Analog Devices Inc. ADSP-2183KST-160

Overview

ADSP-2183KST-160 from Analog Devices is a 16-bit fixed-point DSP microcomputer optimized for real-time digital signal processing, featuring a 19 ns instruction cycle time (26.32 MHz), 52 MIPS sustained performance, 16K × 24-bit on-chip program RAM, 16K × 16-bit on-chip data RAM, and dual synchronous serial ports (SPORT0/SPORT1) with hardware companding. It targets audio processing, telecom channel banks, and portable instrumentation.

For engineers reviewing the ADSP-2183KST-160 datasheet, ADSP-2183KST-160 pinout, ADSP-2183KST-160 application, or ADSP-2183KST-160 equivalent, key selection criteria include on-chip memory configuration, serial port framing flexibility, power-down recovery timing (300 CLKIN cycles), IDMA port bandwidth, and ICE-Port™ emulator compatibility for in-system debug.

Technical Context

The ADSP-2183KST-160 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 supporting conditional execution and nested loops. Its 3-bus architecture enables simultaneous dual operand fetches per instruction cycle.

It integrates a 16-bit internal DMA (IDMA) port for direct access to on-chip RAM, an 8-bit byte DMA (BDMA) port addressing up to 4 MB of external byte memory, and two double-buffered serial ports with programmable clock generation, frame sync, and A-law/μ-law companding per CCITT G.711 - all operating concurrently with core computation.

Key Specifications

Pinout & Package

ADSP-2183KST-160 is housed in a 128-lead LQFP (Lead Pitch: 0.4 mm, Body Size: 14 mm × 14 mm) with exposed thermal pad. Pin functions are validated per Analog Devices ADSP-2183 Rev. C datasheet, Table "Pin Descriptions".

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-2183KST-160, ADSP-2189MSTZ-160 offers greater processing headroom and audio integration but sacrifices byte-memory boot flexibility, while TMS320C549PGE delivers higher peak performance at the cost of significantly higher static power and no native low-power modes - making ADSP-2183KST-160 optimal for portable, battery-sensitive DSP tasks requiring balanced performance and power efficiency.

Availability

ADSP-2183KST-160 is available at Aetrix Electronics and suitable for audio signal processing, telecom channel bank design, and industrial motor control applications requiring stable component supply across extended production lifecycles.

Supply support for ADSP-2183KST-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 is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision, power, and connectivity applications.

The ADSP-21xx family was designed for real-time embedded DSP tasks where deterministic low-latency execution, on-chip memory integration, and power-aware operation are critical - targeting portable, telecom, and industrial control systems.

FAQ

What is the maximum external memory capacity supported by the ADSP-2183KST-160 for program overlays?

The ADSP-2183KST-160 supports two 8K-word external program memory overlays via the PMOVLAY register, accessible in the 0x2000–0x3FFF address range using standard 14-bit addressing. This allows swapping code segments without modifying the core instruction stream, enabling modular firmware updates. The ADSP-2183KST-160 does not support dynamic overlay switching during active loop execution - overlay register changes must occur outside critical timing paths to prevent incorrect pointer behavior.

Does the ADSP-2183KST-160 support hardware floating-point arithmetic?

No, the ADSP-2183KST-160 is a fixed-point DSP with 16-bit data paths and 40-bit accumulator precision. It performs arithmetic using 2's complement integer representation only; floating-point operations require software emulation or external coprocessor. The ADSP-2183KST-160's ALU, MAC, and shifter are all optimized for fixed-point math - including biased rounding and result-free ALU operations - but contain no dedicated floating-point units or IEEE-754 compliant circuitry.

How does the ADSP-2183KST-160 handle interrupt nesting and priority resolution?

Interrupts in the ADSP-2183KST-160 are prioritized in hardware with fixed vector addresses (e.g., Reset = 0x0000, Power-Down = 0x002C). Up to 11 interrupts are maskable via the IMASK register, while Power-Down and Reset are nonmaskable. Nested servicing is enabled by default: higher-priority unmasked interrupts preempt lower-priority handlers. The ADSP-2183KST-160 uses 12-level on-chip stacks to preserve context automatically during nested interrupts, subroutine calls, and loops - eliminating manual stack management overhead.

Can the ADSP-2183KST-160's SPORT0 operate in multichannel TDM mode while SPORT1 handles general-purpose I/O?

Yes - SPORT0 supports 24- or 32-word time-division multiplexed (TDM) bitstream reception/transmission, while SPORT1 can be reconfigured to provide two external IRQs (IRQ0/IRQ1), FLAG_IN, and FLAG_OUT instead of serial functionality. This dual-role capability allows the ADSP-2183KST-160 to simultaneously manage high-bandwidth TDM audio traffic and discrete system signaling - such as interrupt-driven sensor events or status flags - without consuming additional GPIO resources or requiring external logic.

What are the valid clock source configurations for the ADSP-2183KST-160, and how does it affect instruction timing?

The ADSP-2183KST-160 accepts either a 26.32 MHz crystal across CLKIN/XTAL or a 13.16 MHz TTL-compatible clock on CLKIN only (XTAL left unconnected). In both cases, the internal oscillator divides the input to generate a 52.64 MHz phase-locked internal clock, yielding a 19 ns instruction cycle. CLKOUT reflects this internal rate and may be disabled via the SPORT0 Autobuffer Control Register. Deviating from these frequencies violates timing specifications and risks metastability in address/data latching.