustained performance. This throughput is achieved with single-cycle instruction execution, zero-overhead looping, and a 3-bus architecture enabling dual operand fetches per cycle - all confirmed in the official Analog Devices datasheet Rev. 0, page 1.

Does the ADSP-2186MKCA-300 support booting from external memory, and if so, what interface is used?

Yes, the ADSP-2186MKCA-300 supports automatic booting from byte-wide external memory such as EPROM or Flash via its Byte DMA (BDMA) controller. In Full Memory Mode, the upper 8 bits of the D23:D0 data bus serve as byte memory address bits, enabling direct access to up to 4 MB of external storage - as specified in the General Description section (page 3) and MEMORY ARCHITECTURE chapter (page 14).

What debug interface does the ADSP-2186MKCA-300 provide, and is external hardware required?

The ADSP-2186MKCA-300 integrates an ICE-Port™ emulator interface (14-pin) supporting full-speed in-circuit debugging without removing the device from the target board. No adapters or sockets are needed - the EZ-ICE® emulator connects directly to the EZ-Port pins for breakpoint setting, register/memory inspection, and instruction-level boot emulation, as documented in the DEVELOPMENT SYSTEM section (page 3) and DESIGNING AN EZ-ICE-COMPATIBLE SYSTEM (page 16).

How does the ADSP-2186MKCA-300 handle memory addressing in Host Mode versus Full Memory Mode?

In Host Mode (Mode C = 1), the ADSP-2186MKCA-300 uses a 16-bit multiplexed IDMA port (IAD15:IAD0) with dedicated control signals (IWR, IRD, IAL, IS, IACK) for high-speed access to on-chip RAM. In Full Memory Mode (Mode C = 0), it employs separate 14-bit address (A13:A0) and 24-bit data (D23:D0) buses. The mode is latched at RESET and cannot be changed dynamically - details are in PIN DESCRIPTIONS (page 7).

What are the key differences between the ADSP-2186MKCA-300 and ADSP-2189MKCA-300?

The ADSP-2186MKCA-300 and ADSP-2189MKCA-300 share identical architecture, pinout, memory map, and peripheral set. The primary difference is clock speed: ADSP-2189MKCA-300 operates at 75 MHz (13.3 ns cycle), while ADSP-2186MKCA-300 is rated for 75 MIPS nominal performance under same conditions. Both support the same development tools and EZ-KIT Lite platform - per the ORDERING GUIDE (page 40) and GENERAL DESCRIPTION (page 3).