Analog Devices Inc. ADSP-2186MKSTZ-300

Overview

ADSP-2186MKSTZ-300 from Analog Devices is a 75 MIPS fixed-point DSP microcomputer with 8K × 24-bit on-chip program RAM, 8K × 16-bit data RAM, dual synchronous serial ports (SPORT0/SPORT1), and 13.3 ns instruction cycle time at 2.5 V. It executes single-cycle instructions, supports zero-overhead looping, and targets real-time audio processing, telecom channel banks, and industrial control systems requiring deterministic low-latency computation.

For engineers reviewing the ADSP-2186MKSTZ-300 datasheet, ADSP-2186MKSTZ-300 pinout, ADSP-2186MKSTZ-300 application, or ADSP-2186MKSTZ-300 equivalent, key selection criteria include its 100-lead LQFP package, 2.5 V core supply with 3.3 V I/O tolerance, internal DMA port for glueless host interfacing, and ICE-Port™ debug support for in-system emulation without board modification.

Technical Context

The ADSP-2186MKSTZ-300 implements the ADSP-2100 base architecture with three independent computational units: ALU, 40-bit MAC, and barrel shifter-enabling simultaneous arithmetic, multiply-accumulate, and normalization in one cycle. Its dual DAGs support circular buffer addressing for FFT and FIR filtering.

It operates in Full Memory Mode (Mode C = 0) or Host Mode (Mode C = 1), with configurable external bus interface: 14-bit address/24-bit data bus in Full Memory Mode or 16-bit multiplexed IDMA port in Host Mode. SPORT0 supports TDM up to 32 channels; SPORT1 can be reconfigured for dual IRQ inputs and flag I/O.

Key Specifications

Pinout & Package

ADSP-2186MKSTZ-300 is housed in a 100-lead LQFP package (ST-100 outline). Pin functions are mode-dependent: Full Memory Mode (Mode C = 0) uses A13:A0 and D23:D0 for external memory access; Host Mode (Mode C = 1) repurposes pins for 16-bit IDMA port (IAD15:IAD0), IWR, IRD, IAL, IS, and IACK.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-2186MKSTZ-300, ADSP-2189MKSTZ-300 offers faster clocking and integrated audio I/O but sacrifices general-purpose memory interface flexibility, while TMS320VC5402PGE100 delivers higher MIPS and larger memory but demands external components for voice-band features ADSP-2186MKSTZ-300 provides on-die.

Availability

ADSP-2186MKSTZ-300 is available at Aetrix Electronics and suitable for industrial motor control, telecom line card design, and portable audio instrumentation requiring stable component supply across multi-year production cycles.

Supply support for ADSP-2186MKSTZ-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 digital signal processing semiconductors, serving industrial, automotive, communications, and consumer markets since 1965.

The ADSP-2186MKSTZ-300 belongs to the ADSP-2100 family of fixed-point DSP microcomputers designed for deterministic real-time signal processing in resource-constrained embedded systems with stringent power and latency requirements.

FAQ

What is the maximum operating frequency of the ADSP-2186MKSTZ-300?

The ADSP-2186MKSTZ-300 achieves a 13.3 ns instruction cycle time, corresponding to a maximum CLKIN frequency of 75 MHz. This timing is guaranteed under recommended operating conditions: VDDINT = 2.5 V ± 0.1 V, VDDEXT = 2.5 V or 3.3 V ± 0.15 V, and ambient temperature from –40°C to +85°C. The ADSP-2186MKSTZ-300 does not support overclocking beyond this specification.

Does the ADSP-2186MKSTZ-300 support booting from external memory?

Yes, the ADSP-2186MKSTZ-300 supports automatic booting from byte-wide external memory (e.g., EPROM) via its Byte DMA port or from an external host through the Internal DMA port (IDMA). Boot mode is determined by MODE pins at reset; configuration is latched and cannot be changed dynamically during operation.

Can SPORT0 and SPORT1 operate simultaneously with different frame formats?

Yes, SPORT0 and SPORT1 are fully independent. Each port has separate control registers for clock generation, frame sync polarity, word length (3–16 bits), and companding mode (A-law or µ-law). They may run in framed or frameless modes concurrently-for example, SPORT0 handling TDM voice traffic while SPORT1 manages a proprietary sensor interface.

What debug capabilities does the ADSP-2186MKSTZ-300 provide?

The ADSP-2186MKSTZ-300 integrates a 14-pin ICE-Port™ interface supporting full in-circuit emulation: real-time register/memory inspection, up to 20 hardware breakpoints, single-step or full-speed execution, and C-source-level debugging. No target board modifications or socket replacement is required-the ADSP-2186MKSTZ-300 remains in place during development.

Is the ADSP-2186MKSTZ-300 pin-compatible with other ADSP-218x devices?

No, the ADSP-2186MKSTZ-300 is not pin-compatible with ADSP-2181, ADSP-2185, or ADSP-2189. While sharing the ADSP-2100 architecture, differences in memory interface configuration (e.g., BDMA vs. IDMA pin assignments), SPORT pin multiplexing, and ICE-Port layout require unique PCB layouts for each variant. Refer to the specific package pinout diagrams in the ADSP-2186M datasheet.