ADSP-21489KSWZ-4B ADI SHARC High-Performance 32/40-bit Floating-Point DSP 400MHz Commercial LQFP-100

ADSP-21489KSWZ-4B Product Overview

The ADSP-21489KSWZ-4B from Analog Devices is a high-performance 32/40-bit floating-point digital signal processor (DSP) based on the SHARC architecture, designed for professional audio, advanced industrial control, and real-time signal processing applications demanding high-precision floating-point computation. The ADSP-21489KSWZ-4B integrates a single-core SHARC processor operating at up to 400MHz and provides 5Mbit of on-chip SRAM. The ADSP-21489KSWZ-4B features rich peripherals including 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 ADSP-21489KSWZ-4B offers a cost-optimized solution for indoor audio and industrial signal processing systems.

ADSP-21489KSWZ-4B Core Features

Processor Core: The ADSP-21489KSWZ-4B features a single-core 32/40-bit floating-point SHARC architecture, up to 400MHz, with SIMD engine

On-Chip Memory: The ADSP-21489KSWZ-4B provides 5Mbit of high-speed SRAM

Hardware Accelerators: The ADSP-21489KSWZ-4B includes built-in FIR, IIR, and FFT acceleration engines to significantly boost digital filtering and spectral analysis performance

ASRC: The ADSP-21489KSWZ-4B offers 8-channel stereo high-performance asynchronous sample rate converter, supporting up to 192kHz sampling rates

Serial Audio Ports: The ADSP-21489KSWZ-4B provides 8 full-duplex SPORTs, supporting I2S, TDM, and left/right-justified protocols

S/PDIF Transceiver: The ADSP-21489KSWZ-4B integrates a professional-grade digital audio transceiver

External Memory Interface: The ADSP-21489KSWZ-4B supports 16-bit SDRAM and asynchronous SRAM/Flash for large program/data requirements

General-Purpose Connectivity: The ADSP-21489KSWZ-4B includes SPI, TWI (I2C), UART, PWM, and general-purpose I/O

Package: The ADSP-21489KSWZ-4B comes in a 100-lead LQFP (14mm×14mm), commercial temperature range 0°C to +70°C

Speed Grade: The ADSP-21489KSWZ-4B is rated -4B, core clock 400MHz

ADSP-21489KSWZ-4B Applications

Professional Audio: The ADSP-21489KSWZ-4B excels in digital mixers, effects processors, studio monitors, and amplification processing

Automotive Audio: The ADSP-21489KSWZ-4B handles in-vehicle DSP, active noise cancellation, and voice enhancement

Industrial Instrumentation: The ADSP-21489KSWZ-4B is suitable for real-time control, vibration analysis, and sensor signal conditioning (indoor environments)

Medical Electronics: The ADSP-21489KSWZ-4B supports biopotential signal acquisition and ultrasound digital beamforming (indoor environments)

High-End Consumer: The ADSP-21489KSWZ-4B is used in A/V receivers, soundbars, and home theater processors

Test & Measurement: The ADSP-21489KSWZ-4B is ideal for audio analyzers and dynamic signal analyzers

ADSP-21489KSWZ-4B Key Advantages

Superior Floating-Point Performance: The ADSP-21489KSWZ-4B delivers wide dynamic range and high precision through its 32/40-bit floating-point, eliminating fixed-point scaling headaches

Complete Audio Acceleration Suite: The ADSP-21489KSWZ-4B 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-4B features 8 SPORTs and an S/PDIF transceiver that natively support multi-channel I2S/TDM audio networks

Low-Latency Real-Time Processing: The ADSP-21489KSWZ-4B employs the SHARC architecture optimized for signal streaming, with hardware accelerators significantly reducing processing latency

Commercial-Grade Cost Efficiency: Optimized for 0°C to +70°C indoor applications, the ADSP-21489KSWZ-4B delivers the same processing power as the industrial variant at a more competitive cost point

Mature Software Ecosystem: The ADSP-21489KSWZ-4B is supported by CrossCore Embedded Studio with complete audio algorithm libraries, drivers, and example code

Scalable Storage: The ADSP-21489KSWZ-4B provides an external SDRAM/Flash bus interface that easily handles complex algorithms and multi-channel data buffering

