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Open-X™ 8M Development Kit based on the NXP i.MX8™ Processor User Guide Version 1.0
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Copyright Intrinsyc Technologies Corporation
Ethernet Connector J1400
There is one Gigabit Ethernet port on the i.MX 8MDQLQ processor. The developer can use the
Ethernet connector to send/receive the ENET signals. The Ethernet PHY of the Open-X 8M carrier
board is provided by the Qualcomm AR8031 Ethernet transceiver chip (U1400) which interfaces to
the i.MX 8M processor via standard RGMII Ethernet signals.
The processor takes care of all Ethernet protocols at the MAC layer and above. The PHY is only
responsible for the Link Layer formatting. The PHY receives the clock signal from the ENET_TXC
pin of i.MX 8MDQLQ processor.
Figure 3-23 Gigabit Ethernet RJ45 Jack J1400