Analog Devices Inc. ADSP-2188NKCA-320

Overview

ADSP-2188NKCA-320 from Analog Devices is a 24-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), integrates 48K words × 24-bit program RAM and 56K words × 16-bit data RAM, and supports dual serial ports with hardware companding per CCITT G.711.

For engineers reviewing the ADSP-2188NKCA-320 datasheet, ADSP-2188NKCA-320 pinout, ADSP-2188NKCA-320 application, or ADSP-2188NKCA-320 equivalent, key selection criteria include on-chip memory configuration, 100-lead LQFP package compatibility, ICE-Port™ debug support, and boot-from-byte-memory capability via BDMA port.

Technical Context

The ADSP-2188NKCA-320 implements the ADSP-2100 base architecture with three independent computational units (ALU, MAC, shifter), two dedicated DAGs, and a zero-overhead 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 supports flexible system interfacing via 16-bit internal DMA port, byte-wide BDMA port (up to 4 MB addressable), programmable wait states, and glueless I/O memory space. Power management includes hardware/software-initiated power-down (200 CLKIN-cycle recovery), idle mode, and slow-idle with 16/32/64/128 clock divisors.

Key Specifications

Pinout & Package

ADSP-2188NKCA-320 is housed in a 100-lead LQFP package (14 mm × 14 mm, 0.5 mm pitch), pin-compatible with other ADSP-218xN series devices. 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-2188NKCA-320, ADSP-2189NKCA-320 offers identical packaging and software compatibility but less on-chip memory, while TMS320VC5402PGE provides higher peak MIPS but demands external peripherals and lacks integrated boot-from-EPROM capability.

Availability

ADSP-2188NKCA-320 is available at Aetrix Electronics and suitable for voice communications systems, industrial motor controllers, medical ultrasound beamformers, and test & measurement instrumentation requiring stable component supply and long-term obsolescence management.

Supply support for ADSP-2188NKCA-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, power, and connectivity applications.

The ADSP-218xN product line was designed to deliver cost-effective, low-power, single-chip DSP solutions for real-time embedded signal processing where deterministic latency, on-chip memory integration, and debug-in-system capability are critical.

FAQ

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

The ADSP-2188NKCA-320 operates at an instruction cycle time of 12.5 ns, delivering 80 MIPS sustained performance. This is achieved with a 40 MHz external clock input (CLKIN), which the internal circuitry doubles to generate the 80 MHz instruction clock. The device is rated for 1.8 V core supply and maintains this performance across its specified temperature and voltage ranges per the Rev. A datasheet.

Does the ADSP-2188NKCA-320 support automatic boot from external memory?

Yes, the ADSP-2188NKCA-320 supports automatic boot from byte-wide external memory such as EPROM via its Byte DMA (BDMA) port. When configured in Mode C = 0 and Mode A = 0 (Full Memory Mode), the device loads the first 32 program memory words from byte memory space before beginning execution. This eliminates the need for external boot ROM controllers or host initialization firmware.

What debug interface does the ADSP-2188NKCA-320 provide?

The ADSP-2188NKCA-320 features the ICE-Port™ emulator interface, a proprietary Analog Devices debug solution that enables non-intrusive, real-time in-circuit emulation and breakpoint debugging directly in the final target system. Unlike JTAG, ICE-Port requires no dedicated pins and operates over standard I/O lines, preserving pin count for application use.

How much on-chip RAM does the ADSP-2188NKCA-320 integrate, and how is it allocated?

The ADSP-2188NKCA-320 integrates up to 256 KB of on-chip SRAM, configured as 48K words × 24-bit program memory RAM and 56K words × 16-bit data memory RAM. This allocation supports large filter coefficient tables, real-time buffers, and complex algorithm code in a single-chip solution without external memory bottlenecks.

Is the ADSP-2188NKCA-320 pin-compatible with other ADSP-218xN series devices?

Yes, the ADSP-2188NKCA-320 is fully pin-compatible with all members of the ADSP-218xN series, including ADSP-2184N through ADSP-2189N. All share the same 100-lead LQFP and 144-ball BGA packages, identical pin functions, and memory-mapped peripheral registers - enabling hardware scalability solely by selecting different memory configurations.