The FD16R is a highly horizontally integrated, Dual Speed Hub with internal 2-port

switch/bridge and embedded buffer memory. It supports 16, 8 or 4+1 10/100M Auto sensing RMII

(Reduced Media Independent Interface) + MII ports to connect to PHYceiver directly. FD16R also support stack/ cascade bus, the implementation of high-port count architecture become easily. Totally 1K MAC addresses filtering is supported. FD16R/8R/5R can make the forwarding decision in a short time with the internal two-port switch. The FD16R / FD8R / FD5R is with a 128K bits

embedded SRAM. FD16R makes an implementation of cost-effective 10/100 Dual Speed Hub with a commercial available 10/100 Auto-Negotiation / Sensing PHYceivers easily.

FD16R changes to either Master mode with internal bridge or slave mode without internal bridge

automatically depends on the stack configuration.