ADSP-21478KSWZ-1A

Digital Signal Processor Dsp Overview

The ADSP-21478KSWZ-1A is a high-performance 32-bit/40-bit floating-point digital signal processor from Analog Devices, operating at up to 300 MHz. It features a Single-Instruction, Multiple-Data (SIMD) computational architecture with two processing elements (PEX and PEY). The device includes 3 Mbits of on-chip RAM and 4 Mbits of factory-programmed ROM containing Dolby and DTS audio decoders. It utilizes the Super Harvard Architecture for efficient data handling and supports Variable Instruction Set Architecture (VISA) for code optimization.

Digital Signal Processor Dsp Feature Summary

• 300 MHz SIMD SHARC core with dual processing elements
• 3 Mbits internal SRAM and 4 Mbits internal ROM
• Audio-centric peripherals including S/PDIF transceiver and ASRCs
• Digital Applications Interface (DAI) and Digital Peripheral Interface (DPI)
• Variable Instruction Set Architecture (VISA) support

Digital Signal Processor Dsp Applications

• High-performance audio processing
• Medical imaging systems
• Communications equipment
• Test and measurement instruments

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix 'KSWZ-1A' against the manufacturer's current ordering guide to confirm package type (LQFP), temperature range, and revision status. Ensure compatibility with existing design files if replacing older revisions. Check for automotive qualification requirements if applicable, as standard and automotive versions may differ in reliability specifications.

Digital Signal Processor Dsp Selection Notes

Select this model for applications requiring up to 300 MHz processing speed and significant on-chip memory for complex algorithms. The 4 Mbits of ROM is suitable for embedding licensed audio codecs directly into the firmware. Consider the 100-lead LQFP package constraints regarding external port availability compared to larger packages.

Digital Signal Processor Dsp Part Context

This component belongs to the ADSP-2147x family, which also includes the ADSP-21477 and ADSP-21479. These processors share architectural similarities but differ in memory capacity and peripheral configurations. The ADSP-21478 specifically offers a middle-ground memory configuration between the 2 Mbit RAM of the 21477 and the 5 Mbit RAM of the 21479.

Digital Signal Processor Dsp Replacement Considerations

Direct replacements within the same family include the ADSP-21477 (lower memory) or ADSP-21479 (higher memory). Verify pinout compatibility and memory map differences when substituting. Other SHARC family members like the ADSP-2146x are source-code compatible but may lack specific audio peripherals.