ADM6918XABT1

Overview

The ADM6918/X is an 18-port 10/100 Mbps Ethernet Switch Controller designed for low-cost ether-switch applications. It features sixteen SS-SMII ports and two MII/RMII ports, supporting full-duplex switching at non-blocking wire speed. The device utilizes a proprietary store-and-forward architecture with embedded SRAM for buffer management. It supports up to 4096 MAC addresses via 4-way hashing and provides QoS through port-based, 802.1p, and IP TOS priority mechanisms. Configuration is handled via hardware settings, EEPROM, or SMI interface.

Feature Summary

• Supports flexible port trunking for fault tolerance and load balancing
• Provides per-port smart counters for Rx/Tx byte/packet and error statistics
• Enables rate-limit control and broadcast storm filtering
• Integrates PHY management capabilities via MDC/MDIO interface

Applications

• Low-cost standalone Ethernet switches
• Network bridge implementations
• Server stacking connections

Procurement Notes

Verify the specific ordering suffix against Infineon documentation to confirm package type and environmental compliance. Confirm availability status as older components may have limited supply chains. Ensure the design accommodates the required 3.3V and 1.8V power domains specified in the datasheet.

Selection Notes

Select this controller when an 18-port solution with mixed SS-SMII and MII interfaces is required. Consider the 128-pin QFP package constraints for PCB layout. Evaluate the need for VLAN support and QoS features against application traffic patterns before finalizing the component choice.

Part Context

This component belongs to the ADM6918 family of Ethernet switch controllers. It serves as a high-performance, low-cost solution for bridging network segments. The 'X' variant denotes the environmentally friendly green package version. It is distinct from other Infineon networking chips by its specific port count and interface mix.

Replacement Considerations

Check for updated ordering information directly from Infineon. No direct public substitute part numbers are listed in the provided documentation. Verify pin compatibility and register map if considering alternative vendors.