KSZ8765CLXIC

Controllers Overview

The KSZ8765CLXIC is a Layer 2-managed, five-port Ethernet switch manufactured by Microchip Technology. It integrates four 10/100 Mbps copper ports (Port 3 and Port 4) and two 100BASE-FX fiber ports (Port 1 and Port 2), alongside one Gigabit uplink port (Port 5). The device utilizes an 80-pin LQFP package and operates within an industrial temperature range of -40°C to +85°C. Power requirements include external LDO supplies for Analog VDDAT at 3.3V, VDDIO supporting 3.3V, 2.5V, or 1.8V, and a low 1.2V voltage for the analog and digital core.

Controllers Feature Summary

• Integrated MAC/PHY units with selectable GMII, RGMII, MII, and RMII interfaces on the Gigabit uplink port
• Non-blocking store-and-forward switch fabric with 1024-entry forwarding table and 64kb frame buffer RAM
• Advanced management capabilities including IEEE 802.1q VLAN support, QoS prioritization, and ACL rule-based filtering
• Energy-efficient power management features such as EEE, Wake-on-LAN, and per-port software power down

Controllers Applications

• Industrial Ethernet applications employing IEEE 802.3-compliant MACs
• VoIP phone systems
• Set-top boxes and game consoles
• Broadband gateways, firewalls, and VPN devices
• Wireless LAN access points combined with gateways

Controllers Procurement Notes

Verify that the specific part number suffix IC corresponds to the industrial temperature grade (-40°C to +85°C) rather than the commercial variant. Confirm the package type is the 80-pin lead-free LQFP form factor. Ensure compatibility with the required external LDO power supply voltages for the analog and digital cores during system design validation.

Controllers Selection Notes

Select this component when a managed Layer 2 switch with integrated fiber and copper PHYs is required for industrial environments. The device supports multiple CPU data interfaces via Port 5, making it suitable for complex network topologies. Consider the 64kb frame buffer and non-blocking architecture for high-performance packet delivery in cost-sensitive industrial control or networking applications.

Controllers Part Context

This component belongs to the KSZ8765CLX family of integrated Ethernet switches. The 'IC' suffix specifically denotes the industrial temperature rating variant, distinguishing it from the commercial version (KSZ8765CLXCC). Both variants share identical functional specifications and pinouts but differ in their operational temperature ranges.

Controllers Replacement Considerations

The KSZ8765CLXCC serves as the commercial-grade alternative within the same product family. Verify that the application environment remains within the 0°C to +70°C range if substituting the commercial variant for the industrial IC version.

Controllers FAQ

What are the available interface modes for the Port 5 GMAC?

The Port 5 GMAC can be configured to operate in GMII, RGMII, MII, or RMII modes.

Does the device support Energy Efficient Ethernet?

Yes, the KSZ8765CLXIC supports IEEE P802.3az Energy-Efficient Ethernet (EEE) to reduce power consumption in the LPI state.

How many VLAN groups does the switch support?

The device supports up to 128 active VLAN groups with full-range 4096 VLAN IDs compliant with IEEE 802.1q.