AD21488WBSWZ1B02

Overview

The AD21488WBSWZ1B02 is a high-performance 32-bit/40-bit floating-point digital signal processor from the SHARC family, optimized for audio processing. It features a single-instruction, multiple-data (SIMD) computational architecture with two processing elements (PEX and PEY). The device operates at a maximum instruction rate of 400 MHz and includes 5 Mbits of on-chip RAM and 4 Mbits of on-chip ROM. It supports IEEE 32-bit and 40-bit floating-point formats alongside 32-bit fixed-point operations. The processor integrates an asynchronous memory interface (AMI) and SDRAM controller for external memory access.

Feature Summary

• SIMD computational engine with dual processing elements delivering up to 2.7 GFLOPS at 450 MHz
• On-chip memory configuration of 5 Mbits RAM and 4 Mbits ROM
• Integrated audio-centric peripherals including Digital Applications Interface (DAI), S/PDIF transceiver, and Asynchronous Sample Rate Converters (ASRC)
• AEC-Q100 qualified for automotive applications

Applications

• High performance audio processing
• Automotive infotainment systems
• Medical imaging
• Communications equipment
• Speech recognition systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current data sheet to confirm package type and temperature range. Confirm availability status as supply conditions may vary. Ensure compatibility with existing development tools and software libraries designed for the SHARC family before procurement.

Selection Notes

Select this model for applications requiring high throughput in audio decoding or filtering tasks. The 400 MHz clock speed and 5 Mbit RAM support complex algorithms like FIR/IIR filters and FFTs. Consider the 176-lead LQFP_EP package for full peripheral access, including the external port and watchdog timer, which are not available in smaller packages.

Part Context

This component belongs to the ADSP-2148x family, which shares source code compatibility with previous SHARC generations such as the ADSP-2147x and ADSP-2137x. The family is characterized by its Super Harvard Architecture, allowing simultaneous instruction and data fetches. The ADSP-21488 specifically offers a balance of memory capacity and peripheral integration suitable for demanding embedded control and signal processing roles.

Replacement Considerations

Direct substitutes within the same package and pinout include other members of the ADSP-2148x family such as the ADSP-21486 or ADSP-21489, provided their clock speeds and memory configurations meet system requirements. Cross-family replacements require careful review of register maps and peripheral availability.