Product Overview
The KSZ8863RLL from Microchip Technology is a 3-port 10/100 managed Ethernet switch IC with two integrated 10/100BASE-T/TX PHY transceivers and one RMII MAC interface. It features QoS packet prioritization, per-port power management, and Rapid Spanning Tree Protocol support in a 48-pin LQFP package.
Key Specifications
- Port Configuration: 2x 10/100BASE-T/TX PHY + 1x RMII MAC interface
- Switching: 3-port managed switch
- Speed: 10/100 Mbps
- MAC Interface: RMII (Reduced MII)
- Management: SPI / I2C / SMI (MDC/MDIO)
- QoS: 4 priority queues, IPv6 classification
- RSTP: Rapid Spanning Tree Protocol support
- VLAN: Port-based and 802.1Q tag-based
- MIB: RMON and MIB counters per port
- Rate Limiting: Per-port ingress and egress
- Power Management: Software power-down, per-port power-down, energy detect mode
- Bypass Mode: Keeps switching alive when host sleeps
- Internal LDO: Yes (single 3.3V supply)
- I/O Voltages: 1.8V, 2.5V, 3.3V
- Cable Diagnostics: LinkMD (TDR-based)
- Operating Temperature: -40°C ~ 85°C (industrial)
- Package: 48-LQFP (7x7mm)
Features
- Fully integrated 3-port switch with 2 PHYs and RMII uplink
- Managed switch features: QoS, VLAN, RSTP, rate limiting
- IPv6 priority classification support
- Internal LDO for single 3.3V supply operation
- Energy detect mode for green power savings
- Bypass mode for host processor sleep
- LinkMD cable diagnostics
- Comprehensive MIB counters for network monitoring
Applications
- VoIP phones and IP-PBX
- Industrial Ethernet switches
- Set-top boxes and IPTV
- Residential gateways
- Automotive Ethernet