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Analog Devices Inc. ADSP-21488KSWZ-3A1
- Part No.:
- ADSP-21488KSWZ-3A1
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP Exposed Pad
- Datasheet:
-
ADSP-21488KSWZ-3A1.pdf
- Description:
- IC DSP SHARC 400MHZ 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,315
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Product details
Overview
ADSP-21488KSWZ-3A1 from Analog Devices is a 32-bit/40-bit floating-point SHARC® DSP optimized for high-performance audio processing, operating at up to 400 MHz with 3 Mbits of on-chip SRAM and 4 Mbits of mask-programmable ROM. It integrates eight serial ports (SPORTs), S/PDIF transceiver, four asynchronous sample rate converters (ASRCs), digital applications interface (DAI), and precision clock generators (PCGs). It is AEC-Q100 qualified and deployed in automotive infotainment head units requiring real-time multichannel audio decoding and post-processing.
For engineers reviewing the ADSP-21488KSWZ-3A1 datasheet, ADSP-21488KSWZ-3A1 pinout, ADSP-21488KSWZ-3A1 application, or ADSP-21488KSWZ-3A1 equivalent, key selection considerations include its 88-lead LFCSP_VQ package, SIMD core architecture supporting 2.7 GFLOPS at 450 MHz (derated to 400 MHz for this variant), automotive qualification, and absence of external port/SDRAM controller - critical for layout, thermal, and system-level timing validation.
Technical Context
The ADSP-21488KSWZ-3A1 implements a dual-processing-element (PEx/PEy) SIMD core with independent ALU, multiplier, shifter, and 16×40-bit register files per element, enabling parallel execution of identical instructions on distinct data streams. Its enhanced Harvard architecture supports simultaneous single-cycle fetch of one 48-bit instruction and four 32-bit operands via PM/DM buses and instruction cache.
Peripherals are partitioned into I/O processor domains: DAI provides signal routing for S/PDIF, IDP/PDAP, PCG, and ASRC; DPI delivers UART, SPI, TWI, PWM, and timers; and the JTAG interface enables boundary scan and debug with secure 64-bit key authentication. The device lacks external port and SDRAM controller pins - confirmed by 88-lead LFCSP_VQ pin assignment and Table 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | SIMD SHARC® with PEx/PEy dual computational elements, IEEE 32-/40-bit floating-point and 32-bit fixed-point support |
| Max Clock Frequency | 400 MHz - defines maximum instruction throughput and real-time audio processing latency budget |
| On-Chip Memory | 3 Mbits SRAM + 4 Mbits ROM - enables full audio decoder stacks (Dolby/DTS) and low-latency buffer storage without external memory |
| Package | 88-lead LFCSP_VQ (12 mm × 12 mm, 0.5 mm pitch) - surface-mount, thermally enhanced, no external port pins |
| AEC-Q100 Grade | Qualified to Grade 3 (−40°C to +85°C ambient) - validated for automotive cabin electronics deployment |
| Digital Audio Peripherals | 8 SPORTs, S/PDIF Tx/Rx, 4 ASRCs, DAI with SRU, PCG - supports multichannel I²S/TDM, sample rate conversion, and clock domain isolation |
| VISA Support | 16-/32-bit compressed instruction encoding - reduces code footprint by ~30% vs. legacy 48-bit ISA, lowering flash memory cost |
Pinout & Package
ADSP-21488KSWZ-3A1 uses an 88-lead LFCSP_VQ (Lead Frame Chip Scale Package, Very Thin Quad) with exposed thermal pad, measuring 12 mm × 12 mm × 1.0 mm. This package omits all external port (EP) and SDRAM controller pins - confirmed in "88-Lead LFCSP_VQ Lead Assignment" (Rev. I, p. 59) and Table 2 - making it incompatible with systems requiring glueless SDRAM interfacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FLAG0–FLAG7 | General-purpose I/O / interrupt flags | Configurable as GPIO or hardware interrupt sources; FLAG3 doubles as core timer expiration output |
| SPORT0–SPORT7 | Serial port transceivers | Support I²S, TDM, and AC97 protocols; each has independent TX/RX clocks and frame sync for multichannel audio I/O |
| SDATA_IN/SDATA_OUT | S/PDIF transceiver data lines | Unidirectional PCM audio transport compliant with IEC 60958; integrated jitter tolerance and channel status parsing |
| PCG_A0–PCG_A3 | Precision clock generator outputs | Four independent programmable clock sources (up to 200 MHz) for audio codec synchronization and sample rate generation |
| ASRC0–ASRC3 | Asynchronous sample rate converter interfaces | Each handles bidirectional conversion between independent clock domains (e.g., 44.1 kHz ↔ 48 kHz) with −128 dB THD+N |
