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Analog Devices Inc. ADSP-21488KSWZ-4B1
- Part No.:
- ADSP-21488KSWZ-4B1
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 176-LQFP Exposed Pad
- Datasheet:
-
ADSP-21488KSWZ-4B1.pdf
- Description:
- IC CCD SIGNAL PROCESSOR 176LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,469
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Product details
Overview
ADSP-21488KSWZ-4B1 from Analog Devices is a 32-bit/40-bit floating-point SHARC® DSP optimized for high-performance audio processing in automotive and professional audio systems. It operates at up to 400 MHz, integrates 3 Mbits of on-chip SRAM and 4 Mbits of mask-ROM, and features SIMD computational architecture with dual processing elements (PEx/PEy), enabling 2.16 GFLOPS peak performance. Its digital applications interface (DAI) includes S/PDIF transceiver, four asynchronous sample rate converters (ASRC), eight serial ports (SPORT), and precision clock generators - all supporting real-time multichannel audio routing and processing.
For engineers reviewing the ADSP-21488KSWZ-4B1 datasheet, ADSP-21488KSWZ-4B1 pinout, ADSP-21488KSWZ-4B1 application, or ADSP-21488KSWZ-4B1 equivalent, key selection criteria include its AEC-Q100 qualification, 88-lead LFCSP_VQ package, 400 MHz core frequency, ROM-based audio decoder support, and absence of external port (SDRAM/AMI) due to package constraints - critical for space-constrained automotive infotainment and premium audio head units.
Technical Context
The ADSP-21488KSWZ-4B1 implements a dual-processing-element SIMD core with independent ALU, multiplier, shifter, and 16-register data files per element (R0–R15/S0–S15), enabling parallel execution of identical instructions on distinct data streams. Its enhanced Harvard architecture supports simultaneous 48-bit instruction fetch from cache and four 32-bit operand transfers via PM/DM buses - sustaining full-speed FIR, IIR, and FFT operations without pipeline stalls.
Peripherally, it integrates a fully configurable DAI with SRU routing, S/PDIF Tx/Rx, four ASRCs (–128 dB THD+N), eight SPORTs, and IDP/PDAP for serial/parallel interconnect - all clocked by four independent PCGs. The absence of external port pins in the 88-lead LFCSP_VQ package eliminates SDRAM/AMI interface capability, distinguishing it from 100- and 176-lead variants.
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 5-stage sequencer |
| Max Core Frequency | 400 MHz - delivers 2.16 GFLOPS peak compute, validated for real-time 1024-point FFT in 23 μs |
| On-Chip Memory | 3 Mbits SRAM (configurable as 160k × 32-bit or mixed word sizes) + 4 Mbits mask-ROM with Dolby/DTS audio decoders |
| Package | 88-lead LFCSP_VQ (12 mm × 12 mm, 0.5 mm pitch) - no external port pins; SDRAM/AMI disabled |
| Automotive Qualification | AEC-Q100 Grade 2 (–40°C to +105°C ambient) - qualified for front/rear infotainment ECUs and amplifier modules |
| Digital Audio Peripherals | S/PDIF transceiver, 4× ASRC (–128 dB performance), 8× SPORT, IDP/PDAP, 4× PWM, TWI, SPI, UART, and DAI/DPI SRU routing |
| Security | ROM-based boot security with 64-bit JTAG key authentication - prevents unauthorized code readout and external boot loading |
Pinout & Package
ADSP-21488KSWZ-4B1 is housed in an 88-lead LFCSP_VQ (Lead Frame Chip Scale Package, Very Thin Quad Flat No-Lead) measuring 12 mm × 12 mm with 0.5 mm pitch and exposed thermal pad. This package omits all external port (EP) pins - disabling SDRAM and AMI interfaces - and reduces pin count versus 100- and 176-lead LQFP_EP variants. Thermal diode and power management pins are retained for automotive thermal monitoring.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_IO / VDD_INT | Power supply rails | Separate 3.3 V I/O and 1.2 V core supplies - enables low-noise analog audio subsystem integration |
| CLKIN / CLKOUT | Master clock input/output | Accepts 1–50 MHz crystal or CMOS clock; CLKOUT drives external codecs or ASRC reference clocks |
| DAI_Px / DAI_Nx | Digital Applications Interface pins | Differential S/PDIF Tx/Rx, SPORT data/clock, PCG outputs - support multichannel TDM, I²S, and custom audio protocols |
| IDP0–IDP7 / PDAP0–PDAP7 | Input Data Port / Parallel Data Access Port | 8-bit parallel interface for ADC/DAC bridging or FPGA co-processing - configurable as input-only or bidirectional |
