Spezifikationen
RTL8367S‑CG is a Layer 2+ managed 5+2 port Gigabit Ethernet switch controller developed by Realtek Semiconductor, integrating five built-in 10/100/1000BASE-T PHY transceivers, non-blocking switching fabric and on-chip packet buffer SRAM within a single chip.
Part Number Explanation
RTL8367S stands for the core model with two independent extended GMAC interfaces supporting serial deserializer communication. CG represents the LQFP-128 leaded package with exposed thermal pad, and factory standard packing is tape-and-reel for automated SMT mounting.
Core Port & Protocol Specifications
The chip contains five copper Ethernet ports with integrated Gigabit PHY circuits, fully compliant with IEEE 802.3, 802.3u, 802.3ab and IEEE 802.3az Energy Efficient Ethernet standards. All ports support auto-negotiation of transmission rate and duplex mode, full duplex is available at 10M, 100M and 1000M speed levels while half duplex only works under 10M and 100M modes. Every port embeds Auto-MDI/MDIX function to automatically correct cable pin assignment without manual distinction between straight-through and crossover cables. Two extended MAC interfaces are reserved for flexible configuration. One can be set as RGMII or MII to connect main processor or Wi-Fi SoC, and the other supports SGMII and HSGMII to link fiber optical transceivers for optical network expansion. It adopts wire-speed non-blocking forwarding and store-and-forward mechanism, supporting jumbo frame up to 9216 bytes. An on-chip 2K-entry MAC address lookup table supports automatic address learning, aging and static binding, with multiple VLAN learning modes to improve network segmentation performance.
Advanced Management & QoS Functions
It supports port-based VLAN, 802.1Q tagged VLAN, port isolation, broadcast and multicast storm suppression. Up to 96 ACL rule entries are configurable to implement packet filtering, traffic redirection, priority marking and access control based on layer 2, layer 3 and layer 4 packet information. 8-level hardware QoS queuing mechanism classifies data priority according to port identifier, 802.1p tag and DSCP field to guarantee low latency transmission for voice and video services. Additional built-in features include port mirroring, ingress and egress bandwidth rate limiting, spanning tree protocol to prevent layer 2 loops, and cable diagnostic function to detect cable short, open and length issues. System parameters can be loaded automatically from external EEPROM after power-up, and register configuration and status reading can be realized via SMI, MIIM and SPI host management interfaces.
Power Supply and Clock Design
The device uses 3.3V as main I/O power supply, and internal embedded LDO generates dedicated core voltage to simplify peripheral power circuit layout. Only a single external 25MHz passive crystal oscillator is required as system reference clock. Multiple power saving modes are designed to cut power consumption when ports are disconnected or stay in idle state. Programmable LED pins are assigned for each port to indicate link status, connection speed and data activity.
Package and Mechanical Information
Package form is 128-pin LQFP quad flat leaded package with exposed thermal pad. Moisture Sensitivity Level is MSL 3, and reflow soldering must be completed within 168 hours after opening the vacuum moisture-proof package. The bottom exposed pad reduces thermal resistance effectively to ensure stable heat dissipation under long-term high-load data forwarding.
Environmental and Compliance Requirements
Operating ambient temperature ranges from 0 ℃ to +70 ℃. The product is lead-free and fully compliant with RoHS and REACH regulations without restricted hazardous substances. Optimized EMC design enhances anti-interference capability to adapt to consumer network equipment and light industrial control network scenarios.
Typische Anwendungsbereiche
Managed 5-port and 8-port desktop Gigabit switches and industrial rack-mounted Ethernet switches Home wireless routers, broadband gateways and IPTV set-top box main switching unit NVR video recorders and multi-channel IP camera monitoring host network processing core Smart building wiring systems, intelligent gateway protocol conversion equipment and embedded multi-port network expansion boards Fiber-copper hybrid access network devices and small enterprise office network distribution equipment
LXB Semicon supplies original Realtek RTL8367S‑CG Layer 2+ managed Gigabit Ethernet switch IC
