SGMII to GMII Bridge - 16.2 English

1G/2.5G Ethernet PCS/PMA or SGMII LogiCORE IP Product Guide (PG047)

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16.2 English

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 Mbps or 250 Mbps 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 Ethernet 1000BASE-X PCS/PMA or SGMII Page-1 Sheet.2 Sheet.3 Sheet.4 PHY 10BASE-T 100BASE-T 1000BASE-T PHY10BASE-T100BASE-T1000BASE-T Sheet.5 Transceiver Transceiver Sheet.6 Sheet.8 Sheet.10 Sheet.11 Sheet.12 Twisted Copper Pair Twisted CopperPair Sheet.13 Sheet.14 SGMII SGMII Sheet.15 Sheet.16 Sheet.17 Tri-Mode MAC with SGMII Tri-Mode MAC with SGMII Sheet.18 Sheet.20 Sheet.22 X14486-091415 X14486-091415 Sheet.25 1G/2.5G Ethernet PCS/PMA or SGMII Core 1G/2.5G Ethernet PCS/PMA or SGMII Core Sheet.26 Internal GMII InternalGMII Sheet.27 Transceiver Interface Transceiver Interface Sheet.1 RXP/RXN RXP/RXN Sheet.34 TXP/TXN TXP/TXN Sheet.7 GMII GMII Sheet.9 Sheet.21 Sheet.23 Sheet.24 GMII_RX GMII_RX Sheet.19 GMII_TX GMII_TX Standard Arrow.35 Standard Arrow.36 Arrow Standard Right.37 Arrow Standard Right.38