ADSP-21489KSWZ-5B ADI SHARC High-Performance 32/40-bit Floating-Point DSP 450MHz Commercial LQFP-100

ADSP-21489KSWZ-5B Product Overview

The ADSP-21489KSWZ-5B from Analog Devices is a high-performance 32/40-bit floating-point digital signal processor (DSP) based on the SHARC architecture, engineered for professional audio, industrial control, and real-time signal processing applications that demand higher clock speed and floating-point precision. The ADSP-21489KSWZ-5B integrates a single-core SHARC processor running at 450MHz (2.22ns instruction cycle) and provides 5Mbit of on-chip SRAM. The ADSP-21489KSWZ-5B's rich peripherals include eight full-duplex serial ports (SPORTs), eight high-performance asynchronous sample rate converters (ASRC), an S/PDIF transceiver, hardware FIR/IIR/FFT accelerators, and an external SDRAM memory interface. Housed in a 100-lead LQFP package (14mm×14mm) with a commercial temperature range of 0°C to +70°C, the 450MHz speed grade of the ADSP-21489KSWZ-5B delivers additional computational headroom for multi-channel audio algorithms and complex signal processing tasks in indoor environments.

ADSP-21489KSWZ-5B Core Features

Processor Core: The ADSP-21489KSWZ-5B features a single-core 32/40-bit floating-point SHARC architecture, 450MHz (2.22ns cycle), with SIMD engine

On-Chip Memory: The ADSP-21489KSWZ-5B provides 5Mbit of high-speed SRAM

Hardware Accelerators: The ADSP-21489KSWZ-5B includes built-in FIR, IIR, and FFT acceleration engines to significantly boost digital filtering and spectral analysis performance

ASRC: The ADSP-21489KSWZ-5B offers 8-channel stereo high-performance asynchronous sample rate converter, supporting up to 192kHz sampling rates

Serial Audio Ports: The ADSP-21489KSWZ-5B provides 8 full-duplex SPORTs, supporting I2S, TDM, and left/right-justified protocols

S/PDIF Transceiver: The ADSP-21489KSWZ-5B integrates a professional-grade digital audio transceiver

External Memory Interface: The ADSP-21489KSWZ-5B supports 16-bit SDRAM and asynchronous SRAM/Flash for large program/data requirements

General-Purpose Connectivity: The ADSP-21489KSWZ-5B includes SPI, TWI (I2C), UART, PWM, and general-purpose I/O

Package: The ADSP-21489KSWZ-5B comes in a 100-lead LQFP (14mm×14mm), commercial temperature range 0°C to +70°C

Speed Grade: The ADSP-21489KSWZ-5B is rated -5B, core clock 450MHz

ADSP-21489KSWZ-5B Applications

Professional Audio: The ADSP-21489KSWZ-5B excels in digital mixers, effects processors, studio monitors, and multi-channel amplification

Automotive Audio: The ADSP-21489KSWZ-5B handles in-vehicle DSP, active noise cancellation, and voice enhancement (cabin environment)

Industrial Instrumentation: The ADSP-21489KSWZ-5B is suitable for real-time control, vibration analysis, and sensor signal conditioning (indoor environments)

Medical Electronics: The ADSP-21489KSWZ-5B supports biopotential signal acquisition and ultrasound digital beamforming (indoor environments)

High-End Consumer: The ADSP-21489KSWZ-5B is used in A/V receivers, soundbars, and home theater processors

Test & Measurement: The ADSP-21489KSWZ-5B is ideal for audio analyzers and dynamic signal analyzers

ADSP-21489KSWZ-5B Key Advantages

Higher Clock Performance: The ADSP-21489KSWZ-5B's 450MHz SHARC core (2.22ns cycle) delivers over 900 MFLOPS peak, effortlessly handling complex real-time algorithms

Complete Audio Acceleration Suite: The ADSP-21489KSWZ-5B integrates hardware FIR/IIR/FFT accelerators and 8-channel ASRC on a single chip to handle complex audio front-end processing

Rich Audio Connectivity: The ADSP-21489KSWZ-5B's 8 SPORTs and S/PDIF transceiver natively support multi-channel I2S/TDM audio networks

Low-Latency Real-Time Processing: The ADSP-21489KSWZ-5B's SHARC architecture is optimized for signal streaming, with hardware accelerators significantly reducing processing latency

