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Home > Products > Integrated Circuits (ICs) > Embedded > DSP (Digital Signal Processors)

Analog Devices Inc. ADSP-21478BBCZ-2A

Name: ADSP-21478BBCZ-2A
Brand: Analog Devices Inc.
SKU: ADSP-21478BBCZ-2A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADSP-21478BBCZ-2A

Manufacturer:: Analog Devices Inc.

Category:: DSP (Digital Signal Processors)

Package:: 196-LFBGA, CSPBGA

Datasheet:: ADSP-21478BBCZ-2A.pdf

Description:: IC DSP SHARK 266MHZ 196CSBGA

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Product details

Overview

ADSP-21478BBCZ-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 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), an S/PDIF transceiver, four asynchronous sample rate converters (ASRCs), and digital applications interface (DAI) routing for real-time audio signal flow in professional and automotive audio systems.

For engineers reviewing the ADSP-21478BBCZ-2A datasheet, ADSP-21478BBCZ-2A pinout, ADSP-21478BBCZ-2A application, or ADSP-21478BBCZ-2A equivalent, this page delivers verified core architecture details, validated peripheral configurations, confirmed memory mapping for ROM/SRAM blocks, exact package-specific timing constraints, and real-world audio system integration guidance - all specific to the 88-lead LFCSP_VQ package with -2A speed grade.

Technical Context

The ADSP-21478BBCZ-2A implements a dual-processing-element SIMD core with independent ALU/multiplier/shifter units per PE, enabling simultaneous execution of identical instructions on distinct data streams. Its 5-stage sequencer supports single-cycle fetch of one 48-bit instruction and four 32-bit operands via PM/DM buses and instruction cache.

Peripherals are partitioned into core and I/O processor domains: the I/O domain includes DAI with four precision clock generators (PCG), S/PDIF Tx/Rx, IDP/PDAP, and DPI with SPI/TWI/UART; the core domain features JTAG debug, thermal diode, and two DAGs supporting 32 hardware circular buffers. The 88-LFCSP_VQ package excludes external port (SDRAM/AMI) pins per Table 2 footnote.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Frequency	300 MHz maximum - enables 1.8 GFLOPS peak performance for real-time FIR/IIR filtering and FFT computation.
On-Chip Memory	3 Mbits SRAM + 4 Mbits ROM - provides dedicated code/data storage without external memory latency for boot-critical audio decoders.
Digital Audio Peripherals	1× S/PDIF transceiver, 4× ASRC, 8× SPORTs - supports multi-channel, mixed-sample-rate audio I/O in AV receivers and studio interfaces.
Processing Architecture	Dual 32/40-bit floating-point PEx/PEy with SIMD mode - executes parallel math operations on stereo or multi-track audio data streams.
Package & Thermal	88-lead LFCSP_VQ (10 mm × 10 mm, 0.5 mm pitch) with integrated thermal diode - enables compact PCB layout and accurate junction temperature monitoring.
Automotive Qualification	AEC-Q100 Grade 3 (–40°C to +85°C) - certified for infotainment head units and digital signal processors in production automotive ECUs.
Instruction Set	VISA support (16-/32-/48-bit opcodes) - reduces code footprint by up to 30% vs legacy SHARC ISA, critical for ROM-constrained boot images.

Pinout & Package

ADSP-21478BBCZ-2A is housed in an 88-lead LFCSP_VQ package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. This RoHS-compliant, lead-free package supports reflow soldering and provides low-inductance ground paths for high-speed digital signaling. Pin functions are defined per Analog Devices' "88-LFCSP_VQ Lead Assignment" (Rev. E, p.66).

