DS2167

Digital Signal Processor Dsp Overview

The DS2167 is a dedicated digital signal processor (DSP) CMOS chip optimized for Adaptive Differential Pulse Code Modulation (ADPCM) based compression algorithms. It halves the transmission bandwidth of toll-quality voice from 64K to 32 bits/second and is utilized in PCM-based telephony networks. The device contains a high-performance 10 MIPS DSP engine, two independent PCM data interfaces (X and Y) connecting directly to serial time division multiplexed (TDM) backplanes, and a microcontroller-compatible serial port for on-the-fly device configuration. A 10MHz master clock is required by the DSP engine.

Digital Signal Processor Dsp Feature Summary

• Dual independent channel architecture supporting full duplex, 2-channel expansions, or 2-channel compressions
• Supports new T1Y1 recommendations (July 1986) and new CCITT G.721 recommendations
• Interconnects directly with µ-law or A-law codec/filter devices
• Hardware mode allows stand-alone use without a host processor

Digital Signal Processor Dsp Applications

• Voice mail applications
• PCM-based telephony networks
• Stand-alone ADPCM combo applications

Digital Signal Processor Dsp Procurement Notes

Verify component authenticity through authorized channels as this part may be obsolete. Confirm package type availability, specifically 24-pin DIP or 28-pin PLCC options. Check RoHS compliance status if environmental regulations apply to the target assembly. Ensure supply chain stability due to potential discontinuation.

Digital Signal Processor Dsp Selection Notes

Select the DS2167 over the DS2168 when compatibility with new T1Y1 and new CCITT G.721 recommendations is required. Choose the hardware mode for systems lacking a host controller. Ensure the design accommodates a 10 MHz master clock input. Verify interface compatibility with existing µ-law or A-law codecs.

Digital Signal Processor Dsp Part Context

The DS2167 belongs to the DS2167/DS2168 family of ADPCM processors manufactured by Analog Devices Inc./Maxim Integrated. It serves as a specialized DSP solution for reducing voice bandwidth in telecommunications infrastructure. The device complements other interface and processing components within the manufacturer's portfolio for telephony system design.

Digital Signal Processor Dsp Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.