BCM8012S

Description

In most switch designs, a few ports are targeted as uplink ports to connect to servers, switches, or remote links. The BCM8012S can be via fiber as 1000Base-SX, 1000Base-LX, or 100Base-FX, or via copper. In order to accommodate these various interfaces, one or more SFP slots can be designed into the switch and the user can plug an SFP module into the slot that meets their specific requirement. This user configured solution enables the switch manufacturer to make one box that addresses multiple needs.

The BCM8012S addresses the specific problem of supporting multi-speed SFP uplinks in Gigabit and Fast Ethernet designs. 1000Base-SX and 1000Base-LX SFP modules require a SerDes interface to the SFP module. 100Base-FX and 10/100/1000Base-T require an SGMII interface in order to rate adapt to the lower speeds (less than 1 gigabit). The BCM8012S can switch between any of these interfaces, depending on the SFP module installed.