Analog Devices Inc. ADSP-21478KBCZ-1A

Overview

ADSP-21478KBCZ-1A 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 3 Mbits of on-chip SRAM and 4 Mbits of ROM, supporting SIMD computation, VISA instruction set, and AEC-Q100 qualification for automotive infotainment systems.

For engineers reviewing the ADSP-21478KBCZ-1A datasheet, ADSP-21478KBCZ-1A pinout, ADSP-21478KBCZ-1A application, or ADSP-21478KBCZ-1A equivalent, this page delivers verified technical context, validated pin functions, confirmed peripheral capabilities (S/PDIF transceiver, ASRC, DAI/DPI), and real-world audio system integration guidance - all specific to the 88-lead LFCSP_VQ package variant.

Technical Context

The ADSP-21478KBCZ-1A implements a dual-processing-element SIMD core (PEx/PEy) with independent ALU, multiplier, shifter, and 16×40-bit register files per element, enabling simultaneous execution of identical instructions on distinct data streams. Its enhanced Harvard architecture supports single-cycle fetch of one 48-bit instruction and four 32-bit operands via PM/DM buses and instruction cache.

It features two clock domains: a 300 MHz core domain hosting FFT/FIR/IIR accelerators and a peripheral domain with precision clock generators (PCG), S/PDIF Tx/Rx, four asynchronous sample rate converters (ASRC), eight serial ports (SPORT), and digital applications interface (DAI) routing. The 88-LFCSP_VQ package excludes external port (SDRAM/AMI) pins but retains full DAI/DPI functionality including IDP/PDAP, SPI, TWI, UART, and PWM.

Key Specifications

Pinout & Package

ADSP-21478KBCZ-1A is housed in an 88-lead LFCSP_VQ (Lead Frame Chip Scale Package, Very Thin Quad) measuring 12 mm × 12 mm with 0.5 mm pitch and exposed thermal pad. This package omits external port (SDRAM/AMI) pins but fully supports all DAI/DPI peripherals, JTAG debug, and power/ground distribution optimized for low-inductance audio signal integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21478KBCZ-1A, the ADSP-21479KCPZ-3A adds SDRAM support and automotive Grade 2 capability but requires PCB redesign, while the ADSP-21477KCPZ-2A sacrifices ROM-based security and audio acceleration for lower BOM cost and simpler thermal management.

Availability

ADSP-21478KBCZ-1A is available at Aetrix Electronics and suitable for automotive infotainment systems, professional audio mixers, high-end AV receivers, and medical ultrasound beamformers requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant silicon.

Supply support for ADSP-21478KBCZ-1A 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, serving industrial, automotive, communications, and healthcare markets since 1965.

The SHARC® processor family - including ADSP-21478KBCZ-1A - was designed specifically for computationally intensive, low-latency audio signal processing in automotive, professional, and consumer systems demanding deterministic real-time performance and hardware-accelerated audio peripherals.

FAQ

What is the maximum operating frequency of the ADSP-21478KBCZ-1A?

The ADSP-21478KBCZ-1A operates at up to 300 MHz, delivering 1.8 GFLOPS peak performance in SIMD mode. This frequency is guaranteed across the industrial temperature range (−40°C to +85°C) and enables real-time execution of complex audio algorithms such as 1024-point FFT in 30.59 μs. The 300 MHz rating applies specifically to the KBCZ-1A speed grade and is validated per Analog Devices' Rev. E datasheet specifications.

Does the ADSP-21478KBCZ-1A include factory-programmed audio decoders?

Yes, the ADSP-21478KBCZ-1A includes 4 Mbits of on-chip ROM pre-programmed with licensed Dolby and DTS audio decoder firmware. This eliminates the need for external flash memory and simplifies system certification for automotive infotainment and premium home theater applications. The ROM is secured via hardware-based read protection and only executes boot code internally.

Which package does the ADSP-21478KBCZ-1A use, and what peripherals are supported?

The ADSP-21478KBCZ-1A uses an 88-lead LFCSP_VQ package (12 mm × 12 mm, 0.5 mm pitch). It supports full DAI/DPI functionality - including S/PDIF transceiver, 4× ASRC, 8× SPORT, IDP/PDAP, SPI, TWI, UART, and 3× PWM - but excludes external port (SDRAM/AMI) pins. Thermal diode and JTAG are fully functional in this package variant.

Is the ADSP-21478KBCZ-1A qualified for automotive applications?

Yes, the ADSP-21478KBCZ-1A is AEC-Q100 qualified for Grade 3 (−40°C to +85°C), making it suitable for automotive infotainment head units, digital radio receivers, and active noise cancellation modules. Its qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD - all documented in Analog Devices' automotive product compliance reports.

What distinguishes the ADSP-21478KBCZ-1A from the ADSP-21477 and ADSP-21479 variants?

The ADSP-21478KBCZ-1A uniquely combines 300 MHz operation, 3 Mbits SRAM, and 4 Mbits ROM in the 88-LFCSP_VQ package - a configuration not shared by ADSP-21477 (200 MHz, no ROM) or ADSP-21479 (300 MHz, 5 Mbits SRAM, 196-BGA only). It is the only SHARC variant offering factory audio decoders in a thermally efficient, space-saving LFCSP format.