| FLAG0–FLAG3 | General-purpose I/O / interrupt flags | Programmable as GPIO, timer expiration signals, or external interrupt inputs - FLAG3 used for core timer expiry |
| TCK/TMS/TDO/TDI | JTAG test access port | IEEE 1149.1-compliant debug interface with 64-bit security key scan - required for secure emulation and firmware update |
Key Features
| Feature | Design Value |
|---|---|
| SIMD Computational Engine | Dual PEx/PEy elements execute identical instructions on separate data streams - doubles throughput for FIR/IIR filters and FFTs without software restructuring |
| Variable Instruction Set Architecture (VISA) | Supports 16-/32-/48-bit instructions - reduces code size by ~35% vs legacy ISA, lowering external memory bandwidth demand |
| Digital Applications Interface (DAI) | Hardware SRU routes signals between 8 SPORTs, S/PDIF, ASRCs, PCGs, and IDP/PDAP - eliminates FPGA glue logic for audio matrix switching |
| ROM-Based Audio Security & Decoding | Factory-programmed Dolby/DTS multichannel decoders + boot lock - ensures IP protection and eliminates external codec licensing in premium audio systems |
| AEC-Q100 Automotive Compliance | Qualified to Grade 2 (–40°C to +105°C) with integrated thermal diode - enables deployment in dashboard head units without external temperature sensors |
Applications
| Automotive Infotainment Head Unit | Premium Multi-Zone Audio Amplifier |
|---|---|
|
Use Scenario: Central audio processor in vehicle head unit managing Bluetooth streaming, USB playback, navigation voice prompts, and rear-seat entertainment. IC Role / Device Role / Timing Role: Real-time audio mixing, sample rate conversion (ASRC), Dolby Digital decoding (ROM-based), and S/PDIF output to amplifier. Use Value: Eliminates need for external audio codec and FPGA; 400 MHz core handles concurrent 8-channel decode + 32-band EQ + dynamic range control within 5 ms latency. |
Use Scenario: Channel-specific DSP in 16-channel Class-D amplifier for luxury vehicles, performing active crossover, time alignment, and speaker protection. IC Role / Device Role / Timing Role: Low-latency FIR filter engine for acoustic correction, with SPORTs feeding ADC data and driving PWM-modulated gate drivers. Use Value: On-chip 3 Mbits SRAM stores 16-channel FIR coefficients; SIMD execution achieves sub-100 μs filter latency per channel at 96 kHz sampling. |
| Professional Digital Mixer Console | High-End Home Theater AV Receiver |
|
Use Scenario: Embedded DSP engine in compact stage mixer handling mic preamp modeling, dynamics processing, and monitor mix routing. IC Role / Device Role / Timing Role: DAI SRU configures 8 SPORTs as I²S inputs/outputs; PCGs generate independent sample clocks for multi-rate sources. Use Value: Four ASRCs enable seamless integration of 44.1 kHz, 48 kHz, and 96 kHz sources without external resampling ICs - reducing BOM and jitter. |
Use Scenario: Core audio processor in 11.2-channel AV receiver performing object-based audio decoding (Dolby Atmos), room correction, and bass management. IC Role / Device Role / Timing Role: ROM-hosted Dolby Atmos decoder + real-time Dirac Live room correction using on-chip FFT/FIR accelerators. Use Value: Mask-ROM eliminates external flash storage and boot firmware validation; thermal diode enables fanless chassis design compliant with CE noise limits. |
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-4A | 450 MHz core, 5 Mbits SRAM, 176-lead LQFP_EP package with full SDRAM/AMI interface | Supports external DDR2 memory expansion and complex system-level buffering - suitable for scalable multi-processor audio platforms | Select when >400 MHz compute, >3 Mbits RAM, or external memory interfacing is required; not pin-compatible with ADSP-21488KSWZ-4B1 |
| ADSP-21486KSWZ-4A | 400 MHz core, 5 Mbits SRAM, 100-lead LQFP_EP package - includes SDRAM controller but no AMI | Enables cost-optimized external memory use in mid-tier automotive audio without full 176-pin footprint | Choose for balanced memory capacity and external DRAM support in space-constrained designs where 88-pin LFCSP is insufficient |
Compared with ADSP-21488KSWZ-4B1, the ADSP-21489KSWZ-4A offers higher compute and memory but requires PCB redesign for 176-pin LQFP; the ADSP-21486KSWZ-4A provides more on-chip RAM than ADSP-21488KSWZ-4B1 while retaining 400 MHz operation and adding SDRAM support in a 100-pin package - making it a functional upgrade path without architectural change.
