KSZ8864CNXC

Controllers Overview

The KSZ8864CNXC is a Layer 2 managed Ethernet switch featuring four 10/100 Mbps ports and two MAC interfaces. It integrates four MACs and two PHYs within a 64-pin QFN package. The device supports MII and RMII interfaces for CPU connectivity, providing 1.4 Gbps non-blocking bandwidth. Electrical specifications include a core voltage of 1.2V, I/O voltages of 3.3V, 2.5V, or 1.8V, and an analog supply of 3.3V. It operates within a commercial temperature range of 0°C to +70°C.

Controllers Feature Summary

• Supports IEEE 802.1q VLAN with up to 128 groups and per-port tagging options.
• Includes programmable rate limiting, broadcast storm protection, and IGMP v1/v2 snooping.
• Provides comprehensive management via SPI, I2C, and SMI/MDC/MDIO interfaces.
• Features LinkMD cable diagnostics and port mirroring capabilities.

Controllers Applications

• VoIP Phone systems
• Set-Top boxes and Game consoles
• Industrial Control networks
• SOHO Residential Gateways

Controllers Procurement Notes

Verify the specific suffix against the datasheet product identification system to confirm temperature grade and packaging type. Ensure the ordering code matches the required interface mode and operating environment before procurement.

Controllers Selection Notes

Select this component for cost-sensitive 10/100 Mbps applications requiring managed switching features. Verify that the host processor supports the required MII/RMII interface modes and control protocols like SPI or I2C.

Controllers Part Context

This part belongs to the KSZ8864 family of integrated switches. Variants such as KSZ8864CNXI cover industrial temperatures, while KSZ8864RMNUB covers automotive grades. All share pin compatibility.

Controllers Replacement Considerations

The KSZ8864RMN is a pin-compatible predecessor. For higher performance needs, consider the KSZ9897RTXC series.

Controllers FAQ

What are the available MAC interface modes?

Port 3 and Port 4 support either MII or RMII interfaces, selectable via strap pins or registers.

How is the serial bus configuration determined?

Configuration is set by PS1 and PS0 pins, supporting I2C Master, SMI, or SPI Slave modes.