topic Receive FIFO for ENET of i.MX6 in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/Receive-FIFO-for-ENET-of-i-MX6/m-p/336638#M45890 <HTML><HEAD></HEAD><BODY><P>Dear All,</P><P></P><P>Would you teach about receive FIFO registers for ENET of MX6?</P><P></P><P>We are referring to the following.</P><P>IMX6DQRM.pdf(Rev2)<BR /> - Table 23-130. Receive FIFO thresholds definition(P.1189)</P><P></P><P>We understand that it is necessary to make each register field the following relations.</P><P>RSEM &gt; RSFL &gt; RAEM</P><P></P><P>These default values are as follows.</P><P> - RSEM = 0x084<BR /> - RSFL = 0x010<BR /> - RAEM = 0x008</P><P></P><P>However, in these values, performance is low.<BR />If these values are changed as follows, performance will go up.</P><P> - RSEM = 0x040<BR /> - RSFL = 0x078<BR /> - RAEM = 0x070</P><P></P><P>We do not understand the reason which performance goes up with these values.</P><P><BR />Is the set value to RSFL a value containing RAEM?<BR />Or, Is the set value to RSFL added value from RAEM?</P><P>Would you teach which understanding is right? </P><P><BR />We would like to set Receive FIFO as 64KByte.<BR />Can this value be set as Receive FIFO?<BR />Since the maximum of each field is 0x1FF, 64kByte seems not to be set.</P><P></P><P>Best Regards,<BR />Yuuki Murasato</P></BODY></HTML> Mon, 20 Oct 2014 11:42:20 GMT yuuki 2014-10-20T11:42:20Z Receive FIFO for ENET of i.MX6 https://community.nxp.com/t5/i-MX-Processors/Receive-FIFO-for-ENET-of-i-MX6/m-p/336638#M45890 <HTML><HEAD></HEAD><BODY><P>Dear All,</P><P></P><P>Would you teach about receive FIFO registers for ENET of MX6?</P><P></P><P>We are referring to the following.</P><P>IMX6DQRM.pdf(Rev2)<BR /> - Table 23-130. Receive FIFO thresholds definition(P.1189)</P><P></P><P>We understand that it is necessary to make each register field the following relations.</P><P>RSEM &gt; RSFL &gt; RAEM</P><P></P><P>These default values are as follows.</P><P> - RSEM = 0x084<BR /> - RSFL = 0x010<BR /> - RAEM = 0x008</P><P></P><P>However, in these values, performance is low.<BR />If these values are changed as follows, performance will go up.</P><P> - RSEM = 0x040<BR /> - RSFL = 0x078<BR /> - RAEM = 0x070</P><P></P><P>We do not understand the reason which performance goes up with these values.</P><P><BR />Is the set value to RSFL a value containing RAEM?<BR />Or, Is the set value to RSFL added value from RAEM?</P><P>Would you teach which understanding is right? </P><P><BR />We would like to set Receive FIFO as 64KByte.<BR />Can this value be set as Receive FIFO?<BR />Since the maximum of each field is 0x1FF, 64kByte seems not to be set.</P><P></P><P>Best Regards,<BR />Yuuki Murasato</P></BODY></HTML> Mon, 20 Oct 2014 11:42:20 GMT https://community.nxp.com/t5/i-MX-Processors/Receive-FIFO-for-ENET-of-i-MX6/m-p/336638#M45890 yuuki 2014-10-20T11:42:20Z