Analog Devices Inc. ADSP-2115BP-100

Overview

ADSP-2115BP-100 from Analog Devices is a 16-bit fixed-point DSP microprocessor with 1K × 16-bit on-chip data RAM, 1K × 16-bit on-chip program RAM, and dual synchronous serial ports (SPORT0 and SPORT1). It executes instructions at 25 MHz (40 ns cycle time), supports zero-overhead looping and automatic booting from byte-wide EPROM, and targets real-time audio, telecom, and industrial control signal processing.

For engineers reviewing the ADSP-2115BP-100 datasheet, ADSP-2115BP-100 pinout, ADSP-2115BP-100 application, or ADSP-2115BP-100 equivalent, key selection criteria include its 25 MIPS throughput, dual-data-address-generator architecture with modulo/bit-reverse addressing, 3 external interrupt inputs, low-power IDLE instruction, and support for multichannel TDM via SPORT0 - all in an 80-lead TQFP package rated for industrial temperature range (–40°C to +85°C).

Technical Context

The ADSP-2115BP-100 implements an enhanced Harvard architecture with three independent internal buses: Program Memory Address (PMA), Program Memory Data (PMD), and Data Memory Data (DMD), enabling simultaneous instruction fetch and dual operand access. Its ALU, multiplier/accumulator (MAC), and shifter operate in parallel with single-cycle instruction execution.

It features two dedicated data address generators (DAGs) supporting circular buffering, bit-reverse addressing for FFT, and automatic serial port autobuffering. The processor lacks a host interface port (unlike ADSP-2111) but includes a programmable 16-bit interval timer and edge-/level-sensitive IRQ0–IRQ2 inputs with vectored, nestable interrupt handling.

Key Specifications

Pinout & Package

ADSP-2115BP-100 is housed in an 80-lead Thin Quad Flat Package (TQFP) with 0.5 mm lead pitch, JEDEC MS-026 compliant, and rated for industrial temperature range (–40°C to +85°C). Pinout follows standard ADSP-21xx 80-lead TQFP configuration as documented in Analog Devices datasheet Rev. C, pages 53 and 7–8.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-2115BP-100, ADSP-2115ST-100 offers identical functionality in a different package with minor thermal trade-offs, while ADSP-2105KP-133 sacrifices speed, memory, and SPORT0 to reduce cost - making it a lower-tier alternative rather than a direct substitute.

Availability

ADSP-2115BP-100 is available at Aetrix Electronics and suitable for industrial motor control, telecom line card design, voice codec development, and audio effects processing requiring stable component supply across extended lifecycle programs.

Supply support for ADSP-2115BP-100 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 digital signal processing semiconductors, headquartered in Norwood, MA.

The ADSP-2100 Family - including ADSP-2115BP-100 - was engineered for real-time embedded DSP applications demanding deterministic low-latency execution, on-chip memory efficiency, and flexible serial interfacing in industrial, telecom, and audio systems.

FAQ

What is the maximum clock frequency supported by the ADSP-2115BP-100?

The ADSP-2115BP-100 operates at a maximum clock frequency of 25 MHz, corresponding to a 40 ns instruction cycle time. This rating is validated across the full industrial temperature range (–40°C to +85°C) and is specified in the Analog Devices ADSP-2100 Family datasheet Rev. C, page 17. Exceeding this frequency risks timing violations in the ALU, MAC, and memory interfaces of the ADSP-2115BP-100.

Does the ADSP-2115BP-100 include a host interface port (HIP)?

No, the ADSP-2115BP-100 does not include a host interface port. The HIP is exclusive to the ADSP-2111 variant within the ADSP-2100 Family. The ADSP-2115BP-100 provides dual serial ports (SPORT0 and SPORT1), a programmable timer, and three external interrupt inputs - but no parallel host bus interface. This distinction is clearly stated in Table I of the ADSP-2100 Family datasheet.

What memory configuration does the ADSP-2115BP-100 provide on-chip?

The ADSP-2115BP-100 integrates 1K × 16-bit (2048 words) of on-chip data RAM and 1K × 16-bit (2048 words) of on-chip program RAM. This configuration supports autonomous operation for compact algorithms without external memory. The memory map allocates distinct address spaces for program and data, with up to 14.5K words of data memory and 15K words of program memory accessible externally via the ADSP-2115BP-100's bus interface.

Can the ADSP-2115BP-100 execute code from external memory?

Yes, the ADSP-2115BP-100 supports external program memory expansion using its multiplexed address/data bus and memory space select signals (BMS, PMS, DMS). While it boots automatically from byte-wide external EPROM into on-chip program RAM, it can also execute directly from external memory by configuring the BMODE pin and using appropriate wait-state generation - as detailed in the "Program Memory Interface" section (page 10) of the ADSP-2115BP-100 datasheet.

Is the ADSP-2115BP-100 pin-compatible with other ADSP-21xx processors in the same package?

Yes, the ADSP-2115BP-100 in 80-lead TQFP shares identical pinout and electrical characteristics with other ADSP-21xx devices offered in that package - specifically ADSP-2101, ADSP-2103, and ADSP-2115 variants. Pin definitions, signal timing, and DC specifications are fully aligned per Analog Devices' ADSP-2100 Family datasheet Rev. C, page 53. However, functional differences (e.g., presence of SPORT0, memory size) mean firmware and system design are not interchangeable without verification.