ADSP-21261SKSTZ150

Digital Signal Processor Dsp Overview

The ADSP-21261SKSTZ150 is a SHARC® digital signal processor operating at a 150 MHz core instruction rate, corresponding to a 6.67 ns instruction cycle time. It features a single-instruction multiple-data (SIMD) architecture with two computational units supporting 32-bit fixed-point and 32/40-bit floating-point arithmetic. The device integrates 1 Mbit of dual-ported SRAM and 3 Mbits of mask-programmable ROM. Key peripherals include four full-duplex serial ports, one SPI interface, an input data port, three programmable timers, and 18 DMA channels. It utilizes a Digital Application Interface (DAI) managed by a Signal Routing Unit (SRU) for flexible I/O configuration.

Digital Signal Processor Dsp Feature Summary

• 150 MHz SIMD SHARC core delivering 900 MFLOPS performance
• Integrated 1 Mbit SRAM and 3 Mbits mask-programmable ROM
• Digital Application Interface (DAI) with Signal Routing Unit (SRU)
• Four full-duplex serial ports and 18 DMA channels

Digital Signal Processor Dsp Applications

• High-performance audio processing
• Audio decoders and postprocessor algorithms
• Multichannel surround sound decoding

Digital Signal Processor Dsp Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature range. Ensure compatibility with required development tools such as CrossCore Embedded Studio or VisualDSP++. Confirm power supply requirements for VDDINT, VDDEXT, and AVDD pins during hardware design.

Digital Signal Processor Dsp Selection Notes

Select this model when a 150 MHz clock speed is sufficient for the application, offering a cost-effective alternative to the 200 MHz variants. Choose the ADSP-21261 over the ADSP-21262 if the application requires 1 Mbit of SRAM and 3 Mbits of ROM rather than the larger memory capacities available in other family members.

Digital Signal Processor Dsp Part Context

This component belongs to the third-generation SHARC family, which includes the ADSP-21262 and ADSP-21266. These processors share source code compatibility at the assembly level with previous generations like the ADSP-21160 and ADSP-2106x. The ADSP-21261 specifically provides reduced memory resources compared to its siblings while maintaining the same high-performance SIMD computational engine.

Digital Signal Processor Dsp Replacement Considerations

The ADSP-21262SKSTZ150 offers identical processing performance but includes 2 Mbit SRAM and 4 Mbits ROM. The ADSP-21266SKSTZ150 adds preprogrammed audio decoder algorithms to its ROM. Verify pinout and memory requirements before substituting.