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ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176
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ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176

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ADSP-21489BSWZ-3B Product Overview

The ADSP-21489BSWZ-3B is a high-performance 32-bit floating-point SHARC digital signal processor from Analog Devices, supplied in an LQFP-176 package. Operating over the commercial temperature range of 0°C to +70°C, the ADSP-21489BSWZ-3B features a fourth-generation SHARC core running at 350 MHz, delivering up to 1400 MFLOPS peak floating-point performance for demanding audio algorithms, industrial control, medical imaging, and high-speed measurement tasks. The ADSP-21489BSWZ-3B integrates 5 Mbit of internal SRAM (3 Mbit program RAM + 2 Mbit data RAM) and provides an external memory interface supporting 16-bit SDRAM, asynchronous SRAM, and FLASH expansion for large programs and data buffers. Peripherals include four SPORT serial interfaces (compatible with I2S, TDM, and other audio protocols), two SPI ports, a UART, 16 general-purpose I/O pins, and multiple timers. With ADI’s VisualDSP++ or CrossCore Embedded Studio development environment, engineers can quickly develop and debug algorithms. The ADSP-21489BSWZ-3B is widely used in high-end professional audio effects, digital mixers, automotive audio DSP, instrumentation, and a variety of embedded signal processing systems requiring powerful floating-point computation.


ADSP-21489BSWZ-3B Core Features

Processor Core: The ADSP-21489BSWZ-3B features a 4th-gen SHARC 32-bit floating-point DSP, 350 MHz (2.86 ns cycle).

Floating-Point Performance: The ADSP-21489BSWZ-3B delivers 1400 MFLOPS peak.

Internal Memory: The ADSP-21489BSWZ-3B provides 5 Mbit SRAM (3 Mbit program RAM + 2 Mbit data RAM).

External Memory Interface: The ADSP-21489BSWZ-3B supports 16-bit SDRAM, async SRAM, FLASH.

Serial Peripherals: The ADSP-21489BSWZ-3B includes 4× SPORT (I2S/TDM capable), 2× SPI.

Other Peripherals: The ADSP-21489BSWZ-3B offers UART, 16 GPIOs, timers.

DMA Controller: The ADSP-21489BSWZ-3B incorporates a multi-channel DMA for efficient data transfer.

Power Supply: The ADSP-21489BSWZ-3B operates with 1.2 V core / 3.3 V I/O.

Package: The ADSP-21489BSWZ-3B comes in an LQFP-176 (24×24 mm).

Temperature Range: The ADSP-21489BSWZ-3B operates over 0°C to +70°C (commercial).


ADSP-21489BSWZ-3B Applications

High-End Professional Audio: The ADSP-21489BSWZ-3B excels in digital reverbs, multi-band equalizers, dynamics processors, guitar effects, digital mixers.

Automotive Audio DSP: The ADSP-21489BSWZ-3B handles active noise cancellation, multi-channel audio signal processing, engine noise elimination.

Industrial Instrumentation: The ADSP-21489BSWZ-3B enables real-time spectral analysis, vibration monitoring, harmonic measurement, industrial control.

Medical Equipment: The ADSP-21489BSWZ-3B supports portable ultrasound, ECG/EEG signal processing front ends (indoor environments).

General Floating-Point DSP: The ADSP-21489BSWZ-3B is ideal for control and data acquisition systems requiring high-speed floating-point computation.


ADSP-21489BSWZ-3B Key Advantages

Powerful Floating-Point Performance: The ADSP-21489BSWZ-3B's 350 MHz SHARC core delivers 1400 MFLOPS for complex algorithms.

Large On-Chip SRAM: The ADSP-21489BSWZ-3B's 5 Mbit internal memory reduces reliance on external memory, boosting system efficiency.

Flexible External Memory: The ADSP-21489BSWZ-3B's SDRAM/FLASH interface suits large programs and data buffers.

Audio-Optimized Interfaces: The ADSP-21489BSWZ-3B provides 4 SPORTs with I2S/TDM directly connecting to multiple ADCs/DACs/codecs.

Rich Serial Peripherals: The ADSP-21489BSWZ-3B's dual SPI + UART enable easy connectivity to MCUs, wireless modules, or debug terminals.

Easy Development: The ADSP-21489BSWZ-3B is supported by VisualDSP++/CrossCore Studio providing a complete toolchain and optimized libraries.

Classic SHARC Family: The ADSP-21489BSWZ-3B is a mature 4th-gen architecture with proven global deployment and stable supply.


