Analog Devices Inc. ADSP-21478BCPZ-1A

Overview

ADSP-21478BCPZ-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 factory-programmed ROM containing Dolby/DTS audio decoders. It integrates dual SIMD computational units (PEx/PEy), eight serial ports (SPORTs), S/PDIF transceiver, four asynchronous sample rate converters (ASRCs), and digital applications interface (DAI) with precision clock generators.

For engineers reviewing the ADSP-21478BCPZ-1A datasheet, ADSP-21478BCPZ-1A pinout, ADSP-21478BCPZ-1A application, or ADSP-21478BCPZ-1A equivalent, this processor delivers deterministic real-time audio signal processing with IEEE 32-bit/40-bit floating-point arithmetic, VISA instruction compression, and AEC-Q100 qualification for automotive infotainment systems.

Technical Context

The ADSP-21478BCPZ-1A implements a dual-processing-element SIMD core with independent ALU, multiplier, and shifter in each unit, enabling parallel execution of identical instructions on distinct data streams. Its enhanced Harvard architecture supports simultaneous 64-bit PM/DM bus transfers and includes an instruction cache that eliminates fetch conflicts during looped operations like FIR filters and FFT butterflies.

Peripherally, it features two clock domains: a 300 MHz core domain hosting PEx/PEy, DAG1/DAG2, and JTAG debug; and an I/O processor domain with DAI/DPI routing, S/PDIF Tx/Rx, PCG, ASRCs, and SPORTs 0–7. The 88-lead LFCSP_VQ package excludes external port (SDRAM/AMI) pins per Table 2 footnote 1.

Key Specifications

Pinout & Package

ADSP-21478BCPZ-1A uses an 88-lead LFCSP_VQ package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad for thermal dissipation in high-clock audio applications. This package omits external port (SDRAM/AMI) pins per datasheet Table 2 footnote 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADSP-21478BCPZ-1A, the ADSP-21479BCPZ-3A adds SDRAM support and automotive safety peripherals at the cost of larger BGA packaging, while ADSP-21477BCPZ-2A reduces cost and features but sacrifices audio-specific capabilities essential for professional or automotive use.

Availability

ADSP-21478BCPZ-1A is available at Aetrix Electronics and suitable for professional audio mixing consoles, automotive infotainment head units, and high-end home theater receivers requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant silicon.

Supply support for ADSP-21478BCPZ-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, with design centers worldwide and over 50 years of signal processing innovation.

The SHARC® processor family, including ADSP-21478BCPZ-1A, was designed specifically for computationally intensive, low-latency audio signal processing in professional, automotive, and consumer applications demanding IEEE floating-point precision and deterministic real-time behavior.

FAQ

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

The ADSP-21478BCPZ-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 FFTs in under 31 μs and FIR filtering at 1.66 ns per tap.

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

Yes, the ADSP-21478BCPZ-1A includes 4 Mbits of factory-programmed ROM containing licensed Dolby Digital, DTS, and MPEG audio decoders. These decoders are pre-verified for bit-exact compliance and eliminate the need for external licensing, software integration, or host CPU offload in audio system designs.

Which package does the ADSP-21478BCPZ-1A use, and what are its key mechanical properties?

The ADSP-21478BCPZ-1A uses an 88-lead LFCSP_VQ package measuring 12 mm × 12 mm with 0.5 mm pitch and an exposed thermal pad. This thermally enhanced封装 supports high-power audio processing and excludes external port (SDRAM/AMI) pins per datasheet Table 2 footnote 1.

How many serial ports (SPORTs) does the ADSP-21478BCPZ-1A support, and what protocols are compatible?

The ADSP-21478BCPZ-1A supports eight full-duplex synchronous serial ports (SPORT0–SPORT7). Each SPORT supports I²S, left-justified, right-justified, TDM, and custom frame formats with programmable word length (8–32 bits), sample rate, and clock polarity - ideal for multi-channel ADC/DAC interfacing in professional audio gear.

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

Yes, the ADSP-21478BCPZ-1A is AEC-Q100 qualified for Grade 3 (−40°C to +85°C) operation. It undergoes extended reliability testing including HTOL, TC, and ESD validation, making it suitable for deployment in automotive infotainment ECUs, digital signal processors, and active noise cancellation modules without additional qualification effort.