The RTL8306E-CG is a 6-port Fast Ethernet switch controller that integrates memory, 6 MACs and five physical layer transceivers for 10Base-T and 100Base-TX operation into a single chip. The RTL8306E supports a dual MII/RMII interface for external devices to connect to the 6th MAC, 5th MAC and 5th PHY. The external device can be a Routing Engine, Home PNA, Home Plug or VDSL transceiver depending on the application. To complete diagnostics in complex network systems, the RTL8306E provides a loopback function in each port.

feature:

Basic switching function

1. Support dual MII/RMII for router app, HomePNA, HomePlug or VDSL solution.

Sixth MAC provides MII, TMII or RMII

Fifth MAC provides MII or RMII

Fifth PHY provides MII or RMII

2. Non-blocking wire-speed reception and transmission and wireless head blocking forwarding

3. Compliant with IEEE 802.3/802.3u auto-negotiation

4. Built-in high-efficiency SRAM for packet buffer with 2K entry lookup table and two 4-way associative hash algorithms

5.2047 bytes maximum packet length

Basic function description

The RTL8306E supports two MII/RMII interfaces for use with various routing engines and one MII/RMII interface for use with HomePNA, HomePlug or VDSL transceivers, as shown in Figure 3 on page 28. The RTL8306E supports dual MII/RMII interfaces for external devices to connect to the 6th MAC, 5th MAC and 5th PHY. The external device can be a Routing Engine, HomePNA, HomePlug or VDSL transceiver, depending on the application. The fifth PHY also supports external MII or RMII interface pins connected to an external MAC. MII/RMII 2 can be used in Turbo MII (TMII) mode for the 6th MAC. The signals and protocols of Turbo-MII are exactly the same as MII, except that the clock rate of Turbo-MII is twice that of MII, that is, the transmit/receive bandwidth of Turbo-MII is twice that of MII.