ADSP-21266SKSTZ-1D

Digital Signal Processor Dsp Overview

The ADSP-21266SKSTZ-1D is a high-performance 32-bit/40-bit floating-point digital signal processor from Analog Devices, optimized for audio processing. Operating at a core instruction rate of 200 MHz with a 5 ns cycle time, it delivers up to 1200 MFLOPS using its SIMD computational architecture. The device integrates 2 Mbit dual-ported SRAM and 4 Mbit mask-programmable ROM containing multichannel surround sound decoders. It features six full-duplex serial ports, an SPI interface, a parallel port, and a Digital Application Interface (DAI) with a Signal Routing Unit (SRU). Power supplies include 1.2 V for internal/analog domains and 3.3 V for external I/O.

Digital Signal Processor Dsp Feature Summary

• SIMD Architecture: Two processing elements (PEX/PEY) enable double throughput for math-intensive algorithms.
• Integrated Memory: 2 Mbit on-chip SRAM and 4 Mbit mask-programmable ROM with preprogrammed audio decoders.
• High Bandwidth I/O: Six serial ports, SPI, parallel port, and DAI with SRU for flexible peripheral connectivity.
• Zero-Overhead DMA: 22 DMA channels facilitate data transfers without processor intervention.

Digital Signal Processor Dsp Applications

• Audio decoders supporting PCM, Dolby Digital, DTS, AAC, and WMA-Pro formats.
• Postprocessor algorithms for multichannel surround sound systems.
• High-performance audio processing in cost-sensitive consumer electronics.

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix '1D' against the manufacturer's current ordering guide to confirm pinout, package type, and temperature range specifications. Ensure compatibility with development tools such as CrossCore Embedded Studio or VisualDSP++ for software integration.

Digital Signal Processor Dsp Selection Notes

Select this model over the ADSP-21261 or ADSP-21262 if 2 Mbit SRAM and 4 Mbit ROM are required. The ADSP-21266 provides 22 DMA channels and six serial ports, whereas the ADSP-21261 offers only 18 DMA channels and four serial ports. Confirm that the 200 MHz performance meets system latency requirements.

Digital Signal Processor Dsp Part Context

This component belongs to the SHARC family of DSPs, which are source code compatible with the ADSP-21160, ADSP-21161, and first-generation ADSP-2106x processors in SISD mode. It shares architectural features with the ADSP-2136x and ADSP-2116x SIMD SHARC family members.

Digital Signal Processor Dsp Replacement Considerations

The ADSP-21261 and ADSP-21262 are part of the same family but differ in memory size and peripheral counts. Verify functional equivalence regarding memory capacity and I/O availability before substitution.

Digital Signal Processor Dsp FAQ

What audio decoding algorithms are included in the on-chip ROM?

The ROM contains decoders for PCM, AC-3, DTS 96/24, AAC (LC), WMAPRO 7.1, MPEG2 BC 2ch, Noise, DPL2x/EX, and Neo:6/ES.

How does the SIMD mode affect data bandwidth?

Entering SIMD mode doubles the bandwidth requirement between memory and the processing elements to sustain computational operations, transferring two data values with each memory access.

What are the power supply requirements?

The device requires 1.2 V for internal (VDDINT) and analog (AVDD/AVSS) supplies, and 3.3 V for external (VDDEXT) supplies.