Analog Devices Inc. ADSP-2115BP-80

Overview

ADSP-2115BP-80 from Analog Devices is a 16-bit fixed-point DSP microprocessor with 1 KB on-chip data RAM, 1 KB on-chip program RAM, dual serial ports (SPORT0 and SPORT1), and 25 MIPS performance at 25 MHz (40 ns instruction cycle). It implements an enhanced Harvard architecture with independent ALU, MAC, and shifter units, and supports zero-overhead looping for real-time audio and telecom signal processing.

For engineers reviewing the ADSP-2115BP-80 datasheet, ADSP-2115BP-80 pinout, ADSP-2115BP-80 application, or ADSP-2115BP-80 equivalent, key selection criteria include on-chip memory size, serial port count and multichannel capability, interrupt latency, boot flexibility from byte-wide EPROM, and compatibility with ADSP-2100 Family development tools including EZ-Kit Lite and EZ-ICE.

Technical Context

The ADSP-2115BP-80 executes all instructions in a single cycle using three internal buses: Program Memory Address (PMA), Program Memory Data (PMD), and Data Memory Data (DMD). Its dual data address generators (DAGs) support modulo and bit-reverse addressing for efficient FFT and filter operations.

It features automatic booting from external byte-wide EPROM, double-buffered serial ports with hardware A-law/µ-law companding per CCITT G.711, and three edge- or level-sensitive interrupts (IRQ0–IRQ2), with IRQ2 dedicated and IRQ0/IRQ1 multiplexed with SPORT1 pins.

Key Specifications

Pinout & Package

ADSP-2115BP-80 is housed in an 80-lead TQFP package (12 mm × 12 mm, 0.65 mm pitch), specified per Analog Devices' package outline drawing P-80-3. Pin functions are defined for ADSP-2115 across PLCC, PQFP, and TQFP variants with identical signal mapping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-2115BP-80, ADSP-2101KP-80 trades multichannel serial capability for +1 KB program RAM in PGA form, while ADSP-2111KP-133 adds host interface functionality at identical speed and memory depth - making it optimal for master/slave system partitioning.

Availability

ADSP-2115BP-80 is available at Aetrix Electronics and suitable for voice codec systems, telecom line cards, motor control modules, and audio effects processors requiring stable component supply and long-term industrial temperature support.

Supply support for ADSP-2115BP-80 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 company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.

The ADSP-2100 Family, including ADSP-2115BP-80, was designed for cost-sensitive, real-time embedded DSP applications demanding deterministic low-latency execution, on-chip memory efficiency, and flexible serial interfacing - particularly in voice, telecom, and motor control domains.

FAQ

What is the maximum operating frequency and instruction cycle time for the ADSP-2115BP-80?

The ADSP-2115BP-80 operates at a maximum frequency of 25 MHz, delivering a 40 ns instruction cycle time. This allows every instruction-including multiply-accumulate, data move, and address update-to execute in a single cycle. The part achieves 25 MIPS throughput, verified under recommended operating conditions (5 V ±10%, –40°C to +85°C), and is rated for this speed in its 80-lead TQFP package per Analog Devices' ADSP-2115 datasheet Rev. C.

Does the ADSP-2115BP-80 support multichannel TDM operation, and if so, on which serial port?

Yes, the ADSP-2115BP-80 supports multichannel TDM operation exclusively on SPORT0, enabling 24-word or 32-word time-division multiplexed serial streams. This feature is used in CEPT/E1 and T1 line interfaces. SPORT1 does not support multichannel mode but provides full-duplex synchronous communication with independent framing and companding. The ADSP-2115BP-80's SPORT0 implementation matches the functional description in Table I and Figure 1 of the ADSP-2100 Family datasheet.

What boot methods are supported by the ADSP-2115BP-80, and what external memory types are compatible?

The ADSP-2115BP-80 supports automatic booting from byte-wide external memory such as EPROM, with built-in 3-wait-state generation at reset. It is compatible with standard 200 ns EPROM devices without additional wait-state logic. Boot configuration is controlled by the BMODE pin, and the device loads program code into its on-chip 1 KB program RAM before execution begins. No host interface boot is supported - that capability is exclusive to the ADSP-2111 variant.

How much on-chip memory does the ADSP-2115BP-80 integrate, and what is its organization?

The ADSP-2115BP-80 integrates 1 KB (512 words × 16-bit) of on-chip data RAM and 1 KB (512 words × 16-bit) of on-chip program RAM. Both memories are SRAM-based, fully static, and accessible in a single cycle. This memory map is fixed and documented in the ADSP-2115 section of the ADSP-2100 Family datasheet, distinguishing it from the ADSP-2101 (2 KB program RAM) and ADSP-2105 (512-word program RAM).

Is the ADSP-2115BP-80 pin-compatible with other ADSP-2100 Family members, and which packages share identical pinouts?

The ADSP-2115BP-80 in 80-lead TQFP shares identical pinout and signal definitions with the 80-lead PQFP variant of ADSP-2115, as confirmed in the "PIN CONFIGURATIONS" section (page 53) of the datasheet. It is not pin-compatible with 68-pin PGA or PLCC packages (used by ADSP-2101/2103/2105), nor with the 100-pin packages of ADSP-2111. Signal mapping across ADSP-2115 variants is consistent, but mechanical footprint and thermal characteristics differ between TQFP and PQFP.