VSC7385XYV

Overview

The VSC7385XYV is a SparX-G5 integrated Gigabit Ethernet switch featuring five tri-speed copper transceivers and one RGMII/GMII interface. It operates with a 25 MHz LVTTL reference clock, utilizing a 3.3 V interface power supply and a 1.2 V core power supply in a BGA package. The device includes a 96 KB on-chip frame buffer, supports up to 8K MAC addresses and 4K VLANs, and accommodates jumbo frames up to 9.6K size. Management options include an on-chip 8051 CPU or off-chip parallel/serial interfaces.

Feature Summary

• Integrates five tri-speed copper PHYs and one RGMII/GMII interface for high-density connectivity.
• Eliminates external memory requirements through a 96 KB on-chip frame buffer.
• Supports comprehensive Layer 2 management protocols including Spanning Tree and 802.1Q VLANs.
• Enables advanced QoS via programmable classifiers and DSCP remarking for IPv4 and IPv6.

Applications

• 5-port unmanaged Gigabit Ethernet SMB/SOHO switches
• Web-managed Gigabit Ethernet SMB/SOHO switches
• 4-port LAN switch combined with a 1-port WAN broadband router

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm pinout compatibility and temperature range specifications. Ensure that the BGA package type matches the target PCB footprint design. Confirm RoHS compliance status directly from the manufacturer's datasheet before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring five integrated copper ports without external PHYs. Consider the on-chip 8051 processor if managed features are needed without an external controller. Verify that the 3.3 V I/O and 1.2 V core voltage requirements align with the system power architecture.

Part Context

The VSC7385 belongs to the SparX family of highly integrated switches designed for cost-effective network edge solutions. It shares software compatibility with other family members, facilitating migration between different port configurations. This integration reduces overall system complexity by combining switching logic with physical layer transceivers on a single die.

Replacement Considerations

Consult official Microchip SparX family documentation for verified cross-model substitutions. Ensure any replacement maintains compatible software APIs and hardware interfaces for seamless migration within the same product line.

FAQ

Does the VSC7385 require external buffer memory?

No, the device integrates a 96 KB on-chip frame buffer, eliminating the need for external memory components.

What management interfaces are supported?

It supports an internal 8051 CPU, as well as serial (RS232) and parallel CPU interfaces for fully managed applications.

Is the device compliant with IEEE 802.1Q VLAN standards?

Yes, it supports 4K VLANs compliant with the IEEE Std 802.1Q standard.