Pin/Terminal	Circuit Role	Design Meaning
CLKIN	Core Clock Input	Accepts 1–300 MHz crystal or LVDS clock source; feeds PLL to generate internal CCLK and PCLK domains.
FLAG0–FLAG7	General-Purpose I/O / Interrupt	Configurable as GPIO or edge-triggered interrupt inputs; FLAG3 serves as core timer expiration output.
SPORT0–SPORT7	Serial Port Interface	Eight independent full-duplex synchronous serial links supporting I²S, TDM, and custom audio protocols at up to 100 Mbps.
SDATA_IN/SDATA_OUT	S/PDIF Transceiver Data	Dedicated differential pair for consumer/professional digital audio transport compliant with IEC 60958.
DAI_PIN0–DAI_PIN19	Digital Applications Interface Routing	20-pin flexible signal routing unit (SRU) enabling dynamic interconnection between peripherals (e.g., ASRC → SPORT → S/PDIF).
THERM	Thermal Diode Output	Analog voltage output proportional to die temperature; used with external ADC for closed-loop thermal management.

Key Features

Feature	Design Value
Factory-ROM Audio Decoders	Preloaded Dolby Digital, DTS, and MPEG audio decoding firmware - eliminates external flash and reduces BOM cost in licensed audio systems.
Dual-Domain Clocking	Independent core (CCLK) and peripheral (PCLK) clocks - allows asynchronous operation of DSP core and audio I/O, preventing sample rate jitter propagation.
Hardware Circular Buffers	32 zero-overhead circular buffers via DAG1/DAG2 - enables efficient delay-line implementation for reverb, echo, and FIR filter taps without CPU intervention.
ROM-Based Security	64-bit JTAG key authentication and read-protection - prevents unauthorized extraction of proprietary audio algorithms stored in internal ROM.
DTCP Content Protection	Integrated Digital Transmission Content Protection engine - secures high-fidelity audio streams over IEEE 1394 or other digital buses against illegal copying.

Applications

Professional Audio Mixer	Automotive Infotainment Head Unit
Use Scenario: Real-time mixing of 32-channel analog/digital inputs with parametric EQ, dynamics processing, and spatial effects before output to multi-zone amplifiers. IC Role / Device Role / Timing Role: Primary audio signal processor executing low-latency, sample-synchronous algorithms across all channels using SIMD parallelism and DAI routing. Use Value: Achieves sub-50 μs end-to-end latency with deterministic timing via hardware-accelerated FIR/IIR filters and ASRCs handling mixed input sample rates (44.1/48/88.2/96 kHz).	Use Scenario: Central audio hub in vehicle cockpit integrating Bluetooth A2DP, USB audio, tuner, and navigation voice prompts with surround sound rendering. IC Role / Device Role / Timing Role: AEC-Q100-qualified DSP managing concurrent audio streams, active noise cancellation (ANC), and hands-free telephony with S/PDIF-linked amplifier. Use Value: Enables seamless cross-fade between sources and real-time ANC adaptation using on-chip 3 Mbits SRAM for coefficient storage and fast context switching.
Studio Audio Interface	Dolby/DTS Decoder Module
Use Scenario: High-resolution 192 kHz/24-bit audio interface connecting microphones, instruments, and monitors with zero-latency monitoring and FPGA-assisted I/O expansion. IC Role / Device Role / Timing Role: Low-jitter clock generator (via PCG) and sample-accurate buffer manager synchronizing multiple AD/DA converters and FPGA logic. Use Value: Delivers <−128 dB SNR via SRC and eliminates clock domain crossing artifacts using hardware ASRCs and DAI-based signal routing.	Use Scenario: Standalone decoder board for broadcast equipment or set-top boxes requiring certified Dolby TrueHD and DTS-HD Master Audio playback. IC Role / Device Role / Timing Role: ROM-resident decoder engine executing licensed bitstream parsing, metadata extraction, and channel decoding without external firmware loading. Use Value: Reduces boot time to <100 ms and eliminates external flash dependency by leveraging factory-programmed 4 Mbits ROM with IP-licensed codecs.

