Analog Devices Inc. ADSP-2188NKCAZ-320

Overview

ADSP-2188NKCAZ-320 from Analog Devices is a 16-bit fixed-point DSP microcomputer optimized for real-time signal processing in embedded audio, telecom, and industrial control systems. It delivers 80 MIPS sustained performance at 12.5 ns instruction cycle time (1.8 V core), features 48K × 24-bit on-chip program RAM and 56K × 16-bit data RAM, and supports dual serial ports with hardware companding for voice-band applications.

For engineers reviewing the ADSP-2188NKCAZ-320 datasheet, ADSP-2188NKCAZ-320 pinout, ADSP-2188NKCAZ-320 application, or ADSP-2188NKCAZ-320 equivalent, key selection criteria include on-chip memory configuration, 100-lead LQFP package compatibility, low-power modes (power-down, idle, slow-idle), ICE-Port™ debug interface support, and byte DMA port capability for EPROM booting.

Technical Context

The ADSP-2188NKCAZ-320 implements the ADSP-2100 base architecture with three independent computational units (ALU, MAC, shifter), two dedicated data address generators (DAGs), and a zero-overhead loop-capable program sequencer. Its 3-bus Harvard architecture enables simultaneous dual operand fetches - one from program memory and one from data memory - in every instruction cycle.

It integrates two double-buffered synchronous serial ports (SPORT0/SPORT1) supporting 3–16-bit word lengths, A-law/μ-law companding per CCITT G.711, and multichannel TDM on SPORT0 (24/32-word streams). Memory interface includes 16-bit internal DMA port, 8-bit byte DMA port for 4 MB external addressing, and programmable wait-state generation for glueless peripheral interfacing.

Key Specifications

Pinout & Package

ADSP-2188NKCAZ-320 is housed in a 100-lead LQFP (Lead Count: 100, Body Size: 14 mm × 14 mm, Pitch: 0.5 mm), with thermal pad exposed on underside for enhanced heat dissipation. Pin functions are defined per Analog Devices Rev. A datasheet (pages 18–40).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-2188NKCAZ-320, ADSP-2189NKCAZ-320 offers identical architecture and pinout but less on-chip memory, while TMS320VC5402PGE provides higher peak MIPS but requires software-based companding and lacks the ADSP-218xN's integrated boot DMA and ICE-Port™ system-level debug capability.

Availability

ADSP-2188NKCAZ-320 is available at Aetrix Electronics and suitable for voice communications terminals, digital audio processors, and industrial motor controllers requiring stable component supply across extended production lifecycles.

Supply support for ADSP-2188NKCAZ-320 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 company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.

The ADSP-218xN series was designed as a low-power, code-compatible evolution of the ADSP-2100 family, targeting cost-sensitive, real-time embedded DSP applications requiring integrated memory, serial interfaces, and debug infrastructure - particularly in portable and battery-operated equipment.

FAQ

What is the maximum operating frequency and instruction cycle time of the ADSP-2188NKCAZ-320?

The ADSP-2188NKCAZ-320 operates at a 12.5 ns instruction cycle time, delivering 80 MIPS sustained performance. This is achieved with a 40 MHz input clock (CLKIN) - which the internal PLL doubles to generate the 80 MHz instruction rate - and requires a 1.8 V core supply. The device maintains this performance across its specified temperature and voltage ranges per Analog Devices Rev. A datasheet Section "Recommended Operating Conditions".

Does the ADSP-2188NKCAZ-320 support automatic booting from external memory?

Yes, the ADSP-2188NKCAZ-320 supports automatic booting via its byte DMA (BDMA) port from byte-wide external memory such as EPROM. When configured in Mode C = 0, Mode A = 0 (Full Memory Mode), the device loads the first 32 words of program memory from byte memory space before starting execution. Boot configuration is controlled by MODE A–D pins at reset, as detailed in Table 2 of the ADSP-218xN datasheet Rev. A.

What debug interface does the ADSP-2188NKCAZ-320 provide, and is it usable in final systems?

The ADSP-2188NKCAZ-320 features the ICE-Port™ emulator interface, a dedicated 4-pin debug port that supports non-intrusive real-time debugging, breakpointing, and trace in deployed systems. Unlike standard JTAG, ICE-Port™ operates concurrently with normal program execution and requires no dedicated debug resources from the application code, making it fully suitable for validation and diagnostics in final products.

How does the ADSP-2188NKCAZ-320 manage low-power operation in battery-powered devices?

The ADSP-2188NKCAZ-320 implements three hardware-supported low-power modes: Power-Down (200 CLKIN recovery, <10 μA standby), Idle (clock-gated, interrupt-wakeup), and Slow Idle (IDLE(n) with programmable clock divisors 16/32/64/128). These modes are controlled via PWD pin or software bit, and preserve register and memory state - enabling rapid resumption of real-time tasks in portable medical or audio devices.

What are the memory configuration options for the ADSP-2188NKCAZ-320, and how is memory mapped?

The ADSP-2188NKCAZ-320 integrates 48K × 24-bit on-chip program RAM and 56K × 16-bit data RAM, both configurable as unified or split spaces. Program memory supports dual-purpose use (instructions + data), enabling simultaneous operand fetch from program and data memory. Memory mapping is fixed per ADSP-2100 architecture: program space (0x0000–0xBFFF), data space (0x0000–0xDFFF), with external expansion via 24-bit address bus in Full Memory Mode.