CS8920A-CQ

Controllers Overview

The CS8920A-CQ is a Crystal LAN ISA plug-and-play Ethernet controller manufactured by Cirrus Logic Inc. It integrates an IEEE 802.3 compliant 10 Base-T PHY with a bus interface, housed in a 144-pin TQFP package measuring 20x20 mm. The device supports operational temperatures from 0°C to 70°C and functions as a standalone network interface solution for legacy systems requiring ISA connectivity.

Controllers Feature Summary

• Integrates IEEE 802.3 compliant 10 Base-T physical layer transceiver
• Provides ISA bus interface for direct system integration
• Supports plug-and-play configuration capabilities

Controllers Applications

• Legacy computer systems requiring ISA expansion
• Industrial control equipment with older bus architectures
• Embedded network interfaces for vintage hardware restoration

Controllers Procurement Notes

Verify component authenticity due to obsolete status. Confirm package integrity and pin alignment before installation. Check datasheet revisions for any historical specification updates. Ensure compatibility with existing ISA bus voltage levels and timing requirements.

Controllers Selection Notes

Select this component only for systems specifically designed around the ISA bus architecture. Evaluate mechanical fit within the 144-TQFP footprint. Consider thermal management within the specified 0°C to 70°C range. Assess if modern alternatives are viable for new designs.

Controllers Part Context

Part of the Cirrus Logic Crystal LAN series, designed for cost-effective Ethernet connectivity in legacy environments. Represents a transition period component bridging early networking standards with established bus interfaces. Widely used in PC-compatible systems during the late 1990s and early 2000s.

Controllers Replacement Considerations

Public confirmed substitute part numbers: None identified in available documentation. The component is listed as obsolete/discontinued. No direct equivalent replacements are documented in official sources.