CCOMe-C79
CCOMe-C79 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by E.S. Copyright © 2021 SECO S.p.A.
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COM Express Type 7 modules offer a Gigabit Ethernet interface,
including GbE MAC and PHY. Only the isolation magnetic (with a 1:1
turn ratio) is required.
On the carrier board, therefore, there is a GbE RJ-45 connector
CN23 with integrated magnetic, also including Activity and Link LEDs,
type TRXCOM P/N TRJG16414A4NL or equivalent.
On this connector there are also two bicolour Green/Yellow LEDs: LED1 (Left LED) 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. LED2 (Right LED) shows ACTIVITY
presence.
This interface is compatible both with Gigabit Ethernet (1000Mbps) and with Fast Ethernet (10/100Mbps) Networks. It will configure automatically to work with the
existing network.
Please be aware that it will work in Gigabit mode only in case that it is 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.
Signals Description:
GB/GBE0_MDI0-: Ethernet Controller #0 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.
GB/GBE0_MDI1-: Ethernet Controller #0 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.
GB/GBE0_MDI2-: Ethernet Controller #0 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.
GB/GBE0_MDI3-: Ethernet Controller #0 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.
RJ45 Gigabit Ethernet Connector- CN23
Pin Signal
Pin Signal
1
GB
5
GBE0_MDI2-
2
GBE0_MDI0-
6
GBE0_MDI1-
3
GB
7
GB
4
GB
8
GBE0_MDI3-
