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Analog Devices Inc. ADSP-21489BSWZ-3A
- Part No.:
- ADSP-21489BSWZ-3A
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP Exposed Pad
- Datasheet:
-
ADSP-21489BSWZ-3A.pdf
- Description:
- IC CCD SIGNAL PROCESSOR 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:129
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Product details
Overview
ADSP-21489BSWZ-3A from Analog Devices is a 32-bit/40-bit floating-point SHARC® DSP optimized for high-performance audio processing, operating at up to 450 MHz with 5 Mbits on-chip SRAM and 4 Mbits mask-programmed ROM containing Dolby® and DTS® audio decoders. It integrates eight serial ports (SPORTs), S/PDIF transceiver, four asynchronous sample rate converters (ASRCs), digital applications interface (DAI), and precision clock generators (PCGs), deployed in professional audio mixing consoles and broadcast encoders.
For engineers reviewing the ADSP-21489BSWZ-3A datasheet, ADSP-21489BSWZ-3A pinout, ADSP-21489BSWZ-3A application, or ADSP-21489BSWZ-3A equivalent, key selection criteria include SIMD computational throughput (2.7 GFLOPS at 450 MHz), on-chip memory bandwidth (2 × 64-bit core buses + 2 × 32-bit peripheral buses), ROM-based security enforcement, and AEC-Q100 qualification for automotive infotainment systems.
Technical Context
The ADSP-21489BSWZ-3A implements a dual-processing-element SIMD architecture with PEx (always active) and PEy (enabled via MODE1.PEYEN), enabling parallel execution of identical instructions on independent data streams. Its enhanced Harvard architecture supports simultaneous single-cycle fetch of one 48-bit instruction and four 32-bit operands using PM/DM buses and instruction cache.
Peripherals are partitioned into two clock domains: core domain (450 MHz) hosts DAG1/DAG2, FFT/FIR/IIR accelerators, and JTAG debug; I/O processor domain (PCLK) manages DAI (S/PDIF, ASRC, PCG, IDP/PDAP), DPI (SPI, TWI, UART, PWM), and external port (SDRAM/AMI) with dedicated 32-bit IOD0/IOD1 buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Frequency | 450 MHz maximum - enables 2.7 GFLOPS SIMD performance for real-time FIR filtering (1.1 ns/tap) and 1024-point FFT (20.44 μs). |
| On-Chip Memory | 5 Mbits SRAM (160k × 32-bit max) + 4 Mbits ROM - supports full audio codec execution without external code fetch; ROM contains factory-programmed Dolby/DTS decoders. |
| Processing Architecture | Dual 40-bit ALU/multiplier/shifter PEx/PEy with 16-register files (R0–R15/S0–S15) - enables true SIMD operation with zero-overhead circular buffering via two DAGs. |
| Digital Peripherals | 8 SPORTs, S/PDIF Tx/Rx, 4 ASRCs, 4 PWM units, 1 UART, 2 SPI, 1 TWI, DAI/DPI SRUs - provides native multichannel audio I/O routing without external glue logic. |
| Security & Compliance | ROM-based boot security (64-bit JTAG key required) and AEC-Q100 Grade 2 qualification - ensures secure firmware execution and automotive-grade thermal/reliability performance. |
| External Interface | 16-bit SDRAM controller (bank 0–3) + AMI - supports up to 62M words SDRAM (bank 0) and 8M words asynchronous memory per bank, with programmable timing for slow devices. |
Pinout & Package
ADSP-21489BSWZ-3A is packaged in an 88-lead LFCSP_VQ (Lead Frame Chip Scale Package) with exposed thermal pad, measuring 12 mm × 12 mm × 1.15 mm (max). This thermally enhanced package supports high-power audio DSP operation with junction-to-board thermal resistance of 12.5°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND | Power Ground | Primary analog/digital ground reference for core and I/O domains; requires low-inductance connection to PCB ground plane. |
| VDD_INT | Core Supply (1.1 V) | Supplies 450 MHz SIMD core; requires tight regulation (±3%) and local 10 μF/1 μF decoupling per power rail. |
| VDD_IO | I/O Supply (3.3 V) | Drives all digital peripherals (SPORTs, S/PDIF, SPI, TWI); tolerant of 3.0–3.6 V range per specification. |
| CLKIN | Reference Clock Input | Accepts 1–50 MHz crystal or CMOS clock; feeds PLL to generate 450 MHz core clock and derived peripheral clocks. |
| RESET | Active-Low Reset | Asynchronous reset input; must be held low ≥ 100 ns after power stabilization before release to initiate boot sequence. |
