DSP features dual cores, many audio/modem channels

-- EDN, 12/7/2000

Code-compatible with the established ADSP-218X family and packing a pair of ADSP 219X cores along with direct connections to PCI- and USB-system interfaces, the ADSP2192 DSP from Analog Devices targets multichannel voice, data, and fax systems (Picture). The IC delivers performance to 320 MIPS, suitable for 26 toll-quality voice-over-network channels and six v.90 modem channels.

The onboard 132k-word RAM has 4k words of between-processor shared RAM for interprocessor communications. Each DSP core functions independently and contains a program sequencer that allows the execution of two instructions with every clock cycle, as well as a transparent instruction cache. This cache allows the core to simultaneously execute mathematical operations in every instruction cycle. The vendor offers a line of software- and hardware-development tools, emulators, code-generation kits, and simulators. An ADSP2192 costs $35 (25,000); the basic EZ-Kit Lite development system costs $295.

Analog Devices Inc, www.analog.com.

—by Bill Schweber