Analog Devices Inc. ADSP-2189MKSTZ-300

Overview

ADSP-2189MKSTZ-300 from Analog Devices is a 75 MIPS fixed-point DSP microcomputer with 32K × 24-bit on-chip program RAM, 48K × 16-bit on-chip data RAM, and dual synchronous serial ports (SPORT0/SPORT1). It executes instructions in 13.3 ns cycles, supports zero-overhead looping, and targets real-time audio processing, telecom channel coding, and embedded control systems requiring deterministic low-latency computation.

For engineers reviewing the ADSP-2189MKSTZ-300 datasheet, ADSP-2189MKSTZ-300 pinout, ADSP-2189MKSTZ-300 application, or ADSP-2189MKSTZ-300 equivalent, key selection criteria include instruction cycle time, on-chip memory configuration, serial port framing flexibility, power-down recovery latency, and ICE-Port™ debug interface compatibility.

Technical Context

The ADSP-2189MKSTZ-300 implements the ADSP-2100 base architecture with three independent computational units (ALU, MAC, shifter), two dedicated data address generators (DAG1/DAG2), and a zero-overhead program sequencer. Its 3-bus architecture enables simultaneous dual operand fetches - one from program memory and one from data memory - in every instruction cycle.

It integrates a 16-bit internal DMA port (IDMA), an 8-bit byte DMA port (BDMA), and programmable wait-state generation for interfacing with slow peripherals. Serial port operation supports hardware companding (A-law/µ-law per CCITT G.711), frameless or framed modes, and 3–16-bit word lengths with independent transmit/receive framing.

Key Specifications

Pinout & Package

ADSP-2189MKSTZ-300 is housed in a 100-lead LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functionality is mode-dependent: Full Memory Mode (Mode C = 0) uses A13:A0 and D23:D0 for external addressing/data; Host Mode (Mode C = 1) configures IAD15:IAD0 as multiplexed IDMA address/data bus.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-2189MKSTZ-300, the -266 variant delivers higher compute density but increases power and thermal demands, while the TMS320VC5402PGE100 offers TI-specific tooling at the cost of reduced I/O flexibility and no hardware companding support.

Availability

ADSP-2189MKSTZ-300 is available at Aetrix Electronics and suitable for telecom infrastructure, professional audio equipment, industrial motor drives, and portable test instrumentation requiring stable component supply across extended production lifecycles.

Supply support for ADSP-2189MKSTZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADSP-21xx family - including ADSP-2189MKSTZ-300 - was engineered for deterministic real-time DSP tasks in resource-constrained embedded systems, emphasizing low-latency I/O, on-chip memory efficiency, and debuggability in final products.

FAQ

What clock source options does the ADSP-2189MKSTZ-300 support?

The ADSP-2189MKSTZ-300 accepts either an external TTL-compatible clock signal applied to CLKIN (at half the instruction rate) or a parallel-resonant fundamental-mode crystal connected across CLKIN and XTAL. When using a crystal, two load capacitors must be added per manufacturer specifications. The internal oscillator circuit automatically stabilizes the clock, and CLKOUT can be enabled to monitor the internal instruction clock rate.

How does the ADSP-2189MKSTZ-300 handle power management in battery-powered systems?

The ADSP-2189MKSTZ-300 implements three low-power states: Power-Down (200 CLKIN-cycle wake-up), Idle (indefinite wait until interrupt), and Slow Idle (programmable clock divisor of 16/32/64/128). Power-down is triggered by PWD pin assertion or software command, with PWDACK confirming entry. All modes retain on-chip RAM contents, enabling rapid context restoration without reloading firmware.

Can the ADSP-2189MKSTZ-300 boot directly from external memory?

Yes, the ADSP-2189MKSTZ-300 supports automatic booting from byte-wide external memory (e.g., EPROM) via its Byte DMA port, or from external devices through the 16-bit Internal DMA port. Boot mode is selected during RESET using Mode pins. The processor copies boot code into on-chip program RAM before execution, eliminating external memory access latency during runtime.

What debug capabilities does the ADSP-2189MKSTZ-300 provide for production systems?

The ADSP-2189MKSTZ-300 integrates on-chip ICE-Port™ emulation support accessible via a 14-pin EZ-Port connector. This enables in-target debugging, up to 20 hardware breakpoints, register/memory inspection/modification, PC upload/download, and C-source-level debugging - all without removing the device from the target board or requiring adapter hardware.

Is the ADSP-2189MKSTZ-300 pin-compatible with other ADSP-218x variants?

Yes, the ADSP-2189MKSTZ-300 shares identical 100-lead LQFP packaging, pinout, and electrical characteristics with other speed grades in the ADSP-2189M series (e.g., ADSP-2189MKSTZ-266). All variants use the same footprint, thermal pad layout, and signal assignments, allowing drop-in replacement where timing and power constraints permit.