The following figure shows a typical application for the core, where the core is
providing a SGMII to GMII bridge using a device-specific transceiver to provide the
serial interface. Operation in 2.5G SGMII mode is similar to 1G SGMII mode. Data rates
of 25 Mb/s or 250 Mb/s are not supported for the 2.5G SGMII interface.
The device-specific transceiver is connected to an external off-the-shelf
Ethernet MAC device that also supports 1G or 2.5G SGMII. (This can be the AMD Tri-Mode Ethernet MAC core connected to the
1G/2.5G Ethernet PCS/PMA or SGMII core operating in GMII to SGMII mode).
The GMII core interface is connected to a tri-mode or 2.5G PHY, providing
10BASE-T, 100BASE-T, and 1000BASE-T operation.
Figure 1. Typical Application for SGMII to GMII Bridge Mode