Analog Devices Inc. ADSP-2188MKSTZ-300

Overview

ADSP-2188MKSTZ-300 from Analog Devices is a 75 MIPS fixed-point DSP microcomputer with 48K × 24-bit on-chip program RAM, 56K × 16-bit data RAM, dual synchronous serial ports (SPORT0/SPORT1), 16-bit internal DMA port, and 13.3 ns instruction cycle time. It executes single-cycle instructions and supports zero-overhead looping for real-time audio and telecom signal processing in portable battery-powered systems.

For engineers reviewing the ADSP-2188MKSTZ-300 datasheet, ADSP-2188MKSTZ-300 pinout, ADSP-2188MKSTZ-300 application, or ADSP-2188MKSTZ-300 equivalent, key selection considerations include full-memory vs. host-mode bus configuration, SPORT framing flexibility (3–16-bit words, A-law/µ-law companding), power-down recovery timing (200 CLKIN cycles), and ICE-Port™ debug interface compatibility with EZ-ICE emulators.

Technical Context

The ADSP-2188MKSTZ-300 implements the ADSP-2100 base architecture with three independent computational units: ALU, 40-bit MAC, and barrel shifter-each accessible via the shared Result (R) bus. Its dual DAGs support automatic modulo addressing for circular buffers, and the program sequencer enables conditional jumps and subroutine calls in one cycle.

It operates in two mutually exclusive external interface modes: Full Memory Mode (14-bit address/24-bit data bus, byte DMA, I/O memory space) or Host Mode (16-bit multiplexed IDMA address/data bus, IACK handshake). Mode selection is hardwired via Mode C pin at reset and cannot be changed dynamically.

Key Specifications

Pinout & Package

ADSP-2188MKSTZ-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 as IAD15:IAD0, IWR, IRD, IAL, IS, and IACK. Common-mode pins include RESET, BR/BG/BGH, PMS/DMS/IOMS/BMS/CMS, RD/WR, and 13 programmable flag pins (PF7–PF0, FL0–FL2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-2189MKSTZ-300, ADSP-2188MKSTZ-300 offers broader I/O configurability and lower system integration overhead for non-audio DSP tasks; versus TMS320C549PGE, it provides superior real-time peripheral integration and deterministic low-power behavior but requires migration from C54x development tools.

Availability

ADSP-2188MKSTZ-300 is available at Aetrix Electronics and suitable for voice processing systems, telecom line cards, portable medical monitors, and industrial motor control applications requiring stable component supply and long-term industrial lifecycle support.

Supply support for ADSP-2188MKSTZ-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 healthcare markets since 1965.

The ADSP-2188MKSTZ-300 belongs to the ADSP-2100 family of fixed-point DSP microcomputers designed for real-time embedded signal processing where deterministic timing, low power, and on-chip memory integration are critical.

FAQ

What is the maximum external memory size supported by ADSP-2188MKSTZ-300 in Full Memory Mode?

ADSP-2188MKSTZ-300 supports up to 4 MByte of external byte memory via its Byte DMA port and 4 MByte of external program/data memory via its 24-bit data bus and 14-bit address bus (16 MB address space). The 4 MByte limit for byte memory arises from the BDMA controller's 22-bit address capability (2²² = 4 MB), while full memory mode permits 16 MB addressing for program/data spaces using A13:A0.

Does ADSP-2188MKSTZ-300 support JTAG debugging?

No, ADSP-2188MKSTZ-300 does not support JTAG. It uses Analog Devices' proprietary ICE-Port™ interface-a 14-pin dedicated debug port compatible with EZ-ICE emulators. This interface provides full in-circuit emulation including breakpoint setting, register/memory inspection, and C source-level debugging, but requires the EZ-ICE hardware probe rather than standard JTAG tools.

Can ADSP-2188MKSTZ-300 operate with a 3.3 V supply on VDDEXT while using 2.75 V on VDDINT?

Yes, ADSP-2188MKSTZ-300 is explicitly designed for mixed-supply operation: VDDINT must be 2.75 V ± 0.15 V for core logic, while VDDEXT accepts either 2.75 V or 3.3 V ± 0.3 V for I/O. All input pins tolerate up to 3.6 V regardless of VDDEXT setting, enabling safe interfacing with 3.3 V peripherals even when VDDEXT is set to 2.75 V.

How many interrupt sources does ADSP-2188MKSTZ-300 support, and which are maskable?

ADSP-2188MKSTZ-300 supports 11 interrupt sources: 6 external (IRQ2, IRQL0, IRQL1, IRQE, IRQ0, IRQ1) and 5 internal (timer, SPORT0 Tx/Rx, SPORT1 Tx/Rx, BDMA, power-down). All except the nonmaskable power-down interrupt and RESET are individually maskable via the 11-bit IMASK register, allowing precise prioritization and selective disabling during critical code sections.

What is the function of the CMS, BMS, and IOMS pins on ADSP-2188MKSTZ-300?

On ADSP-2188MKSTZ-300, CMS (Combined Memory Select), BMS (Byte Memory Select), and IOMS (I/O Memory Select) are active-low output pins that decode external memory spaces in Full Memory Mode. CMS asserts for combined program/data accesses, BMS for byte memory transfers, and IOMS for I/O memory-mapped peripheral access-enabling glueless interfacing to multiple external devices without external address decoders.