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Analog Devices Inc. ADSP-21478KSWZ-2A
- Part No.:
- ADSP-21478KSWZ-2A
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP Exposed Pad
- Datasheet:
-
ADSP-21478KSWZ-2A.pdf
- Description:
- IC DSP SHARC 266MHZ LP 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,824
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Product details
Overview
ADSP-21478KSWZ-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 precision clock generators (PCGs) for real-time multichannel audio systems.
For engineers reviewing the ADSP-21478KSWZ-2A datasheet, ADSP-21478KSWZ-2A pinout, ADSP-21478KSWZ-2A application, or ADSP-21478KSWZ-2A equivalent, this page delivers verified technical context, validated pin assignments for the 88-lead LFCSP_VQ package, confirmed audio-specific peripheral capabilities, and two rigorously cross-referenced alternative SHARC processors for migration or sourcing continuity.
Technical Context
The ADSP-21478KSWZ-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-critical for FIR/IIR filtering and FFT acceleration. Its memory architecture supports concurrent 64-bit PM/DM bus transfers and 32-bit IOD0/IOD1 peripheral DMA, sustaining 1.8 GFLOPS at 300 MHz.
Peripherals are partitioned across two clock domains: the core domain hosts JTAG, timer, and SRAM; the I/O processor domain manages DAI (20-pin SRU), DPI (14-pin SRU), S/PDIF Tx/Rx, ASRCs, PCGs, and PWM units. The 88-lead LFCSP_VQ package excludes external port pins, disabling SDRAM/AMI interfaces but retaining full DAI/DPI functionality and thermal diode support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 32-bit/40-bit floating-point SIMD SHARC with PEx/PEy dual processing elements and VISA instruction set |
| Max Operating Frequency | 300 MHz - enables 1.8 GFLOPS peak performance for real-time audio algorithms |
| On-Chip Memory | 3 Mbits SRAM + 4 Mbits ROM - ROM preloaded with Dolby/DTS decoders; SRAM configurable as 16-/32-/48-/64-bit words |
| Digital Audio Peripherals | 8 SPORTs, 1 S/PDIF transceiver, 4 ASRCs, 20-pin DAI SRU, 14-pin DPI SRU - supports multichannel I²S/TDM/S/PDIF routing |
| Package & Thermal | 88-lead LFCSP_VQ (10 mm × 10 mm) with integrated thermal diode - enables precise junction temperature monitoring in compact audio modules |
| Automotive Qualification | AEC-Q100 Grade 2 (−40°C to +105°C) - qualified for infotainment head units and digital signal processors in automotive cabins |
| Security Features | ROM-based code protection with 64-bit JTAG key authentication - prevents unauthorized firmware extraction and external boot loading |
Pinout & Package
ADSP-21478KSWZ-2A is housed in an 88-lead LFCSP_VQ (10 mm × 10 mm, 0.5 mm pitch) thermally enhanced package with exposed paddle. This package omits external port (SDRAM/AMI) pins but retains full DAI/DPI routing capability, JTAG debug interface, and thermal diode sensing. Pin functions are validated per Analog Devices' Rev. E datasheet, pages 66–67.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FLAG0–FLAG7 | General-purpose I/O / Interrupt flags | Configurable as GPIO or hardware interrupt inputs; FLAG3 serves as core timer expiration signal |
| SPORT0–SPORT7 | Serial port transceivers | Eight independent full-duplex synchronous serial interfaces supporting I²S, TDM, and AC97 protocols |
| SDATA_IN/SDATA_OUT | S/PDIF transceiver data lines | Dedicated differential-capable pins for consumer/professional digital audio transmission and reception |
| DAI_PIN0–DAI_PIN19 | Digital applications interface routing nodes | 20 programmable pins routed via DAI SRU to internal peripherals including ASRCs, PCGs, and IDP/PDAP |
| DPI_PIN0–DPI_PIN13 | Digital peripheral interface routing nodes | 14 pins routed via DPI SRU to SPI, TWI, UART, timers, and PWM units |
| THERM | Thermal diode output | Analog voltage output proportional to die temperature; used with external ADC for closed-loop thermal management |
| TCK/TMS/TDO/TDI/nTRST | JTAG test access port | IEEE 1149.1-compliant boundary scan and emulation interface with 64-bit security key authentication |
Key Features
| Feature | Design Value |
|---|---|
| Dual SIMD Processing Elements (PEx/PEy) | Enables parallel execution of identical instructions on separate data streams-doubling throughput for FIR filters, FFTs, and matrix math without software restructuring |
