Analog Devices Inc. ADSP-2191MKSTZ-160

Overview

ADSP-2191MKSTZ-160 from Analog Devices is a 160 MIPS fixed-point DSP microcomputer with dual-memory architecture (32K × 24-bit program RAM + 32K × 16-bit data RAM), three full-duplex serial ports, two SPI-compatible ports, UART, 16-bit host port with DMA, and three programmable timers - deployed in telecom infrastructure, audio processing, and real-time control systems.

For engineers reviewing the ADSP-2191MKSTZ-160 datasheet, ADSP-2191MKSTZ-160 pinout, ADSP-2191MKSTZ-160 application, or ADSP-2191MKSTZ-160 equivalent, key selection factors include instruction cycle time (6.25 ns), on-chip memory configuration, serial interface count and TDM channel support (up to 128), host port width (8/16-bit), and 2.5 V core / 3.3 V I/O voltage compatibility.

Technical Context

The ADSP-2191MKSTZ-160 implements a pipelined Harvard architecture with three independent computational units (ALU, MAC, barrel shifter), two 16-bit DAGs with page registers for 24-bit addressing, and zero-overhead looping via hardware loop stacks. Its unified memory space supports simultaneous dual-operand fetches - one from program memory and one from data memory - enabled by separate PMA/PMD and DMA/DMD buses.

Peripherals are tightly integrated via shared DMA bus arbitration: SPORT0–2, SPI0–1, UART, Host Port, and memory DMA all operate concurrently under priority-based scheduling (e.g., SPORT0 receive has highest DMA arbitration priority). Booting is supported from external host, SPI ROM, or UART with autobaud detection, using 1K-word on-chip boot ROM located at Page 255.

Key Specifications

Pinout & Package

ADSP-2191MKSTZ-160 is housed in a 144-lead LQFP (Lead Count: 144, Body Size: 20 mm × 20 mm, Pitch: 0.5 mm), RoHS-compliant, thermally enhanced package with exposed thermal pad. Pin functions follow ADSP-219x family standard layout per Analog Devices datasheet Rev. A, pages 43–44.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-2191MKSTZ-160, ADSP-2191MKBZ-160 offers identical functionality in a smaller BGA footprint at the cost of soldering complexity, while ADSP-21992KSTZ delivers higher compute density and memory for next-generation signal processing - making the ADSP-2191MKSTZ-160 optimal for cost-sensitive, volume telecom and industrial control designs where 160 MIPS and 64K-word RAM are sufficient.

Availability

ADSP-2191MKSTZ-160 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motor control, and professional audio equipment requiring stable component supply and long-term manufacturing continuity.

Supply support for ADSP-2191MKSTZ-160 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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial systems.

The ADSP-219x product line was designed for real-time embedded signal processing in resource-constrained environments - emphasizing code efficiency, low-latency I/O, and deterministic execution for telecom, audio, and control applications.

FAQ

What is the maximum operating frequency of the ADSP-2191MKSTZ-160?

The ADSP-2191MKSTZ-160 operates at a 160 MHz internal clock derived from its programmable PLL, resulting in a 6.25 ns instruction cycle time. This frequency is fixed for the -160 speed grade and validated across commercial temperature range (0°C to +70°C) with 2.5 V core supply. The ADSP-2191MKSTZ-160 does not support overclocking beyond this rated speed.

Does the ADSP-2191MKSTZ-160 support JTAG debugging?

Yes, the ADSP-2191MKSTZ-160 includes full IEEE 1149.1-compliant JTAG Test Access Port (TAP) for boundary scan testing, real-time emulation, and non-intrusive debugging. It supports breakpoints, watchpoints, and register visibility without halting peripheral operation - essential for validating time-critical signal paths in the ADSP-2191MKSTZ-160.

How much on-chip memory does the ADSP-2191MKSTZ-160 have, and how is it organized?

The ADSP-2191MKSTZ-160 integrates 64K words of on-chip SRAM: 32K words × 24-bit configured as program memory and 32K words × 16-bit as data memory. This unified memory space is divided into four 16K-word blocks on Page 0, accessible via 24-bit PMA and DMA buses. Additionally, 1K words of on-chip boot ROM reside at Page 255 for initialization in the ADSP-2191MKSTZ-160.

Can the ADSP-2191MKSTZ-160 boot from an external SPI flash device?

Yes, the ADSP-2191MKSTZ-160 supports SPI-based booting through its SPI0 or SPI1 port, using autobaud detection and configurable clock polarity/phase. The on-chip boot ROM executes initialization code that loads the application image from external SPI flash into internal RAM before jumping to main(). This capability is fully implemented and tested in the ADSP-2191MKSTZ-160.

What are the power supply requirements for the ADSP-2191MKSTZ-160?

The ADSP-2191MKSTZ-160 requires two independent supplies: 2.5 V ± 0.125 V for the core logic (VDDINT) and 3.3 V ± 0.165 V for I/O banks (VDDIO). These must be sequenced such that VDDINT is stable before VDDIO ramps up. Decoupling capacitors (10 µF bulk + 0.1 µF ceramic per supply) are mandatory adjacent to the ADSP-2191MKSTZ-160 power pins to ensure signal integrity.