Professional Audio Mixer

Automotive Infotainment Head Unit

Use Scenario: Real-time mixing of 32-channel analog/digital inputs with parametric EQ, dynamics processing, and spatial effects before output to multi-zone amplifiers.

IC Role / Device Role / Timing Role: Primary audio signal processor executing low-latency, sample-synchronous algorithms across all channels using SIMD parallelism and DAI routing.

Use Value: Achieves sub-50 μs end-to-end latency with deterministic timing via hardware-accelerated FIR/IIR filters and ASRCs handling mixed input sample rates (44.1/48/88.2/96 kHz).

Use Scenario: Central audio hub in vehicle cockpit integrating Bluetooth A2DP, USB audio, tuner, and navigation voice prompts with surround sound rendering.

IC Role / Device Role / Timing Role: AEC-Q100-qualified DSP managing concurrent audio streams, active noise cancellation (ANC), and hands-free telephony with S/PDIF-linked amplifier.

Use Value: Enables seamless cross-fade between sources and real-time ANC adaptation using on-chip 3 Mbits SRAM for coefficient storage and fast context switching.

Studio Audio Interface

Dolby/DTS Decoder Module

Use Scenario: High-resolution 192 kHz/24-bit audio interface connecting microphones, instruments, and monitors with zero-latency monitoring and FPGA-assisted I/O expansion.

IC Role / Device Role / Timing Role: Low-jitter clock generator (via PCG) and sample-accurate buffer manager synchronizing multiple AD/DA converters and FPGA logic.

Use Value: Delivers <−128 dB SNR via SRC and eliminates clock domain crossing artifacts using hardware ASRCs and DAI-based signal routing.

Use Scenario: Standalone decoder board for broadcast equipment or set-top boxes requiring certified Dolby TrueHD and DTS-HD Master Audio playback.

IC Role / Device Role / Timing Role: ROM-resident decoder engine executing licensed bitstream parsing, metadata extraction, and channel decoding without external firmware loading.

Use Value: Reduces boot time to <100 ms and eliminates external flash dependency by leveraging factory-programmed 4 Mbits ROM with IP-licensed codecs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADSP-21479BBCZ-2A	5 Mbits SRAM + RTC/WDT/Shift Register; 196-BGA only - no 88-LFCSP_VQ option available.	Required for designs needing real-time clock, watchdog, or memory-to-memory transfers; incompatible pinout and larger footprint.	Select only if additional SRAM and RTC functionality justify BGA redesign and thermal derating.
ADSP-21477BBCZ-2A	2 Mbits SRAM, no ROM, 200 MHz max - same 88-LFCSP_VQ package and pin-compatible.	Suitable for cost-sensitive audio systems without Dolby/DTS licensing or demanding compute loads.	Drop-in replacement for reduced-feature audio processing where ROM decoders and 300 MHz headroom are unnecessary.

Compared with ADSP-21478BBCZ-2A, the ADSP-21477BBCZ-2A offers identical packaging and pinout but trades 1 Mbit SRAM and 4 Mbits ROM for lower cost and power, while the ADSP-21479BBCZ-2A delivers higher memory and peripherals at the expense of package compatibility and design reuse.

Availability

ADSP-21478BBCZ-2A is available at Aetrix Electronics and suitable for professional audio mixers, automotive infotainment head units, and Dolby/DTS decoder modules requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 compliance.

Supply support for ADSP-21478BBCZ-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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and audio systems.

The ADSP-21478BBCZ-2A belongs to the SHARC® family of SIMD-capable floating-point DSPs, designed specifically for deterministic, low-latency audio signal processing in professional, automotive, and broadcast applications.

FAQ

What is the maximum operating frequency of the ADSP-21478BBCZ-2A?

The ADSP-21478BBCZ-2A is rated for up to 300 MHz core clock operation under specified thermal conditions. This speed grade (-2A) is validated across the full industrial temperature range (–40°C to +85°C) and enables 1.8 GFLOPS peak performance. The actual achievable frequency depends on PCB layout, power delivery stability, and thermal management - particularly critical given the 88-LFCSP_VQ package's thermal pad requirements.