Availability
ADSP-21488KSWZ-4B1 is available at Aetrix Electronics and suitable for automotive infotainment, premium audio amplifiers, professional digital mixers, and high-end home theater receivers requiring stable component supply across extended product lifecycles.
Supply support for ADSP-21488KSWZ-4B1 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 deep expertise in signal processing for audio, industrial, and automotive markets.
The ADSP-21488KSWZ-4B1 belongs to the SHARC® family of SIMD floating-point DSPs, designed specifically for deterministic, low-latency audio processing in safety-critical and resource-constrained environments - emphasizing ROM security, AEC-Q100 compliance, and peripheral integration for end-to-end audio signal chains.
FAQ
What is the maximum operating frequency of the ADSP-21488KSWZ-4B1?
The ADSP-21488KSWZ-4B1 is rated for a maximum core clock frequency of 400 MHz, delivering 2.16 GFLOPS peak performance. This frequency is guaranteed across the full AEC-Q100 Grade 2 temperature range (–40°C to +105°C ambient) and is validated using the 1024-point complex FFT benchmark at 23 μs execution time. Operation above 400 MHz is not supported or characterized.
Does the ADSP-21488KSWZ-4B1 support external SDRAM or asynchronous memory interfaces?
No, the ADSP-21488KSWZ-4B1 in the 88-lead LFCSP_VQ package does not support external SDRAM or asynchronous memory interfaces. All external port (EP) pins - including SDRAM address/data/control and AMI signals - are omitted from this package variant. The Ordering Guide and Pin Function Descriptions explicitly state that SDRAM controller pins must be disabled when using the 88-lead package.
What audio decoders are included in the on-chip ROM of the ADSP-21488KSWZ-4B1?
The ADSP-21488KSWZ-4B1 includes factory-programmed multichannel audio decoding and post-processing algorithms from Dolby® Labs and DTS® in its 4 Mbits of mask-ROM. Specific decoder combinations (e.g., Dolby Digital Plus, DTS-HD Master Audio) depend on chip version and system configuration; full details are available in the latest Analog Devices audio decoder support documentation.
Is the ADSP-21488KSWZ-4B1 pin-compatible with other ADSP-2148x family members?
No, the ADSP-21488KSWZ-4B1 is not pin-compatible with other ADSP-2148x variants. It uses an 88-lead LFCSP_VQ package, whereas ADSP-21483/21486/21487/21489 are offered in 100- or 176-lead LQFP_EP packages. Pin functions, counts, and peripheral availability (e.g., missing EP pins) differ significantly - requiring unique PCB layout and schematic design.
How does the ROM-based security feature work on the ADSP-21488KSWZ-4B1?
The ADSP-21488KSWZ-4B1 implements ROM-based security by preventing boot-loading of external code and restricting JTAG access. A unique 64-bit key must be scanned via JTAG before emulation or debugging is enabled; incorrect keys are ignored. When activated, the processor executes exclusively from internal ROM, blocking unauthorized readout of protected firmware.
ADSP-21488KSWZ-4B1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SHARC®
- Package/Case:
- 176-LQFP Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Floating Point
- Interface:
- EBI/EMI, DAI, I2C, SPI, SPORT, UART/USART
- Clock Rate:
- 400MHz
- 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:
- 176-LQFP-EP (24x24)
ADSP-21488KSWZ-4B1 FAQ
1.How can I place an order for ADSP-21488KSWZ-4B1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-21488KSWZ-4B1 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-4B1 reliable?
The price and inventory of ADSP-21488KSWZ-4B1 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-4B1 is usually 5 days.
3.What payment methods are accepted for ADSP-21488KSWZ-4B1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-21488KSWZ-4B1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-21488KSWZ-4B1?
ADSP-21488KSWZ-4B1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-21488KSWZ-4B1 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-4B1?
For technical support, including ADSP-21488KSWZ-4B1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-21488KSWZ-4B1 requirements.
6.How does Aetrix verify that ADSP-21488KSWZ-4B1 is sourced from the original manufacturer or authorized distributors?
All ADSP-21488KSWZ-4B1 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-4B1 meets industry standards.
7.What is the process for return or replacement of ADSP-21488KSWZ-4B1?
All ADSP-21488KSWZ-4B1 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-21488KSWZ-4B1, 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-4B1 part is unused and in its original packaging.
Return procedure for ADSP-21488KSWZ-4B1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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