Analog Devices Inc. ADSP-2183BST-115

Overview

ADSP-2183BST-115 from Analog Devices is a 16-bit fixed-point DSP microcomputer optimized for real-time digital signal processing in audio, telecom, and industrial control systems. It delivers 52 MIPS sustained performance at 26.32 MHz (19 ns instruction cycle), integrates 16K × 24-bit on-chip program RAM and 16K × 16-bit data RAM, and features dual serial ports (SPORT0/SPORT1), 16-bit internal DMA port, byte DMA controller, and programmable 16-bit interval timer.

For engineers reviewing the ADSP-2183BST-115 datasheet, ADSP-2183BST-115 pinout, ADSP-2183BST-115 application, or ADSP-2183BST-115 equivalent, key selection criteria include on-chip memory configuration (dual-port RAM), low-power operation modes (Power-Down with 300-cycle recovery), ICE-Port™ emulator support, and compatibility with ADSP-2100 family development tools including VisualDSP++ and EZ-KIT Lite.

Technical Context

The ADSP-2183BST-115 implements the ADSP-2100 base architecture with three independent computational units - ALU, MAC (40-bit accumulator), and barrel shifter - enabling parallel execution of address generation, data move, and computation in a single 19 ns cycle. Its dual DAGs support circular buffering and modulo addressing for efficient FFT and filter operations.

System interface includes dedicated buses: PMA/PMD for program memory, DMA/DMD for data memory, and R-bus interconnecting computational units. The 16-bit internal DMA port provides direct access to on-chip RAM, while the byte DMA port supports 4 MB external byte-wide memory (e.g., EPROM) with automatic booting capability and transparent overlay transfers.

Key Specifications

Pinout & Package

ADSP-2183BST-115 is packaged in a 128-lead LQFP (Low-Profile Quad Flat Package) with 0.4 mm lead pitch, compliant with JEDEC MO-152AC. Thermal pad exposed on bottom for enhanced heat dissipation in high-throughput DSP applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-2183BST-115, the ADSP-2189MSTZ-350 offers higher performance in the same family with minimal code changes, while the TMS320VC5402PGE represents a different architecture requiring full re-architecture - making ADSP-2183BST-115 optimal for cost-sensitive, low-power, and emulator-integrated embedded DSP designs.

Availability

ADSP-2183BST-115 is available at Aetrix Electronics and suitable for voice codec systems, industrial motor controllers, audio effects processors, and portable medical analyzers requiring stable component supply and long-term lifecycle support.

Supply support for ADSP-2183BST-115 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 leader in high-performance analog, mixed-signal, and DSP technology, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.

The ADSP-21xx family was engineered for real-time embedded signal processing in resource-constrained environments - emphasizing low-power operation, on-chip memory integration, and debug-friendly architecture for rapid prototyping and production deployment.

FAQ

What clock source options does the ADSP-2183BST-115 support?

The ADSP-2183BST-115 supports both crystal oscillator and external TTL-compatible clock inputs. When using a crystal, it connects across CLKIN and XTAL pins with load capacitors; for external clock, a 26.32 MHz signal is applied to CLKIN while XTAL remains unconnected. The internal oscillator circuit ensures stable 19 ns instruction timing regardless of source, and CLKOUT reflects the internal instruction rate for system synchronization.

Does the ADSP-2183BST-115 support in-circuit emulation without board modifications?

Yes, the ADSP-2183BST-115 integrates ICE-Port™ - a 14-pin dedicated emulator interface that enables full in-target debugging without removing the device or adding adapters. It supports breakpoints, register/memory inspection, instruction-level stepping, and C-source debugging directly on the final PCB, making ADSP-2183BST-115 ideal for validation of production-representative hardware.

How does the ADSP-2183BST-115 handle booting from external memory?

The ADSP-2183BST-115 supports automatic booting from byte-wide external memory (e.g., EPROM) via its Byte DMA port. Upon reset with BMODE = 1, it loads the first 16K words of program memory over the BDMA interface - enabling field-upgradable firmware without requiring external boot ROM logic or host intervention.

Can the ADSP-2183BST-115 execute code from program memory while simultaneously accessing data from the same memory space?

Yes, the ADSP-2183BST-115's dual-bus architecture allows concurrent instruction fetch and data read from program memory in a single cycle. Its 24-bit program memory is dual-purpose: storing both opcodes and constants/tables. This capability enables efficient implementation of coefficient-driven algorithms like FIR filters where coefficients reside alongside instructions.

What low-power modes are available on the ADSP-2183BST-115 and how fast is wake-up from each?

The ADSP-2183BST-115 offers three low-power modes: Power-Down (300 CLKIN cycles wake-up), Idle (immediate wake-up on interrupt), and Slow Idle (IDLE(n) with 16/32/64/128-cycle latency). Power-Down achieves lowest current draw and is triggered by PWD pin or software command; all modes preserve register and memory state, ensuring deterministic resumption of ADSP-2183BST-115 execution.