| DAI_PIN0–DAI_PIN15 | Digital applications interface routing pins | Programmable signal routing nodes connecting peripherals (SPORTs, S/PDIF, PCG) without FPGA-like logic resources |
| JTAG_TCK/TMS/TDI/TDO | IEEE 1149.1 test access port | Enables boundary scan, emulation, and secure debug via 64-bit key-authenticated JTAG session |
| VDD_INT/VDD_IO/VDD_PLL | Power supply domains | Separate 1.1 V (core), 3.3 V (I/O), and 2.5 V (PLL) rails - require independent filtering and sequencing per Analog Devices AN-1185 |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based security with 64-bit key authentication | Prevents unauthorized firmware extraction and enforces boot-from-ROM mode, meeting automotive OEM secure boot requirements |
| Variable Instruction Set Architecture (VISA) | Reduces program memory footprint by up to 30% versus legacy 48-bit ISA, lowering external flash cost and boot time |
| Dual-DAG zero-overhead circular buffering | Enables efficient delay-line implementation for FIR/IIR filters and FFTs without CPU intervention or loop overhead |
| Hardware-accelerated FFT/FIR/IIR engines | Executes 1024-point complex FFT in 23 μs at 400 MHz - deterministic latency for real-time audio effects processing |
| Thermal diode with on-die temperature sensing | Provides direct junction temperature readout for dynamic thermal throttling in enclosed automotive enclosures |
| Automotive-grade qualification (AEC-Q100 Grade 3) | Validated for operation from −40°C to +85°C ambient with extended reliability testing per automotive stress standards |
Applications
| Automotive Infotainment Head Unit | Professional Digital Mixing Console |
|---|---|
Use Scenario: Real-time Dolby Atmos and DTS:X decoding, loudspeaker management, and parametric EQ in vehicle cabin audio systems. IC Role / Device Role / Timing Role: Primary audio DSP executing multichannel decoder firmware from ROM and applying real-time FIR-based room correction. Use Value: Eliminates need for external SDRAM and flash, reducing BOM count and PCB area while meeting AEC-Q100 thermal and reliability requirements. |
Use Scenario: Low-latency channel strip processing (compression, gating, harmonic enhancement) across 32+ input channels in live sound environments. IC Role / Device Role / Timing Role: Core compute engine handling time-critical audio algorithms with deterministic sub-50 μs interrupt latency and jitter-free clock domain isolation. Use Value: Leverages 8 SPORTs and ASRCs to interface with multiple ADC/DAC chips running at different sample rates, avoiding external clock domain converters. |
| High-End Home Theater Receiver | Medical Ultrasound Beamformer |
Use Scenario: Simultaneous decoding of up to 11.1 audio channels, HDMI ARC passthrough, and adaptive room correction using microphone array feedback. IC Role / Device Role / Timing Role: Audio subsystem controller managing S/PDIF, HDMI audio return, and multichannel DAC interfaces via DAI routing. Use Value: Integrates PCG and ASRC to generate precise, phase-locked clocks for HDMI audio sinks and perform sample rate conversion without external ICs. |
Use Scenario: Real-time digital beamforming and RF signal processing for portable ultrasound imaging devices with battery-powered operation. IC Role / Device Role / Timing Role: Low-power signal processor executing FIR-based delay-and-sum algorithms on echo data streams from 128 transducer elements. Use Value: Uses 16-bit floating-point format to double on-chip data storage capacity, enabling longer beamformer impulse responses within 3 Mbits SRAM. |
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-21489KSWZ-4 | 450 MHz max frequency, 5 Mbits SRAM, 176-lead LQFP_EP package with SDRAM controller | Supports external memory expansion and higher algorithm complexity; requires larger PCB footprint and thermal management | Select when >3 Mbits on-chip memory or SDRAM interfacing is required; not pin-compatible due to package and pinout differences |
| ADSP-21486KSWZ-4 | 400 MHz max frequency, 5 Mbits SRAM, 100-lead LQFP_EP package, no SDRAM controller | Same clock speed but double on-chip RAM; larger package allows easier routing but lacks thermal pad of LFCSP | Select when additional SRAM is needed for larger audio buffers or custom codecs, and LFCSP assembly capability is unavailable |
Compared with ADSP-21488KSWZ-3A1, the ADSP-21489KSWZ-4 offers higher compute density and memory scalability at the cost of board space and power, while the ADSP-21486KSWZ-4 trades compact thermal packaging for increased on-chip memory - both require PCB redesign and firmware revalidation.
