VSC7390XHO

Overview

The VSC7390XHO is a 24-port integrated Layer-2 Gigabit Ethernet smart switch featuring 48 tri-speed copper transceivers and 16 SGMII ports. It provides non-blocking wire-speed performance with 4500 kb on-chip frame buffer, supporting jumbo frames up to 12.2 k. The device operates at a 25-MHz clock with a 3.3 V interface supply and 1.2 V core supply. It includes an on-chip V-Core CPU for managed applications, supports IEEE 802.1Q VLANs, 802.1D/w/s spanning tree protocols, and offers DSCP remarking for IPv4/IPv6.

Feature Summary

• Integrates 48 tri-speed copper PHYs and 16 SGMII interfaces within a single chip
• Includes an on-chip V-Core CPU enabling fully managed web-switch capabilities
• Supports advanced QoS through programmable classifiers and DSCP remarking
• Provides comprehensive security features including 802.1X authentication

Applications

• 24-Port Unmanaged Gigabit Ethernet SMB/SME/SOHO Switch
• 24-Port Web-Managed Smart Gigabit Ethernet SMB/SME/SOHO Switch
• LAN Edge Products requiring standard priority generation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature range. Ensure compatibility with required management software licenses if utilizing the on-chip CPU. Confirm power supply requirements match the 3.3 V and 1.2 V rails specified in the technical documentation before finalizing procurement.

Selection Notes

Select this component for designs requiring high port density with integrated copper PHYs to minimize external components. It is suitable for applications needing both unmanaged simplicity and managed flexibility via the internal CPU. Consider thermal dissipation characteristics of the PBGA package when designing the PCB layout for optimal reliability.

Part Context

The VSC7390 belongs to the SparX-G24 family within the Vitesse SparX series of switches. This family emphasizes high integration and low power consumption, allowing for easy migration between different port counts and configurations. Software written for one member can often be ported to others, facilitating design reuse across product lines.

Replacement Considerations

Check for updated revisions or successor models in the SparX family that may offer enhanced features or improved availability. Verify pin-to-pin compatibility if substituting directly into existing hardware designs.