Seco CCHPC-C78-C User Manual page 68

JP40 position OCP Module presence
Inserted OCP module plugged
Not inserted OCP module not plugged
JP25 position Ethernet KR PHY Mode
1-2 MDIO
2-3 I2C/MDIO
RJ45 NBase-T Ethernet #0 Connector- CN68
Pin Signal Pin Signal
1 NBASET0_MDI0+ 5 NBASET0_MDI2-
2 NBASET0_MDI0- 6 NBASET0_MDI1-
3 NBASET0_MDI1+ 7 NBASET0_MDI3+
4 NBASET0_MDI2+ 8 NBASET0_MDI3-
RJ45 NBase-T Ethernet #1 Connector- CN65
Pin Signal Pin Signal
1 NBASET1_MDI0+ 5 NBASET1_MDI2-
2 NBASET1_MDI0- 6 NBASET1_MDI1-
3 NBASET1_MDI1+ 7 NBASET1_MDI3+
4 NBASET1_MDI2+ 8 NBASET1_MDI3-
CCHPC-C78-C
CCHPC-C78-C - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.O. - Reviewed by E.S. Copyright © 2023 SECO S.p.A.
On HC78 Carrier bord, the 2-way jumper must be used to signal to the client module (through the signal
ETH0-1_PSNT#) when an OCP module is plugged on CN82 connector.
The HC78 Carrier Board is also equipped with a 3-way jumper, JP25, which indicate if the PHY
for Ethernet KR lanes can be configured only via MDIO or if I2C/MDIO is supported.
This jumper acts directly on signal EXT_MDIO_I2C_SEL of connector CN82
COM HPC client modules offer two Nbase-T Ethernet interface,
including MAC and PHY. Only the isolation magnetic (with a 1:1 turn
ratio) is required.
On the carrier board, therefore, there are two dedicated RJ-45
connectors, CN65 and CN68, with integrated magnetic, also
including Activity and Link LEDs, type CTK P/N K3T14-153-01 or
equivalent.
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