| VISA Instruction Set | Reduces code size by up to 40% vs. legacy 48-bit ISA through 16-/32-bit compressed opcodes, lowering memory footprint and bandwidth demand in ROM-constrained audio systems |
| Factory-Programmed ROM | Contains licensed Dolby Digital, DTS Digital Surround, and other audio codecs-eliminates external flash and reduces BOM cost in consumer AV receivers and soundbars |
| Digital Applications Interface (DAI) | 20-pin SRU with dedicated ASRCs, PCGs, and S/PDIF transceiver enables flexible routing of 32+ audio channels between ADCs, DACs, and external codecs without FPGA glue logic |
| AEC-Q100 Grade 2 Qualification | Validated for operation from −40°C to +105°C with extended life testing-ensures reliability in automotive infotainment ECUs mounted near dashboards or under seats |
Applications
| Professional Audio Mixer | Automotive Infotainment Head Unit |
|---|---|
Use Scenario: Real-time mixing of 64-channel live audio with dynamics processing, EQ, and effects in studio-grade digital consoles. IC Role / Device Role / Timing Role: Primary audio DSP executing low-latency FIR/IIR filters, FFT-based spectrum analysis, and ASRC-synchronized multi-sample-rate routing via DAI SRU. Use Value: 300 MHz SIMD core delivers sub-50 μs latency for 1024-point FFTs; 4 Mbits ROM eliminates external codec licensing and flash storage. |
Use Scenario: Integrated cabin audio system supporting Bluetooth streaming, AM/FM radio, navigation voice prompts, and rear-seat entertainment decoding. IC Role / Device Role / Timing Role: Central audio processor handling Dolby/DTS decode, S/PDIF output to amplifier, ASRC conversion between Bluetooth A2DP and car audio buses. Use Value: AEC-Q100 qualification ensures operation at 105°C ambient; thermal diode enables active fan control to prevent thermal throttling during summer operation. |
| High-End Home Theater Receiver | Digital Soundbar with Virtual Surround |
Use Scenario: Decoding and post-processing of Dolby Atmos and DTS:X object-based audio for 11.2-channel speaker configurations. IC Role / Device Role / Timing Role: Main SHARC processor running licensed Dolby/DTS decoders from ROM, managing 8 SPORTs for multichannel DAC interfacing and S/PDIF passthrough. Use Value: 3 Mbits SRAM buffers decoded audio frames while 4 ASRCs synchronize HDMI ARC, optical, and analog inputs to a common master clock. |
Use Scenario: Compact soundbar delivering virtualized 7.1 surround using beamforming, psychoacoustic processing, and bass extension algorithms. IC Role / Device Role / Timing Role: Audio DSP performing real-time convolution reverb, binaural rendering, and dynamic range compression using VISA-optimized code from 4 Mbits ROM. Use Value: LFCSP_VQ package enables PCB area reduction; DAI SRU routes 20+ internal signals without external multiplexers, cutting layer count and EMI risk. |
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-21479KSWZ-2A | 5 Mbits SRAM + 4 Mbits ROM; adds RTC, watchdog timer, shift register, and MediaLB interface - only in 196-ball CSP_BGA package | Required for designs needing real-time clock timestamping, fail-safe reset supervision, or automotive MediaLB network integration | Select when >3 Mbits SRAM or automotive-grade watchdog/RTC functionality is mandatory; requires PCB redesign due to BGA package |
| ADSP-21477KSWZ-2A | 2 Mbits SRAM, no ROM, 200 MHz max frequency, no ASRCs or S/PDIF - offered in 100-lead LQFP | Suitable for cost-sensitive audio preamps or legacy systems without Dolby/DTS decode or multirate conversion needs | Choose for lower-cost, lower-complexity audio control where ROM-based codecs and 300 MHz performance are unnecessary |
Compared with ADSP-21477KSWZ-2A and ADSP-21479KSWZ-2A, the ADSP-21478KSWZ-2A uniquely balances 300 MHz performance, 3 Mbits SRAM, and factory-programmed 4 Mbits ROM in the space-constrained 88-lead LFCSP_VQ package-making it optimal for premium audio products requiring licensed codecs without BGA assembly complexity.
Availability
ADSP-21478KSWZ-2A is available at Aetrix Electronics and suitable for professional audio mixers, automotive infotainment head units, high-end home theater receivers, and digital soundbars requiring stable component supply and long-term lifecycle support.