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ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS 5Mb SRAM SPORT SPI LQFP-176 ADSP-21489BSWZ-3B ADI SHARC Floating-Point DSP 350MHz 1400MFLOPS SPORT SPI LQFP-176




FAQ:

  1. What is the floating-point performance of the ADSP-21489BSWZ-3B, and how should I interpret 700 MFLOPS?
    The ADSP-21489BSWZ-3B's SHARC core runs at 350 MHz and can perform one multiply-accumulate (MAC) per cycle, which corresponds to two floating-point operations (one multiplication and one addition). This yields a peak performance of 2 × 350 MHz = 700 MFLOPS, easily handling 128-tap FIR filters, real-time FFTs, and complex audio effects.

  2. How much internal memory does this chip have? Is it enough for complex algorithms?
    The ADSP-21489BSWZ-3B integrates 5 Mbit of SRAM (3 Mbit program RAM and 2 Mbit data RAM). This is sufficient for many common audio tasks like multi-band EQ, reverb, and dynamics processing. For larger programs, the ADSP-21489BSWZ-3B's external memory interface can add SDRAM and FLASH.

  3. What audio interfaces does it have, and can it directly connect to ADCs and DACs?
    The ADSP-21489BSWZ-3B provides four SPORTs (synchronous serial ports), each configurable for I2S, TDM, or left/right-justified modes. These ports connect directly to multi-channel audio ADCs, DACs, or codecs without additional conversion hardware, making the ADSP-21489BSWZ-3B ideal for multi-channel audio products.

  4. How does the ADSP-21489BSWZ-3B compare to the 21488 or 21479 families?
    The ADSP-21489BSWZ-3B shares the same fourth-generation SHARC core and 5-Mbit memory architecture. The primary differences are clock speed and package: the ADSP-21489BSWZ-3B offers 350 MHz, while the 21488 features 400 MHz, and the 21479 is available at 266 MHz. Choose the ADSP-21489BSWZ-3B for a balanced mix of performance and LQFP-176 packaging.

  5. What software and tools are needed to develop for this DSP?
    You can use ADI’s CrossCore Embedded Studio (CCES) or the classic VisualDSP++ to develop for the ADSP-21489BSWZ-3B. Both provide a C/C++ compiler, debugger, and highly optimized DSP libraries. Extensive application notes and reference examples are available on the ADI website to accelerate development of the ADSP-21489BSWZ-3B.

  6. What is the operating temperature range? Is it suitable for industrial or outdoor use?
    The ADSP-21489BSWZ-3B operates over the commercial temperature range of 0°C to +70°C, which is well-suited for indoor audio equipment, instrumentation, and consumer electronics. For -40°C to +105°C operation, choose an industrial-temperature version of the ADSP-21489BSWZ-3B series.

  7. Can the four SPORTs handle four stereo I2S streams simultaneously, and how many channels are possible?
    Yes. Each SPORT of the ADSP-21489BSWZ-3B can be configured as a stereo I2S port (left and right channels), giving you four stereo inputs/outputs (eight audio channels). Using TDM mode, the ADSP-21489BSWZ-3B can carry even more channels, enabling larger multi-channel systems.

  8. Can I build a complete digital mixer or effects processor with it?
    Absolutely. With 700 MFLOPS of processing power, four SPORTs, and SPI/UART connectivity, a single ADSP-21489BSWZ-3B can handle parametric EQ, compression, delay, reverb, and many other effects, while communicating with a host MCU or display over SPI or UART for a complete user interface.

  9. How do I store and load the program? Does it have internal flash?
    The ADSP-21489BSWZ-3B does not contain non-volatile memory. You need to connect an external SPI flash memory to store the program. The ADSP-21489BSWZ-3B automatically boots from the SPI flash at power-up, and JTAG can be used for development and debugging.

  10. I am new to DSP development. What is the quickest way to get started with an audio project?
    We recommend starting with an official ADI evaluation board (e.g., ADZS-21489-EZLITE) compatible with the ADSP-21489BSWZ-3B. Combined with CrossCore Embedded Studio and the many audio example projects provided by ADI, you can run your first audio effect within a day and then gradually integrate your own algorithms targeting the ADSP-21489BSWZ-3B.

Property:
Specification
Product Type:
SHARC 32-bit Floating-Point DSP
Brand:
Analog Devices
Processor Core:
4th-gen SHARC, 350 MHz (2.86 ns cycle)
Floating-Point Performance:
1400 MFLOPS peak
Internal SRAM:
5 Mbit (3 Mbit program + 2 Mbit data)
External Memory Interface:
Supports 16-bit SDRAM/async SRAM/FLASH
Serial Interfaces:
4× SPORT (I2S/TDM), 2× SPI
Package:
LQFP-176 (24×24 mm)
Temperature:
0°C to +70°C
Power Supply:
1.2 V core / 3.3 V I/O
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