Compact Package: The ADSP-21489KSWZ-4B'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-4B?
   The ADSP-21489KSWZ-4B is a high-performance 32/40-bit floating-point SHARC DSP from Analog Devices, running at 400MHz with 5Mbit SRAM, 8-channel ASRC, S/PDIF transceiver, and hardware FIR/IIR/FFT accelerators. The ADSP-21489KSWZ-4B operates over the commercial temperature range of 0°C to +70°C, making it ideal for indoor professional audio and signal processing. The ADSP-21489KSWZ-4B is a cost-effective solution for demanding audio applications.
2. What is the difference between ADSP-21489KSWZ-4B and ADSP-21489BSWZ-4B?
   The two parts are functionally and pin-for-pin identical. The only difference is the operating temperature range: the ADSP-21489KSWZ-4B is commercial grade (0°C to +70°C) while the ADSP-21489BSWZ-4B is industrial grade (-40°C to +85°C). Choose the ADSP-21489KSWZ-4B for indoor applications where a cost-optimized solution is desired.
3. What are the key specifications of the ADSP-21489KSWZ-4B?
   The ADSP-21489KSWZ-4B features a single-core SHARC at 400MHz (5ns cycle), 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 SDRAM/Flash interface, LQFP-100 (14mm×14mm) package, 1.2V core/3.3V I/O. The ADSP-21489KSWZ-4B handles complex signal processing efficiently.
4. What audio applications is the ADSP-21489KSWZ-4B suitable for?
   The ADSP-21489KSWZ-4B is targeted at professional and high-end consumer audio equipment such as digital mixing consoles, audio matrix processors, studio effects, AV receivers, soundbars, home theater processors, and automotive audio DSP with active noise cancellation. The ADSP-21489KSWZ-4B ensures high-quality audio processing in these systems.
5. What hardware accelerators are built into the ADSP-21489KSWZ-4B?
   The ADSP-21489KSWZ-4B includes dedicated FIR, IIR filter, and FFT acceleration engines. The ADSP-21489KSWZ-4B uses these accelerators to offload common signal processing tasks from the DSP core, reducing MIPS utilization and latency, and freeing up resources for more complex multi-channel algorithms.
6. Which audio protocols does the ADSP-21489KSWZ-4B support? How do I connect ADCs/DACs?
   All eight SPORT ports of the ADSP-21489KSWZ-4B support standard I2S, left/right-justified, and TDM audio formats, allowing direct connection to audio codecs, ADCs, and DACs. The ADSP-21489KSWZ-4B interfaces seamlessly with these components. The integrated S/PDIF transceiver handles coaxial and optical digital audio I/O.
7. What development environment is required for the ADSP-21489KSWZ-4B?
   ADI's CrossCore Embedded Studio (CCES) is the recommended IDE for the ADSP-21489KSWZ-4B, featuring C/C++ and assembly tools, a debugger, simulator, and extensive SHARC-optimized audio algorithm libraries. The classic VisualDSP++ environment is also compatible with the ADSP-21489KSWZ-4B.
8. What is the operating temperature range of the ADSP-21489KSWZ-4B? Can I use it outdoors?
   The ADSP-21489KSWZ-4B is rated for 0°C to +70°C, making it suitable for indoor equipment or systems with temperature-controlled enclosures. For extended temperature applications, consider the industrial-grade ADSP-21489BSWZ-4B (-40°C to +85°C).
9. What is the function of the ASRC in the ADSP-21489KSWZ-4B?
   The 8-channel asynchronous sample rate converter of the ADSP-21489KSWZ-4B enables seamless connection of digital audio sources with different sampling rates (e.g., 44.1kHz, 48kHz, 96kHz, 192kHz) without external clock synchronization or additional ASRC chips. The ADSP-21489KSWZ-4B simplifies multi-source audio system design.
10. What boot modes does the ADSP-21489KSWZ-4B support?
    The ADSP-21489KSWZ-4B can boot from external parallel Flash, SPI Flash, or SPI EEPROM. The ADSP-21489KSWZ-4B can also be loaded by an external host processor via SPI, providing flexible program loading options for different system architectures.