topic MPC8308: RGMII (eTSEC1) at 3.3V? or only 2.5V? in PowerQUICC Processors https://community.nxp.com/t5/PowerQUICC-Processors/MPC8308-RGMII-eTSEC1-at-3-3V-or-only-2-5V/m-p/259541#M426 <HTML><HEAD></HEAD><BODY><P>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? <SPAN style="font-size: 11.0pt; font-family: 'Calibri','sans-serif';">LV<SUB>DD1</SUB> = NV<SUB>DDC</SUB> = TSEC1 = ? in RGMII mode</SPAN></P><P><SPAN style="font-size: 11.0pt; font-family: 'Calibri','sans-serif';"><BR /></SPAN></P><P><SPAN style="font-size: 11.0pt; font-family: 'Calibri','sans-serif';">JMAccedian<BR /></SPAN></P></BODY></HTML> Thu, 12 Dec 2013 22:38:25 GMT jmaccedian 2013-12-12T22:38:25Z MPC8308: RGMII (eTSEC1) at 3.3V? or only 2.5V? https://community.nxp.com/t5/PowerQUICC-Processors/MPC8308-RGMII-eTSEC1-at-3-3V-or-only-2-5V/m-p/259541#M426 <HTML><HEAD></HEAD><BODY><P>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? <SPAN style="font-size: 11.0pt; font-family: 'Calibri','sans-serif';">LV<SUB>DD1</SUB> = NV<SUB>DDC</SUB> = TSEC1 = ? in RGMII mode</SPAN></P><P><SPAN style="font-size: 11.0pt; font-family: 'Calibri','sans-serif';"><BR /></SPAN></P><P><SPAN style="font-size: 11.0pt; font-family: 'Calibri','sans-serif';">JMAccedian<BR /></SPAN></P></BODY></HTML> Thu, 12 Dec 2013 22:38:25 GMT https://community.nxp.com/t5/PowerQUICC-Processors/MPC8308-RGMII-eTSEC1-at-3-3V-or-only-2-5V/m-p/259541#M426 jmaccedian 2013-12-12T22:38:25Z Re: MPC8308: RGMII (eTSEC1) at 3.3V? or only 2.5V? https://community.nxp.com/t5/PowerQUICC-Processors/MPC8308-RGMII-eTSEC1-at-3-3V-or-only-2-5V/m-p/259542#M427 <HTML><HEAD></HEAD><BODY><P>According to the MPC8308 Datasheet:</P><P>"The RGMII interface is defined for 2.5 V, while the MII interface can be operated at 3.3 V"</P><P>If you use eTSEC1 in RGMII mode you should connect LVDD1 (NVDDC) to 2,5V.</P></BODY></HTML> Fri, 13 Dec 2013 05:35:12 GMT https://community.nxp.com/t5/PowerQUICC-Processors/MPC8308-RGMII-eTSEC1-at-3-3V-or-only-2-5V/m-p/259542#M427 andrei_skok 2013-12-13T05:35:12Z