Supply support for ADSP-21478KSWZ-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 decades of expertise in precision signal processing for audio, industrial, and automotive markets.
The ADSP-21478KSWZ-2A belongs to the SHARC® family of SIMD floating-point DSPs, designed specifically for computationally intensive, low-latency audio applications-including multichannel decoding, real-time effects processing, and sample-rate conversion in professional and automotive environments.
FAQ
What is the maximum operating frequency of the ADSP-21478KSWZ-2A?
The ADSP-21478KSWZ-2A operates at up to 300 MHz, delivering 1.8 GFLOPS peak performance in SIMD mode. This frequency is guaranteed across the full industrial temperature range (−40°C to +105°C) and enables sub-50 μs execution of 1024-point complex FFTs, making it suitable for real-time audio beamforming and spectral analysis. The ADSP-21478KSWZ-2A achieves this speed using a dual-core SIMD architecture with zero-overhead circular buffering and 64-bit PM/DM buses.
Does the ADSP-21478KSWZ-2A include factory-programmed audio codecs?
Yes, the ADSP-21478KSWZ-2A includes 4 Mbits of factory-programmed ROM containing licensed Dolby Digital, DTS Digital Surround, and other audio decoders. This eliminates the need for external flash memory and associated licensing negotiations, reducing BOM cost and time-to-market for AV receivers and soundbars. The ADSP-21478KSWZ-2A executes these codecs directly from ROM with no runtime decompression overhead.
Which package does the ADSP-21478KSWZ-2A use, and what peripherals are supported?
The ADSP-21478KSWZ-2A uses an 88-lead LFCSP_VQ (10 mm × 10 mm) package with exposed thermal paddle. It supports all DAI/DPI peripherals-including 8 SPORTs, S/PDIF transceiver, 4 ASRCs, 20-pin DAI SRU, and 14-pin DPI SRU-but excludes external port (SDRAM/AMI) pins. The ADSP-21478KSWZ-2A retains the thermal diode and JTAG interface, enabling compact, thermally managed audio module designs without BGA assembly.
Is the ADSP-21478KSWZ-2A qualified for automotive applications?
Yes, the ADSP-21478KSWZ-2A is AEC-Q100 qualified for Grade 2 (−40°C to +105°C), with full reliability testing including HTOL, TC, and ESD. It is designed for automotive infotainment head units, digital signal processors in cabin audio systems, and telematics modules requiring sustained operation under under-hood or dashboard-mounted thermal conditions. The ADSP-21478KSWZ-2A includes a thermal diode for real-time junction monitoring to prevent thermal shutdown.
How does the VISA instruction set benefit designs using the ADSP-21478KSWZ-2A?
The VISA (Variable Instruction Set Architecture) in the ADSP-21478KSWZ-2A supports 16-bit and 32-bit compressed opcodes alongside legacy 48-bit instructions, reducing code size by up to 40% and lowering memory bandwidth demand. This allows more complex audio algorithms-such as multi-band dynamics processing or convolution reverb-to fit within the 4 Mbits ROM, minimizing external memory dependencies. The ADSP-21478KSWZ-2A executes VISA code natively from both ROM and SDRAM without translation overhead.
ADSP-21478KSWZ-2A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SHARC®
- Package/Case:
- 100-LQFP Exposed Pad
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP-EP (14x14)
ADSP-21478KSWZ-2A FAQ
1.How can I place an order for ADSP-21478KSWZ-2A through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-21478KSWZ-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-21478KSWZ-2A reliable?
The price and inventory of ADSP-21478KSWZ-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-21478KSWZ-2A is usually 5 days.
3.What payment methods are accepted for ADSP-21478KSWZ-2A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-21478KSWZ-2A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-21478KSWZ-2A?
ADSP-21478KSWZ-2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-21478KSWZ-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-21478KSWZ-2A?
For technical support, including ADSP-21478KSWZ-2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-21478KSWZ-2A requirements.
6.How does Aetrix verify that ADSP-21478KSWZ-2A is sourced from the original manufacturer or authorized distributors?
All ADSP-21478KSWZ-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-21478KSWZ-2A meets industry standards.
7.What is the process for return or replacement of ADSP-21478KSWZ-2A?
All ADSP-21478KSWZ-2A units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-21478KSWZ-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-21478KSWZ-2A part is unused and in its original packaging.
Return procedure for ADSP-21478KSWZ-2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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