RTL8306M中文资料Single-Chip 6-Port 10/100Mbps Ethernet Switch Controller with MII/RMII Interface数据手册Realtek规格书

描述 Description

The RTL8306M-GR is a 6-port Fast Ethernet switch controller that integrates memory, six MACs, and five physical layer transceivers for 10Base-T and 100Base-TX operation into a single chip.
The RTL8306M supports a MII/RMII interface for external devices to connect to the 6th MAC. The external device could be a routing engine, HomePNA, HomePlug, or VDSL transceiver depending on the application. In order to accomplish diagnostics in complex network systems, the RTL8306M provides a loopback feature in each port.
The RTL8306M supports several advanced QoS functions with four-level priority queues to improve multimedia or real-time networking applications, including: Multi-priority assignment Differential queue weight Port-based and queue-based rate limitation 16-entry ACL for advanced packet control application
For multicast applications, the RTL8306M supports IGMPv1/v2/v3 and MLDv1/v2 snooping.
To meet security and management requirements, the RTL8306M supports IEEE 802.1x Port-based/MAC-based Access Control, MAC Address Limits, Port Isolation, Port Mirroring, and also supports five 32-bit MIB Counters on each port.
The RTL8306M supports 16 VLAN groups. These can be configured as port-based VLANs and/or 802.1Q tag-based VLANs. The RTL8306M also supports VLAN translation and QinQ.
The RTL8306M contains a 2K-entry address lookup table. Two 4-way associative hash algorithms avoid hash collisions and maintain forwarding performance. The 2K-entry table provides read/write access from the SMI interface, and each of the entries can be configured as a static entry that does not automatically age out and can only be controlled by the external management processor. For IGMP/MLD snooping application, each of the 2K entries can be configured as a multicast entry that indicates the matched packets will be forwarded to specific multi ports. For IEEE 802.1x application, each of the 2K entries can be configured as an authorized or unauthorized entry. Maximum packet length can be 2047 bytes. Two types of independent storm filter are provided to filter packet storms, and an intelligent switch engine prevents Head-of-Line blocking problems. The filtering function is supported for IEEE 802.1D specified reserved multicast addresses (01-80-C2-00-00-02 and 01-80-C2-00-00-04 to 01-80-C2-00-00-0F).
The RTL8306M provides flexible LED functions for diagnostics, with four combination modes. It also provides one LED to indicate all ports’ link and activity information. An externally managed processor can control the LEDs via SMI.
The RTL8306M supports Realtek’s Green Ethernet power saving mode, as well as Energy-Efficient Ethernet mode (EEE; defined in IEEE 802.3az) to minimize system power consumption. Green Ethernet Features include:
Link-On and Cable Length Power SavingThe RTL8306M provides link-on and dynamic detection of cable length and dynamic adjustment of power required for the detected cable length. This feature provides high performance with minimum power consumption. Link-Down Power SavingThe RTL8306M implements link-down power saving on a per-port basis, greatly cutting power consumption when the network cable is disconnected. Energy-Efficient Ethernet (EEE) supports Low Power Idle Mode. When Low Power Idle Mode is enabled, systems on both sides of the link can disable portions of the functionality and save power during periods of low link utilization.For whole system power saving, the RTL8306M supports the Wake-on-LAN (WOL) function and provides control signals to manage the system power based on the port linkage and the traffic loading of the CPU port.
To simplify the peripheral power circuit, the RTL8306M can use a low-cost PNP transistor to generate 1.8V from a 3.3V power supply.

特性 Features

Basic Switching Functions
6-port switch controller with memory and transceiver for 10Base-T and 100Base-TX with:

5-port 10/100M UTP
5-port 10/100M UTP + 1-port (T)MII/RMII
Supports MII/TMII/RMII for router applications, HomePNA, HomePlug, or VDSL solutions
Non-blocking wire-speed reception and transmission and non-head-of-line-blocking forwarding
Complies with IEEE 802.3/802.3u auto-negotiation
Built-in high efficiency SRAM for packet buffer, with 2K-entry lookup table and two 4-way associative hash algorithms
2047 byte maximum packet length
Flow control fully supported:

Half duplex: Back pressure flow control
Full duplex: IEEE 802.3x flow control
Service Quality
Supports high performance QoS function on each port:

Supports 4-level priority queues
Weighted round robin service
Supports strict priority
Input/Output port bandwidth control
Queue based bandwidth control
ACL-based, 1Q-based, Port-based, DSCP-based, VID-based, IP address-based, and other types of priority assignments
Supports 16-entry ACL for advanced applications
Supports IEEE 802.1p Traffic Re-marking
Supports IGMP v1/v2/v3 and MLD v1/v2 snooping
Security and Management
Supports MAC Limit
Supports Port Isolation
Supports IEEE 802.1x
Lookup Table is accessible via SMI
Supports 32-bit smart counter for per port RX/TX byte/packet count, collision counter, and error counter
Supports reserved control frame filtering
Supports advanced storm filtering
Supports Port Mirroring
Supports interrupt for CPU application
Supports proprietary CPU tag for traffic management
Supports SMI (Serial Management Interface) for programming and diagnostics
Optional EEPROM interface for configuration
VLAN Functions
Supports up to 16 VLAN groups
Flexible 802.1Q port/tag-based VLAN
Supports VLAN translation
Supports QinQ
Leaky VLAN for ARP/unicast/IP multicast packets
Supports external processor to maintain greater than 16 VLAN groups
Power Saving Functions
Green Ethernet Features

Link-On and Cable Length Power Saving
Link-Down Power Saving
Supports Energy-Efficient Ethernet (EEE) function (IEEE 802.3az)
Supports Wake-on-LAN (WOL)
Supports system power management based on link and CPU port traffic loading
Diagnostic Functions
Supports IEEE 802.1D
Supports hardware loop detection function, with LEDs to indicate the existence of a loop
Supports cable diagnosis (RTCT function)
Supports MAC and PHY loopback function for diagnosis
LED indicators:

One LED indicates all ports’ link status and activity
Loop status indication
LEDs blink upon reset for LED diagnostics
Other Features
Optional MDI/MDIX auto crossover for plug-and-play
Physical layer port Polarity Detection and Correction function
Robust baseline wander correction for improved 100Base-TX performance
25MHz crystal or 3.3V/1.8V OSC input
Single 3.3V power input can be transformed to 1.8V via a low-cost external BJT transistor
Low power, 1.8/3.3V, 0.153µm CMOS technology
64-pin QFN package

应用 Application

5-port switch (10Base-T & 100Base-TX)
xDSL/cable modem router or home gateway applications
HomePNA/HomePlug bridge solutions
Set-top box/TV