topic AH1310- Application hints in Other NXP Products https://community.nxp.com/t5/Other-NXP-Products/AH1310-Application-hints/m-p/658325#M4557 <HTML><HEAD></HEAD><BODY><P style="margin: 0in 0in 0pt;"><SPAN style="font-size: 10pt;">Hi NXP customer support,</SPAN></P><P style="margin: 1em 0px;"><SPAN style="font-size: 10pt;">I have a question regarding AH1310- Application hints of “TJA1100 Automotive Ethernet PHY”. Section 3.4.5 Common mode termination on Page 18 indicates that “To provide some common mode termination of the channel, a split termination consisting of two resistors and a capacitor can be optionally connected to the signal lines between the coupling capacitors and the connector. For symmetry reasons the tolerance of the two resistors shall be within ±1%. The power rating of the resistors should be <STRONG style="text-decoration: underline;">higher than 0.4W</STRONG>, depending on expected RF power in the actual application.”</SPAN></P><P style="margin: 1em 0px;"><SPAN style="font-size: 10pt;">I wonder larger than 0.4W specified here for resistor is the DC power or under AC. Why this power is needed?</SPAN></P><P style="margin: 1em 0px;"><SPAN style="font-size: 10pt;">Thanks,</SPAN></P><P style="margin: 1em 0px;"><SPAN style="font-size: 10pt;">Liping</SPAN></P></BODY></HTML> Thu, 06 Apr 2017 20:20:58 GMT lipingren 2017-04-06T20:20:58Z AH1310- Application hints https://community.nxp.com/t5/Other-NXP-Products/AH1310-Application-hints/m-p/658325#M4557 <HTML><HEAD></HEAD><BODY><P style="margin: 0in 0in 0pt;"><SPAN style="font-size: 10pt;">Hi NXP customer support,</SPAN></P><P style="margin: 1em 0px;"><SPAN style="font-size: 10pt;">I have a question regarding AH1310- Application hints of “TJA1100 Automotive Ethernet PHY”. Section 3.4.5 Common mode termination on Page 18 indicates that “To provide some common mode termination of the channel, a split termination consisting of two resistors and a capacitor can be optionally connected to the signal lines between the coupling capacitors and the connector. For symmetry reasons the tolerance of the two resistors shall be within ±1%. The power rating of the resistors should be <STRONG style="text-decoration: underline;">higher than 0.4W</STRONG>, depending on expected RF power in the actual application.”</SPAN></P><P style="margin: 1em 0px;"><SPAN style="font-size: 10pt;">I wonder larger than 0.4W specified here for resistor is the DC power or under AC. Why this power is needed?</SPAN></P><P style="margin: 1em 0px;"><SPAN style="font-size: 10pt;">Thanks,</SPAN></P><P style="margin: 1em 0px;"><SPAN style="font-size: 10pt;">Liping</SPAN></P></BODY></HTML> Thu, 06 Apr 2017 20:20:58 GMT https://community.nxp.com/t5/Other-NXP-Products/AH1310-Application-hints/m-p/658325#M4557 lipingren 2017-04-06T20:20:58Z