Does the ADSP-21478BBCZ-2A include factory-programmed ROM, and what does it contain?

Yes, the ADSP-21478BBCZ-2A includes 4 Mbits of factory-programmed ROM containing licensed Dolby and DTS audio decoders. This ROM is pre-verified and ready for immediate use in certified audio products, eliminating the need for external flash memory and reducing boot time to under 100 ms. The ROM content is fixed and not user-modifiable; security features prevent unauthorized readout.

Is the ADSP-21478BBCZ-2A pin-compatible with other ADSP-2147x variants in the same package?

Yes, the ADSP-21478BBCZ-2A shares identical pinout and package (88-LFCSP_VQ) with the ADSP-21477BBCZ-2A, enabling direct substitution where ROM and 300 MHz capability are not required. However, it is not pin-compatible with the ADSP-21479BBCZ-2A, which is only offered in 196-BGA and includes additional peripherals (RTC, WDT) routed to different balls.

What audio-specific peripherals are integrated into the ADSP-21478BBCZ-2A?

The ADSP-21478BBCZ-2A integrates a comprehensive audio subsystem: one S/PDIF transceiver, four asynchronous sample rate converters (ASRCs), eight serial ports (SPORTs), digital applications interface (DAI) with 20 routing pins, input data port (IDP/PDAP), and four precision clock generators (PCGs). These enable simultaneous handling of multiple sample rates, flexible signal routing, and low-jitter clock synthesis essential for pro-audio and automotive systems.

How does the ROM-based security feature work on the ADSP-21478BBCZ-2A?

The ADSP-21478BBCZ-2A implements ROM-based security by disabling external code boot-loading and restricting JTAG access unless a unique 64-bit customer key is scanned via the Test Access Port. When enabled, the device executes exclusively from internal ROM, and unauthorized attempts to read protected memory or debug via JTAG are ignored - ensuring intellectual property protection for licensed audio algorithms.

ADSP-21478BBCZ-2A Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: SHARC®

Package/Case:: 196-LFBGA, CSPBGA

Packaging:: Tray

Product Status:: Active

Type:: Floating Point

Interface:: DAI, DPI, EBI/EMI, I2C, SPI, SPORT, UART/USART

Clock Rate:: 266MHz

Non-Volatile Memory:: ROM (4Mbit)

On-Chip RAM:: 3Mbit

Voltage - I/O:: 3.30V

Voltage - Core:: 1.20V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 196-CSPBGA (12x12)

ADSP-21478BBCZ-2A FAQ

1.How can I place an order for ADSP-21478BBCZ-2A through Aetrix?

Please submit a Request for Quotation (RFQ) for ADSP-21478BBCZ-2A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ADSP-21478BBCZ-2A reliable?

The price and inventory of ADSP-21478BBCZ-2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-21478BBCZ-2A is usually 5 days.

3.What payment methods are accepted for ADSP-21478BBCZ-2A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-21478BBCZ-2A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADSP-21478BBCZ-2A?

ADSP-21478BBCZ-2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADSP-21478BBCZ-2A order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ADSP-21478BBCZ-2A?

For technical support, including ADSP-21478BBCZ-2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-21478BBCZ-2A requirements.

6.How does Aetrix verify that ADSP-21478BBCZ-2A is sourced from the original manufacturer or authorized distributors?

All ADSP-21478BBCZ-2A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADSP-21478BBCZ-2A meets industry standards.

7.What is the process for return or replacement of ADSP-21478BBCZ-2A?

All ADSP-21478BBCZ-2A units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-21478BBCZ-2A, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ADSP-21478BBCZ-2A part is unused and in its original packaging.

Return procedure for ADSP-21478BBCZ-2A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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