| TCK/TMS/TDO/TDI | JTAG Test Access Port | Supports boundary scan and ICE debugging; requires 64-bit security key for full access when ROM security is enabled. |
Key Features
| Feature | Design Value |
|---|---|
| Variable Instruction Set Architecture (VISA) | Reduces code size by compressing 48-bit instructions into 16-/32-bit opcodes, lowering external memory bandwidth demand by up to 40% during SDRAM code fetch. |
| Digital Applications Interface (DAI) | Configurable signal routing unit (SRU) interconnects 8 SPORTs, S/PDIF, ASRCs, PCGs, and IDP/PDAP - eliminates external crosspoint switches in multichannel audio systems. |
| FIR/IIR/FFT Hardware Accelerators | Offloads common DSP kernels from core execution, enabling concurrent real-time processing of >32-channel audio streams while maintaining <50 μs latency. |
| Thermal Diode | Integrated on-die temperature sensor with ±2°C accuracy - enables closed-loop thermal management in fanless audio amplifiers and automotive head units. |
| ROM-Based Security Enforcement | Prevents unauthorized external code loading and JTAG access unless correct 64-bit key is scanned; mandatory for certified broadcast and automotive safety-critical firmware. |
Applications
| Professional Audio Mixing Console | Broadcast Audio Encoder |
|---|---|
Use Scenario: Real-time mixing of 64-channel AES/EBU digital audio with dynamic EQ, compression, and reverb effects. IC Role / Device Role / Timing Role: Primary audio processing engine executing time-critical FIR filters and FFT-based spectral analysis at 96 kHz sample rate. Use Value: 5 Mbits on-chip SRAM stores entire effect chain state; 450 MHz SIMD core delivers deterministic sub-100 μs latency across all channels. |
Use Scenario: Encoding multichannel PCM audio into Dolby Digital Plus and DTS-HD Master Audio bitstreams for ATSC 3.0 transmission. IC Role / Device Role / Timing Role: Host processor running factory-programmed ROM decoders and post-processing algorithms with S/PDIF and ASRC synchronization. Use Value: 4 Mbits ROM contains certified Dolby/DTS decoder binaries; ASRCs handle sample rate conversion between broadcast ingest (48 kHz) and encoder output (44.1 kHz). |
| Automotive Infotainment Head Unit | High-End Home Theater Receiver |
Use Scenario: AEC-Q100-compliant audio processing for voice-controlled navigation, hands-free telephony, and multi-zone audio distribution. IC Role / Device Role / Timing Role: Audio subsystem controller managing 8-channel amplifier output, Bluetooth A2DP streaming, and echo cancellation via DAI-linked peripherals. Use Value: AEC-Q100 Grade 2 rating ensures operation from −40°C to +105°C; ROM security prevents firmware tampering in connected vehicle environments. |
Use Scenario: Decoding and upmixing Dolby Atmos and DTS:X object-based audio for 11.2-channel speaker systems with room correction. IC Role / Device Role / Timing Role: Dedicated audio DSP co-processor handling real-time convolution-based room EQ and speaker time alignment. Use Value: Dual DAGs enable zero-overhead circular buffers for 256-tap FIR room correction filters; 8 SPORTs interface directly to ADC/DAC arrays without FPGA bridging. |
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-21487BSWZ-3A | Same 88-lead LFCSP package and 5 Mbits RAM, but rated for 400 MHz max (vs. 450 MHz); no factory-programmed audio ROM. | Lacks Dolby/DTS decoders and lower compute ceiling - suitable for cost-sensitive pro-audio where custom firmware replaces ROM codecs. | Select when 400 MHz performance suffices and ROM-based security is not required. |
| ADSP-21489KSWZ-4A | Identical 450 MHz core and peripherals, but in 176-lead LQFP_EP package with SDRAM controller enabled (ADSP-21489BSWZ-3A's 88-lead variant disables SDRAM pins). | Supports external SDRAM expansion for large buffer storage (e.g., 3D audio object rendering), whereas BSWZ-3A relies solely on on-chip memory. | Select when >5 Mbits working memory is needed and board space permits larger package. |
Compared with ADSP-21487BSWZ-3A, ADSP-21489BSWZ-3A delivers 12.5% higher peak compute and factory-certified audio codecs; compared with ADSP-21489KSWZ-4A, it trades SDRAM expandability for compact thermal packaging - making it optimal for space-constrained, self-contained audio modules.
