MPC8308: RGMII (eTSEC1) at 3.3V? or only 2.5V?

[jmaccedian]

We're using the MPC8308. There is a confusion between the datasheet and some schematic about the supply for the eTSEC1 in RGMII mode. Can we connect the eTSEC1 at 3.3V in RGMII mode? or it's only 2.5V? LV_DD1 = NV_DDC = TSEC1 = ? in RGMII mode

JMAccedian

[andrei_skok]

According to the MPC8308 Datasheet:

"The RGMII interface is defined for 2.5 V, while the MII interface can be operated at 3.3 V"

If you use eTSEC1 in RGMII mode you should connect LVDD1 (NVDDC) to 2,5V.