ADSP-21478BSWZ-2A

Digital Signal Processor Dsp Overview

The ADSP-21478BSWZ-2A is a high-performance 32-bit/40-bit floating-point digital signal processor (DSP) from Analog Devices, optimized for audio processing. 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 supports automotive applications via AEC-Q100 qualification and utilizes an enhanced Super Harvard Architecture for efficient data handling.

Digital Signal Processor Dsp Feature Summary

• High-performance SIMD core delivering up to 1.8 GFLOPS at 300 MHz
• On-chip memory configuration: 3 Mbits SRAM and 4 Mbits ROM
• Integrated audio peripherals including S/PDIF transceiver and Asynchronous Sample Rate Converters (ASRC)
• Factory programmed with Dolby and DTS audio decoder IP licenses

Digital Signal Processor Dsp Applications

• Automotive audio systems
• High-fidelity audio processing
• Digital signal processing requiring SIMD acceleration

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix 'B' indicates the inclusion of factory-programmed ROM with Dolby and DTS decoders. Confirm the package type corresponds to the 100-LQFP_EP variant as indicated by the 'SWZ' designation in the ordering guide. Ensure compatibility with the required voltage levels and temperature ranges specified for the automotive grade.

Digital Signal Processor Dsp Selection Notes

Select this model when 3 Mbits of internal RAM and 4 Mbits of pre-loaded audio decoder ROM are required. Choose over the ADSP-21477 if higher memory capacity is needed, or over the ADSP-21479 if the external port interface is not necessary. Verify that the 100-lead LQFP package meets the board space constraints, noting that the external port is not available in this package.

Digital Signal Processor Dsp Part Context

This component belongs to the ADSP-2147x family of SHARC processors. It shares architectural compatibility with previous SHARC generations like the ADSP-2126x and ADSP-2136x. The ADSP-21478 specifically bridges the gap between the lower-memory ADSP-21477 and the feature-rich ADSP-21479, offering a balanced solution for audio-centric applications without the external memory controller found in the BGA package variants.

Digital Signal Processor Dsp Replacement Considerations

Direct source-code compatible replacements within the same family include the ADSP-21477 (lower memory) and ADSP-21479 (higher memory and external port). For pin-compatible swaps, verify the package dimensions of the 100-LQFP_EP. Note that the ADSP-21478KSWZ-2A may differ in operating temperature range.