The ADSP-21992 is a mixed-signal DSP controller based on the ADSP-2199x DSP core, suitable for a variety of high performance industrial motor control and signal processing applications that require the combination of a high performance DSP and the mixed-signal integration of embedded control peripherals, such as analog-to-digital conversion with communications interfaces such as CAN. Target applications include industrial motor drives, uninterruptible power supplies, optical networking control, data acquisition systems, test and measurement Systems, and portable instrumentation.

The ADSP-21992 integrates the fixed-point ADSP-2199x family based architecture with a serial port, an SPI-compatible port, a DMA controller, three programmable timers, general-purpose programmable flag pins, extensive interrupt capabilities, onchip program and data memory spaces, and a complete set of embedded control peripherals that permits fast motor control and signal processing in a highly integrated environment.

The ADSP-21992 architecture is code compatible with previous ADSP-217x-based ADMCxxx products. Although the architectures are compatible, the ADSP-21992, with ADSP-2199x architecture, has a number of enhancements over earlier architectures. The enhancements to computational units, data address generators, and program sequencer make the ADSP-21992 more flexible and easier to program than the previous ADSP-21xx embedded DSPs.

Indirect addressing options provide addressing flexibility—premodify with no update, pre- and post-modify by an immediate 8-bit, twos complement value and base address registers for easier implementation of circular buffering.