Seco Smarc CSM-B79 User Manual page 50

On each connector CN27 and CN28, there are also two LEDs for each port. Left LED is bicolor (Green /Yellow) and shows 10/100 or 1000 connection: green
means 100Mbps connection, yellow means 1000Mpbs connection, when the LED is Off then 10Mpbs or no connection is available. The right LED is Green and
shows ACTIVITY presence.
These interfaces are compatible both with Gigabit Ethernet (1000Mbps) and with Fast Ethernet (10/100Mbps) Networks. They will configure automatically to work
with the existing network.
Please be aware that they will work in Gigabit mode only in case that they are connected to Gigabit Ethernet switches/hubs/routers. For the connection, cables
category Cat5e or better are required. Cables category Cat6 are recommended for noise reduction and EMC compatibility issues, especially when the length of the
cable is significant.
Gigabit Ethernet interfaces Ports #0 #1 are directly manged by the SMARC
on CSM-B79 carrier board interfaced to SERDES interfaces from SMARC
®
by the SMARC module used with the CSM-B79 carrier board, it is not a feature dependent from the carrier board itself.
Signal Description:
GBEx_MDI0+/GBEx_MDI0-: Ethernet Controller #x Media Dependent Interface (MDI) I/O differential pair #0. It is the first differential pair in Gigabit Ethernet mode, and
the Transmit differential pair in 10/100 Mbps modes.
GBEx_MDI1+/GBEx_MDI1-: Ethernet Controller #x Media Dependent Interface (MDI) I/O differential pair #1. It is the second differential pair in Gigabit Ethernet mode,
and the Receive differential pair in 10/100 Mbps modes.
GBEx_MDI2+/GBEx_MDI2-: Ethernet Controller #x Media Dependent Interface (MDI) I/O differential pair #2. It is the third differential pair in Gigabit Ethernet mode; it
is not used in 10/100Mbps modes.
GBEx_MDI3+/GBEx_MDI3-: Ethernet Controller #x Media Dependent Interface (MDI) I/O differential pair #3. It is the fourth differential pair in Gigabit Ethernet mode; it
is not used in 10/100Mbps modes.
CSM-B79
CSM-B79 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: A.R - Reviewed by S.R. - Copyright © 2021 SECO S.p.A.
®
module, while Gigabit Ethernet interfaces Ports #2 #3 are managed by PHYs Transceivers
®
module. Please notice that the effective support of this kind of interfaces depends only
50