SM-C93
SM-C93 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R - Reviewed by M.B. - Copyright © 2021 SECO S.p.A.
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3.2.1.13
SERDES interface signal
The SM-C93 module can offer one optional SERDES interface, alternative to fourth PCI-e lane. The most common use for this interface is the implementation of an
additional LAN port on carrier board with SGMII interface.
Here following the signals involved in SERDES management:
SERD/ SERDES_0_TX-: Differential SERDES 0 Transmit Data Pair
SERD/ SERDES_0_RX-: Differential SERDES 0 Receive Data Pair
MDIO_CLK: MDIO Signals to Configure Possible PHYs. +1.8V_ RUN electrical level
-up resistor.
MDIO_DAT: MDIO Signals to Configure Possible PHYs. +1.8V_ RUN electrical level
-up resistor.
3.2.1.14
Gigabit Ethernet signals
Gigabit Ethernet interfaces are realized on SM-C93 module by using two TI Gigabit Ethernet PHY transceivers, which are interfaced to Intel processor through RGMII
interface.
Here following the signals involved in Gigabit Ethernet #0 management:
GB/GBE0_MDI0-: Media Dependent Interface (MDI) Transmit/Receive differential pair
GB/GBE0_MDI1-: Media Dependent Interface (MDI) Transmit differential pair
GB/GBE0_MDI2-: Media Dependent Interface (MDI) Transmit differential pair
GB/GBE0_MDI3-: Media Dependent Interface (MDI) Transmit differential pair
GBE0_LINK_ACT#: Ethernet controller activity indicator. Active Low Output signal, +3.3V_ALW electrical level
GBE0_LINK100#: Ethernet controller 100Mbps link indicator. Active Low Output signal, +3.3V_ALW electrical level
GBE0_LINK1000#: Ethernet controller 1Gbps link indicator. Active Low Output signal, +3.3V_ALW electrical level
GBE0_SDP: Software defined pin, directly managed by TI Gigabit Ethernet PHY transceiver #0. Bidirectional signal, +3.3V_ALW electrical level.
Here following the signals involved in Gigabit Ethernet #1 management:
GB/GBE1_MDI0-: Media Dependent Interface (MDI) Transmit/Receive differential pair
GB/GBE1_MDI1-: Media Dependent Interface (MDI) Transmit differential pair
GB/GBE1_MDI2-: Media Dependent Interface (MDI) Transmit differential pair
GB/GBE1_MDI3-: Media Dependent Interface (MDI) Transmit differential pair
GBE1_LINK_ACT#: Ethernet controller activity indicator. Active Low Output signal, +3.3V_ALW electrical level
GBE1_LINK100#: Ethernet controller 100Mbps link indicator. Active Low Output signal, +3.3V_ALW electrical level
GBE1_LINK1000#: Ethernet controller 1Gbps link indicator. Active Low Output signal, +3.3V_ALW electrical level
GBE1_SDP: Software defined pin, directly managed by Intel
®
Ethernet Controller I210 for Gigabit Ethernet #1
Please refer to the following schematics as an example of connection of Ethernet interface on the carrier board, with TVS diodes specifically designed to protect
