AM79C30AJC/E

Overview

The AM79C30AJC/E is a Digital Subscriber Controller (DSC) circuit manufactured by Advanced Micro Devices. It integrates an ISDN S/T-interface transceiver, D-channel LAPD processor, audio processor, and IOM-2 interface into a single CMOS chip. The device supports CCITT I-series recommendations for S and T reference points, enabling compliant terminal equipment design. Key electrical characteristics include operation with TTL-compatible logic levels and integration of codec/filter functions with A/µ selection. The component facilitates point-to-point and bus configurations for ISDN applications.

Feature Summary

• Integrates S/T-interface transceiver, D-channel LAPD processor, audio processor, and IOM-2 interface in a single chip
• Supports CCITT I.430 power-compliant terminal equipment through special operating modes
• Provides multiframe support for S- or T-interface transceiver level 1 physical layer controller
• Includes audio processing capability with programmable gain and equalization filters

Applications

• Highly-integrated terminal equipment for ISDN networks
• Terminal Equipment (TE) conforming to international CCITT standards
• Point-to-point and short/extended passive bus configurations

Procurement Notes

Verify the specific suffix 'JC/E' against official AMD documentation to confirm package type and temperature range. Ensure compatibility with required ISDN protocol software support. Confirm RoHS status and lead-free compliance if applicable for modern manufacturing environments. Cross-reference pinouts with the official datasheet to avoid interface mismatches.

Selection Notes

Select this component when designing ISDN terminal equipment requiring integrated audio processing and D-channel handling. It is suitable for applications needing CCITT I.430 compliance without external transceivers. Consider the CMOS technology and TTL compatibility for system integration. Evaluate the need for internal audio codec functions versus external solutions.

Part Context

The AM79C30A belongs to the family of ISDN data controllers developed by Advanced Micro Devices. It is functionally related to the AM79C32A, which lacks the audio processor. These chips were designed to simplify ISDN terminal designs by consolidating multiple protocol and physical layer functions into a single CMOS package, reducing board space and component count.

Replacement Considerations

The AM79C32A is a compatible alternative within the same family but excludes the audio processor features. Verify if the audio processing requirements can be handled externally if substituting with the AM79C32A. No other direct public substitutes are confirmed.