Commercial-Grade Cost Efficiency at 450MHz: Optimized for indoor 0°C to +70°C applications, the ADSP-21489KSWZ-5B offers higher DSP performance while maintaining competitive commercial-grade value

Mature Software Ecosystem: The ADSP-21489KSWZ-5B is supported by CrossCore Embedded Studio with complete audio algorithm libraries, drivers, and example code

Scalable Storage: The ADSP-21489KSWZ-5B's external SDRAM/Flash bus interface easily handles complex algorithms and multi-channel data buffering

Compact Package: The ADSP-21489KSWZ-5B's 14mm×14mm LQFP package is easy to layout and friendly for manual soldering during prototyping

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FAQ

1. What is the ADSP-21489KSWZ-5B?
   The ADSP-21489KSWZ-5B is a high-performance 32/40-bit floating-point SHARC DSP from Analog Devices, running at 450MHz with 5Mbit SRAM, 8-channel ASRC, S/PDIF transceiver, and hardware FIR/IIR/FFT accelerators. The ADSP-21489KSWZ-5B operates over the commercial temperature range of 0°C to +70°C, ideal for professional audio and signal processing demanding higher real-time throughput.
2. How does the ADSP-21489KSWZ-5B differ from the 400MHz (-4B) version?
   The key difference is the core clock: the ADSP-21489KSWZ-5B runs at 450MHz (2.22ns cycle) compared to 400MHz (2.5ns) for the -4B, delivering approximately 12.5% higher peak performance. Both parts are fully pin- and function-compatible, enabling a straightforward upgrade path for designs needing additional MIPS.
3. What are the key specifications of the ADSP-21489KSWZ-5B?
   The ADSP-21489KSWZ-5B features a single-core SHARC at 450MHz, 5Mbit on-chip SRAM, 8 SPORTs (I2S/TDM), 2 SPI, UART, S/PDIF transceiver, 8-channel 192kHz ASRC, hardware FIR/IIR/FFT accelerators, 16-bit external SDRAM/Flash interface, LQFP-100 (14mm×14mm) package, and 1.2V core/3.3V I/O supply.
4. What applications benefit from the 450MHz speed grade of the ADSP-21489KSWZ-5B?
   The ADSP-21489KSWZ-5B targets designs requiring extra computational headroom, such as multi-channel digital mixers, large audio matrices, studio effects processors, automotive audio systems with intensive ANC and sound processing, high-end AV receivers, and advanced industrial instruments.
5. What hardware accelerators are integrated in the ADSP-21489KSWZ-5B?
   The ADSP-21489KSWZ-5B includes dedicated FIR, IIR filter, and FFT acceleration engines that offload common signal processing tasks from the core, reducing MIPS usage and latency while freeing resources for more complex multi-channel algorithms.
6. Which audio protocols are supported by the ADSP-21489KSWZ-5B? How do I connect ADCs/DACs?
   All eight SPORT ports of the ADSP-21489KSWZ-5B support I2S, left/right-justified, and TDM formats, allowing direct connection to audio codecs, ADCs, and DACs. The integrated S/PDIF transceiver handles coaxial and optical digital audio I/O.
7. What development environment is required for the ADSP-21489KSWZ-5B?
   The recommended IDE for the ADSP-21489KSWZ-5B is ADI’s CrossCore Embedded Studio (CCES), an Eclipse-based environment with C/C++ and assembly tools, debugger, simulator, and extensive SHARC audio libraries. The legacy VisualDSP++ is also compatible.
8. What is the operating temperature range of the ADSP-21489KSWZ-5B? Can I use it outdoors?
   The ADSP-21489KSWZ-5B is rated for 0°C to +70°C, suitable for indoor equipment or temperature-controlled enclosures. For extended temperature requirements, select the corresponding industrial-grade version.
9. What is the role of the ASRC in the ADSP-21489KSWZ-5B?
   The 8-channel asynchronous sample rate converter of the ADSP-21489KSWZ-5B allows seamless connection of digital audio sources with different sampling rates (44.1kHz, 48kHz, 96kHz, 192kHz) without external clock synchronization or extra ASRC chips, simplifying multi-source audio system design.
10. What boot modes does the ADSP-21489KSWZ-5B support?
    The ADSP-21489KSWZ-5B can boot from external parallel Flash, SPI Flash, or SPI EEPROM, and can also be loaded by an external host processor via SPI, providing flexible program loading for different system architectures.