ADSP-21061LKBZ-160

Digital Signal Processor Dsp Overview

The ADSP-21061LKBZ-160 is a commercial-grade SHARC digital signal processor from Analog Devices, operating at a maximum clock frequency of 40 MHz. It delivers 120 MFLOPS peak and 80 MFLOPS sustained performance with a 20 ns instruction cycle time. The device integrates 1 Mbit of dual-ported on-chip SRAM organized into two blocks. Key architectural features include four independent buses for simultaneous instruction and data fetches, a 32-bit IEEE floating-point computation core supporting single and extended precision formats, and integrated I/O peripherals such as serial ports and a DMA controller.

Digital Signal Processor Dsp Feature Summary

• Super Harvard Architecture with four independent buses enabling dual data fetch and instruction fetch in a single cycle.
• Integrated 1 Mbit dual-ported on-chip SRAM allowing independent access by the core processor and I/O processor/DMA.
• 32-bit IEEE floating-point computation units (ALU, multiplier, shifter) supporting 32-bit single-precision and 40-bit extended-precision formats.
• On-chip instruction cache and hardware circular buffers via dual Data Address Generators (DAGs) for efficient DSP algorithm execution.

Digital Signal Processor Dsp Applications

• High-performance communications systems requiring real-time signal processing.
• Graphics and imaging applications utilizing parallel computation capabilities.
• Multiprocessor DSP systems leveraging glueless interprocessor connectivity.

Digital Signal Processor Dsp Procurement Notes

Verify the specific speed grade and package variant against the datasheet ordering guide, as suffixes denote performance and form factor differences. Confirm RoHS compliance status for lead-free requirements. Check current product lifecycle status, as older SHARC models may be discontinued or subject to last-time buys. Ensure development tools like CrossCore Embedded Studio are compatible with the target architecture.

Digital Signal Processor Dsp Selection Notes

Select this component for applications requiring high-throughput floating-point arithmetic with low latency. The 40 MHz speed grade offers a balance between performance and power consumption compared to higher-speed variants. Consider the 225-ball PBGA package for dense board layouts. Verify that the 1 Mbit internal memory suffices for code and data storage before designing external memory interfaces.

Digital Signal Processor Dsp Part Context

The ADSP-21061LKBZ-160 belongs to the ADSP-21061 family, which supplements the earlier ADSP-21000 series. It is designed as a system-on-a-chip solution, integrating the SHARC core with substantial on-chip memory and I/O. This family maintains object code compatibility with the ADSP-21060 and ADSP-21062, facilitating migration for existing designs while offering enhanced integration and multiprocessing features.

Digital Signal Processor Dsp Replacement Considerations

The ADSP-21061 is pin-compatible with the ADSP-21060 and ADSP-21062. However, code porting requires attention to memory organization differences, specifically the column structure of the on-chip SRAM. Link port functions available in predecessors are not present on the ADSP-21061.