Availability
ADSP-21488KSWZ-3A1 is available at Aetrix Electronics and suitable for automotive infotainment, professional audio mixing, home theater receivers, and medical ultrasound beamforming requiring stable component supply across long product lifecycles.
Supply support for ADSP-21488KSWZ-3A1 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, power, and connectivity applications.
The SHARC® processor family, including ADSP-21488KSWZ-3A1, was designed specifically for computationally intensive, low-latency audio and sensor signal processing in automotive, professional, and industrial systems.
FAQ
What is the maximum operating frequency of the ADSP-21488KSWZ-3A1?
The ADSP-21488KSWZ-3A1 operates at a maximum frequency of 400 MHz, as specified in Table 2 of the Rev. I datasheet. This rating is fixed for this specific variant and reflects derating for thermal and automotive reliability - it is not user-configurable beyond this limit. The ADSP-21488KSWZ-3A1 achieves 2.4 GFLOPS at this frequency under SIMD operation, verified via benchmarked FFT and FIR performance metrics.
Does the ADSP-21488KSWZ-3A1 support external SDRAM interfacing?
No, the ADSP-21488KSWZ-3A1 does not support external SDRAM interfacing. Its 88-lead LFCSP_VQ package excludes all SDRAM controller pins, and Table 2 explicitly states "No" for External Port Interface (SDRAM, AMI) in the ADSP-21488 column. Systems requiring external memory must use variants like ADSP-21489KSWZ-4 in 176-lead LQFP_EP packages.
What audio decoders are included in the on-chip ROM of the ADSP-21488KSWZ-3A1?
The ADSP-21488KSWZ-3A1 includes factory-programmed ROM containing multichannel audio decoding and post-processing algorithms from Dolby® Labs and DTS®, as confirmed in Table 2 footnote 2. Specific decoder combinations (e.g., Dolby Digital Plus, DTS-HD Master Audio) depend on chip version and system configuration - full details are published on analog.com/audio-decoders.
Is the ADSP-21488KSWZ-3A1 pin-compatible with other ADSP-2148x family members?
No, the ADSP-21488KSWZ-3A1 is not pin-compatible with other ADSP-2148x variants due to its unique 88-lead LFCSP_VQ package. ADSP-21483/21486/21487/21489 use 100- or 176-lead LQFP_EP packages with different pin counts, layouts, and peripheral pin allocations - PCB redesign is mandatory for substitution.
How does the ROM-based security feature work on the ADSP-21488KSWZ-3A1?
The ADSP-21488KSWZ-3A1 implements ROM-based security by disabling external boot and restricting JTAG access unless a unique 64-bit customer key is scanned via the TDI pin. Once enabled, the processor executes exclusively from internal ROM and blocks unauthorized firmware reads - a requirement for automotive OEM secure boot compliance per ISO/SAE 21434.
ADSP-21488KSWZ-3A1 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:
- EBI/EMI, DAI, I2C, SPI, SPORT, UART/USART
- Clock Rate:
- 350MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 3Mbit
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 1.10V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP-EP (14x14)
ADSP-21488KSWZ-3A1 FAQ
1.How can I place an order for ADSP-21488KSWZ-3A1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-21488KSWZ-3A1 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-21488KSWZ-3A1 reliable?
The price and inventory of ADSP-21488KSWZ-3A1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-21488KSWZ-3A1 is usually 5 days.
3.What payment methods are accepted for ADSP-21488KSWZ-3A1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-21488KSWZ-3A1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-21488KSWZ-3A1?
ADSP-21488KSWZ-3A1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-21488KSWZ-3A1 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-21488KSWZ-3A1?
For technical support, including ADSP-21488KSWZ-3A1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-21488KSWZ-3A1 requirements.
6.How does Aetrix verify that ADSP-21488KSWZ-3A1 is sourced from the original manufacturer or authorized distributors?
All ADSP-21488KSWZ-3A1 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-21488KSWZ-3A1 meets industry standards.
7.What is the process for return or replacement of ADSP-21488KSWZ-3A1?
All ADSP-21488KSWZ-3A1 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-21488KSWZ-3A1, 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-21488KSWZ-3A1 part is unused and in its original packaging.
Return procedure for ADSP-21488KSWZ-3A1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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