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Description
RTL8370N-VB-CG Product Overview
The Realtek RTL8370N-VB-CG is a high-performance, low-power 8-port Gigabit Ethernet switch controller chip from Realtek Semiconductor. Housed in an LQFP-128-EP (14×20mm) with exposed pad package， the RTL8370N-VB-CG is a highly integrated Layer 2 8-port 10/100/1000M switch controller. The RTL8370N-VB-CG features 8 low-power integrated Giga-PHYs supporting 1000Base-T, 100Base-TX, and 10Base-T. The chip adopts a single-chip 8-port gigabit non-blocking switch architecture, with embedded packet buffer SRAM and a 4096-entry lookup table, supporting full-duplex IEEE 802.3x flow control and half-duplex backpressure. The RTL8370N-VB-CG supports a rich set of Layer 2 management features including VLAN, QoS, IGMP/MLD snooping, ACL, port mirroring, and Spanning Tree Protocol (STP) . Operating at 3.3V with typical power consumption below 5W, the RTL8370N-VB-CG is an ideal core chip for home gateways, SOHO switches, enterprise Gigabit switches, and industrial network equipment.
RTL8370N-VB-CG Key Features
The RTL8370N-VB-CG embodies Realtek's deep expertise in high-performance Ethernet switch chip design. The RTL8370N-VB-CG features a single-chip 8-port gigabit non-blocking switch architecture with 8 embedded low-power Giga-PHYs, with each port supporting full-duplex 10/100/1000M connectivity (half-duplex supported in 10/100M mode). The RTL8370N-VB-CG integrates embedded packet buffer SRAM with advanced memory management technology. The chip includes a 4096-entry lookup table with a 4-way XOR hashing algorithm for address searching and learning. The RTL8370N-VB-CG supports 16 Filtering Databases (FIDs) with Independent VLAN Learning and Shared VLAN Learning (IVL/SVL) functions. The chip supports full-duplex IEEE 802.3x flow control frames and optional backpressure for half-duplex operation. The RTL8370N-VB-CG supports broadcast/multicast output dropping, forwarding broadcast/multicast packets only to non-blocking ports. For IP multicast applications, the RTL8370N-VB-CG can forward IPv4 IGMPv1/v2/v3 and IPv6 MLDv1/v2 snooping protocol packets. The RTL8370N-VB-CG supports 96 ACL rule checks with multiple action options. The RTL8370N-VB-CG supports Spanning Tree Protocol (STP) and Multiple Spanning Tree Protocol (MSTP) with 16 group configurations and four states. The RTL8370N-VB-CG supports IEEE 802.1x port-based/MAC-based access control. The RTL8370N-VB-CG features 1 port mirroring group, capable of mirroring traffic from any switch port. The RTL8370N-VB-CG supports 8 priority assignment methods for each received packet and 8 priority queues with weighted ratio configuration per output port. The RTL8370N-VB-CG provides a 4096-entry VLAN table supporting 802.1Q port-based, tag-based, and protocol-based VLAN operations. The chip supports 4 protocol-based VLAN configuration groups. The RTL8370N-VB-CG also supports dynamic port aggregation, traffic control, multicast/broadcast storm control, and security features including MAC address filtering and port security. The RTL8370N-VB-CG incorporates advanced energy-saving technologies with port auto-power-down and low-power standby modes.
RTL8370N-VB-CG Applications
With its highly integrated 8-port Gigabit switching capability, rich Layer 2 management features, and low-power design, the RTL8370N-VB-CG is widely deployed in various networking applications. The RTL8370N-VB-CG is an ideal core chip for 8-port Gigabit unmanaged/light-managed Ethernet switches. The RTL8370N-VB-CG is suitable for home gateways, SOHO switches, and enterprise Gigabit switches. In industrial automation control systems, the RTL8370N-VB-CG meets high reliability and real-time requirements. The RTL8370N-VB-CG is also applicable to video surveillance systems, providing high-speed data transmission for multi-channel video streams. Additionally, the RTL8370N-VB-CG can be used in Network Attached Storage (NAS) devices, wireless routers, and other networking products requiring multi-port Gigabit switching functionality.
RTL8370N-VB-CG Key Advantages
The RTL8370N-VB-CG stands out as a mature, commercially available 8-port Gigabit Ethernet switch controller chip that strikes an excellent balance between performance, features, and cost. Housed in an LQFP-128-EP (14×20mm) package with exposed pad, the RTL8370N-VB-CG integrates 8 low-power Giga-PHYs and a complete switching engine, enabling a complete 8-port Gigabit switch solution with a single chip and significantly reducing BOM cost and PCB footprint. The RTL8370N-VB-CG supports a rich set of Layer 2 management features including VLAN, QoS, IGMP/MLD snooping, ACL, port mirroring, STP/MSTP, and 802.1x access control, meeting diverse requirements from SOHO to enterprise applications. The RTL8370N-VB-CG features advanced energy-saving technology with typical power consumption below 5W, supporting port auto-power-down and low-power standby modes, making it an ideal choice for green networking equipment. The RTL8370N-VB-CG offers system integrators and OEMs a highly competitive 8-port Gigabit switching solution.
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FAQs:
1 What is the RTL8370N-VB-CG chip
It is a highly integrated 8 port Gigabit Ethernet switch controller from Realtek which integrates 8 Gigabit Ethernet PHY layers and MAC controllers internally.
2 How many Ethernet ports does it support
This chip provides 8 independent Gigabit Ethernet ports making it suitable for building 8 port network switching devices.
3 What package and pin count does it use
It uses an LQFP-128 package with 128 pins which is a standard thin quad flat package offering rich pins and easy soldering.
4 What network speeds does it support
Each port supports auto negotiation of 10Mbps 100Mbps and 1000Mbps speeds and is fully compatible with IEEE 802.3 standards.
5 What are the operating voltage and temperature ranges
The chip uses multiple voltage domains typically with a core supply of 1 point 2 volts and IO supply of 3 point 3 volts. The commercial temperature range is from zero degrees Celsius to plus 70 degrees Celsius.
6 What built in functions does it have
It features a complete switching management system supporting VLAN partitioning port based QoS priority IGMP snooping and port mirroring functions.
7 What application scenarios is it suitable for
It is widely used in SOHO Gigabit switches enterprise Gigabit routers smart network gateways and expansion devices for industrial automation networks.
8 How to configure and manage this chip
It typically supports management interfaces such as SMI I2C or SPI buses allowing an external host microcontroller or CPU to read and write registers and configure parameters.
9 What are the PCB design suggestions for the LQFP-128 package
As the chip handles multiple high speed differential signals during operation the PCB routing must strictly control 100 ohm impedance matching and equal length routing for the 8 Ethernet ports and decoupling capacitors should be placed near the power pins.
10 Does it support low power and green features
It supports the IEEE 802.3az Energy Efficient Ethernet standard which allows real time adjustment of port power consumption based on network traffic effectively reducing overall energy consumption under light loads or idle states.