ADSP-21262SBBC-150

Digital Signal Processor Dsp Overview

The ADSP-21262SBBCZ150 is a high-performance 32-bit/40-bit floating-point digital signal processor from the SHARC family, operating at a core clock rate of 150 MHz. It features a single-instruction multiple-data (SIMD) architecture with two computational units delivering 900 MFLOPS. The device integrates 2 Mbit dual-ported SRAM and 4 Mbit mask-programmable ROM containing multichannel audio decoders. Key interfaces include six full-duplex serial ports, an SPI port, a parallel port, and a Digital Application Interface (DAI) with a Signal Routing Unit (SRU). It operates on 1.2 V core and 3.3 V I/O supplies within a -40°C to 85°C temperature range in a 136-ball CSPBGA package.

Digital Signal Processor Dsp Feature Summary

• SIMD Architecture: Dual processing elements (PEX/PEY) enable 900 MFLOPS performance at 150 MHz.
• Integrated Memory: 2 Mbit dual-ported SRAM and 4 Mbit mask-programmable ROM for code and data storage.
• Digital Application Interface (DAI): Features a Signal Routing Unit (SRU), two Precision Clock Generators (PCGs), and an Input Data Port (IDP) for flexible peripheral connectivity.
• High Bandwidth I/O: Includes six serial ports, one SPI interface, one parallel port, and 22 DMA channels for zero-overhead data transfers.

Digital Signal Processor Dsp Applications

• High-performance audio processing and decoding
• Multichannel surround sound systems
• Voice recognition and speech processing
• Medical equipment signal processing
• Automotive entertainment systems

Digital Signal Processor Dsp Procurement Notes

Verify the complete part number against the manufacturer's ordering guide to confirm specific suffixes such as packaging type and temperature grade. Ensure compatibility with development tools like CrossCore Embedded Studio or VisualDSP++ for software integration. Confirm power supply requirements, specifically the separate 1.2 V core and 3.3 V I/O rails, during hardware design.

Digital Signal Processor Dsp Selection Notes

Select the ADSP-21262 over the ADSP-21261 if 2 Mbit SRAM and 22 DMA channels are required instead of 1 Mbit SRAM and 18 channels. Choose this model over the ADSP-21266 if pre-programmed audio decoder algorithms in ROM are not necessary. Ensure the system design supports the SIMD mode requirements for doubled memory bandwidth when utilizing both processing elements.

Digital Signal Processor Dsp Part Context

This component belongs to the third-generation SHARC embedded processor family, which includes the ADSP-21261 and ADSP-21266. These processors share source code compatibility with earlier ADSP-2116x and ADSP-2106x series devices in SISD mode. The ADSP-21262 specifically bridges the gap between the lower-memory ADSP-21261 and the ROM-enabled ADSP-21266.

Digital Signal Processor Dsp Replacement Considerations

The ADSP-21261 serves as a pin-compatible alternative with reduced memory (1 Mbit SRAM, 3 Mbit ROM) and fewer DMA channels (18). The ADSP-21266 offers identical memory and I/O specifications but includes additional audio decoder algorithms in the on-chip ROM. Verify assembly-level code compatibility when switching between these variants.

Digital Signal Processor Dsp FAQ

What is the maximum data rate per serial port?

At a 150 MHz core clock, each serial port can operate at a maximum data rate of 37.5 Mbits/sec, which is one-quarter of the core clock rate.

How does the Digital Application Interface (DAI) enhance flexibility?

The DAI incorporates a Signal Routing Unit (SRU) that allows software-controlled interconnection of peripherals, enabling flexible configuration of serial ports, timers, and data paths without hardware changes.

What power supplies are required for operation?

The device requires separate power supplies: 1.2 V for the internal core (VDDINT) and analog circuits (AVDD), and 3.3 V for external I/O (VDDEXT).