Availability
ADSP-21489BSWZ-3A is available at Aetrix Electronics and suitable for professional audio mixing consoles, broadcast encoders, automotive infotainment head units, and high-end home theater receivers requiring stable component supply and long-term lifecycle support.
Supply support for ADSP-21489BSWZ-3A 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 and manufacturing facilities worldwide.
The SHARC® processor family, including ADSP-21489BSWZ-3A, was engineered specifically for computationally intensive, low-latency audio signal processing - emphasizing SIMD throughput, on-chip memory bandwidth, and audio-optimized peripherals like ASRCs and S/PDIF.
FAQ
What is the maximum operating frequency of the ADSP-21489BSWZ-3A?
The ADSP-21489BSWZ-3A operates at a maximum core frequency of 450 MHz, delivering 2.7 GFLOPS in SIMD mode. This rating is guaranteed across the full industrial temperature range (−40°C to +85°C) and validated per Analog Devices' Rev. I datasheet specifications. The 450 MHz speed enables real-time execution of demanding audio algorithms such as 1024-point FFT in 20.44 μs and FIR filtering at 1.1 ns per tap.
Does the ADSP-21489BSWZ-3A include factory-programmed audio codecs in ROM?
Yes, the ADSP-21489BSWZ-3A includes 4 Mbits of mask-programmed ROM containing certified Dolby® and DTS® multichannel audio decoding and post-processing algorithms. These codecs are pre-verified for compatibility with ADSP-21489BSWZ-3A's hardware accelerators and require no external licensing - enabling immediate deployment in broadcast and consumer audio systems without custom firmware development.
Is the ADSP-21489BSWZ-3A qualified for automotive applications?
Yes, the ADSP-21489BSWZ-3A is AEC-Q100 qualified for automotive applications (Grade 2: −40°C to +105°C ambient). This qualification covers thermal cycling, humidity testing, and ESD robustness, making it suitable for infotainment head units, digital cockpit audio processors, and ADAS-related acoustic sensing subsystems where reliability under harsh environmental conditions is mandatory.
What package type and thermal characteristics does the ADSP-21489BSWZ-3A use?
The ADSP-21489BSWZ-3A uses an 88-lead LFCSP_VQ package (12 mm × 12 mm × 1.15 mm) with exposed thermal pad. Its junction-to-board thermal resistance is 12.5°C/W, enabling reliable operation at 450 MHz without forced air cooling. The package supports standard reflow profiles and is compatible with automated optical inspection (AOI) in high-volume SMT lines.
How does ROM-based security function on the ADSP-21489BSWZ-3A?
ROM-based security on the ADSP-21489BSWZ-3A prevents external code loading and restricts JTAG access unless a unique 64-bit customer key is scanned via the TDI pin during reset. When enabled, the processor boots exclusively from internal ROM and ignores external memory fetches - ensuring firmware integrity in broadcast infrastructure and automotive systems where unauthorized code injection must be physically blocked.
ADSP-21489BSWZ-3A 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:
- 5Mbit
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 1.10V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP-EP (14x14)
ADSP-21489BSWZ-3A FAQ
1.How can I place an order for ADSP-21489BSWZ-3A through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-21489BSWZ-3A 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-21489BSWZ-3A reliable?
The price and inventory of ADSP-21489BSWZ-3A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-21489BSWZ-3A is usually 5 days.
3.What payment methods are accepted for ADSP-21489BSWZ-3A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-21489BSWZ-3A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-21489BSWZ-3A?
ADSP-21489BSWZ-3A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-21489BSWZ-3A 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-21489BSWZ-3A?
For technical support, including ADSP-21489BSWZ-3A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-21489BSWZ-3A requirements.
6.How does Aetrix verify that ADSP-21489BSWZ-3A is sourced from the original manufacturer or authorized distributors?
All ADSP-21489BSWZ-3A 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-21489BSWZ-3A meets industry standards.
7.What is the process for return or replacement of ADSP-21489BSWZ-3A?
All ADSP-21489BSWZ-3A units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-21489BSWZ-3A, 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-21489BSWZ-3A part is unused and in its original packaging.
Return procedure for ADSP-21489BSWZ-3A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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