Renesas Starter Kit+ for RZ/T2M 5. User Circuitry
R20UT4939EG0100 Rev. 1.00 Page 25 of 87
Apr 20, 2022
5.12 Ethernet
When running any Ethernet software, a unique MAC address should be used. A unique Renesas allocated MAC
address is attached to the PCB as a sticker and should always be used with this device to ensure full compatibility
when using other Renesas hardware on a common Ethernet connection.
Three Ethernet PHY ICs are fitted to the CPU board and are connected to the MPU Ethernet peripherals. The
RZ/T2M MPU supports half and full duplex, 10Mb/s and 100Mb/s and 1000Mb/s transmission and reception.
Refer to section 5.4 Ethernet LEDs. The connections for the Ethernet controller are listed in Table 5-15, Table
5-16, Table 5-17, Table 5-18, Table 5-19 below.
Note that Ethernet port 2 cannot be used at the same time as SDRAM.
Table 5-15: Ethernet Connections (ETH0)
Ethernet signal Function
RGMII: Transmit clock output
RGMII: Transmit data enable / Transmit data error
RGMII: Receive clock input
RGMII: Receive data valid / Receive data error
Outputs 25MHz clock for EtherPHY0
Table 5-16: Ethernet Connections (ETH1)
Ethernet signal Function
RGMII: Transmit clock output
RGMII: Transmit data enable / Transmit data error
RGMII: Receive clock input
RGMII: Receive data valid / Receive data error
Outputs 25MHz clock for EtherPHY1
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