Analog Devices Inc. ADSP-21479BSWZ-2A

Overview

ADSP-21479BSWZ-2A from Analog Devices is a 32-bit/40-bit floating-point SHARC® DSP optimized for high-performance audio processing, operating at up to 300 MHz with 5 Mbits of on-chip SRAM and 4 Mbits of ROM. It integrates dual SIMD computational units (PEx/PEy), eight serial ports (SPORTs), an S/PDIF transceiver, four asynchronous sample rate converters (ASRCs), and digital applications interface (DAI) routing. It serves as the core processor in professional audio mixing consoles and automotive infotainment head units requiring real-time FIR/IIR filtering and multichannel audio decoding.

For engineers reviewing the ADSP-21479BSWZ-2A datasheet, ADSP-21479BSWZ-2A pinout, ADSP-21479BSWZ-2A application, or ADSP-21479BSWZ-2A equivalent, key selection criteria include its 300 MHz core clock, 5 Mbit on-chip RAM capacity, AEC-Q100 qualification, 196-ball CSP_BGA package with SDRAM controller support, and factory-programmed Dolby/DTS decoder ROM compatibility.

Technical Context

The ADSP-21479BSWZ-2A implements a dual-processing-element SIMD architecture where PEx executes all instructions and PEy operates conditionally under MODE1.PEYEN control, enabling parallel ALU/multiplier/shifter operations on independent data streams. Its enhanced Harvard architecture sustains simultaneous 64-bit PM/DM bus transfers and 32-bit IOD0/IOD1 peripheral DMA, with instruction cache selectively caching conflict-prone fetches to maintain full-speed loop execution.

It features two independent clock domains: a 300 MHz core domain hosting the SIMD engine, JTAG debug port, and thermal diode; and a peripheral domain supporting precision clock generators (PCG), S/PDIF Tx/Rx, ASRCs, and DAI/DPI signal routing. The 196-ball CSP_BGA package enables full external port functionality including SDRAM controller (62M words Bank 0, 64M words Banks 1–3) and AMI interface - unavailable in 88-LFCSP_VQ or 100-LQFP variants.

Key Specifications

Pinout & Package

ADSP-21479BSWZ-2A uses a 196-ball CSP_BGA package (12 mm × 12 mm, 0.8 mm pitch) with exposed thermal pad. This package supports full external port functionality including SDRAM controller, AMI interface, and all 20 DAI/DPI routing pins - unlike 88-LFCSP_VQ or 100-LQFP variants which disable external port pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance audio DSP applications.

Compared with ADSP-21478BSWZ-2A, the ADSP-21479BSWZ-2A delivers 50% higher clock speed and 67% more on-chip memory for complex audio stacks, while ADSP-21569KCPZ-4A trades mature audio peripherals for raw compute and modern memory interfaces - making ADSP-21479BSWZ-2A optimal for drop-in upgrades of existing SHARC-based audio platforms.

Availability

ADSP-21479BSWZ-2A is available at Aetrix Electronics and suitable for professional audio equipment, automotive infotainment systems, and medical ultrasound devices requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant silicon.

Supply support for ADSP-21479BSWZ-2A 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 Wilmington, MA, with design centers worldwide and a 50+ year heritage in precision signal processing.

The ADSP-21479BSWZ-2A belongs to the SHARC® family of SIMD floating-point DSPs, engineered specifically for deterministic, low-latency audio processing in professional, automotive, and industrial systems where computational throughput and peripheral integration are critical.

FAQ

What is the maximum operating frequency of the ADSP-21479BSWZ-2A?

The ADSP-21479BSWZ-2A operates at a maximum core frequency of 300 MHz, delivering 1.8 GFLOPS peak performance. This frequency is guaranteed across the full industrial temperature range (−40°C to +85°C) and enables sub-31 μs execution of 1024-point complex FFTs. The 300 MHz rating applies specifically to the ADSP-21479BSWZ-2A variant in the 196-ball CSP_BGA package.

Does the ADSP-21479BSWZ-2A include factory-programmed audio codecs?

Yes, the ADSP-21479BSWZ-2A includes 4 Mbits of on-chip ROM preloaded with licensed Dolby and DTS audio decoders, enabling immediate compliance with broadcast and consumer electronics audio standards without external firmware loading. This ROM is accessible only in secure boot mode and cannot be overwritten or read externally due to hardware-enforced protection.

Which package types support the external port interface on the ADSP-21479BSWZ-2A?

Only the 196-ball CSP_BGA package (as used in ADSP-21479BSWZ-2A) supports the full external port interface, including SDRAM controller and asynchronous memory interface (AMI). The 88-LFCSP_VQ and 100-LQFP packages disable external port pins entirely, as confirmed in Table 2 footnote 1 of the ADSP-2147x datasheet Rev. E.

Is the ADSP-21479BSWZ-2A qualified for automotive applications?

Yes, the ADSP-21479BSWZ-2A is AEC-Q100 qualified for automotive applications (Grade 3, −40°C to +85°C). This qualification covers the full device - including core, peripherals, and thermal diode - and is documented in the Automotive Products section (page 73) of the ADSP-2147x datasheet Rev. E.

What peripheral interfaces are available for digital audio connectivity on the ADSP-21479BSWZ-2A?

The ADSP-21479BSWZ-2A provides dedicated digital audio interfaces including one S/PDIF transceiver (Tx/Rx), eight serial ports (SPORTs) supporting I²S/TDM/PCM, four asynchronous sample rate converters (ASRCs), and a digital applications interface (DAI) with 20 configurable pins for PCG, IDP/PDAP, and signal routing - all accessible in the 196-ball CSP_BGA package.