LPC Microcontrollers中的主题 Hardware IP checksum feature removed from ethernet block https://community.nxp.com/t5/LPC-Microcontrollers/Hardware-IP-checksum-feature-removed-from-ethernet-block/m-p/573134#M18726 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by Johnny D on Wed Mar 19 04:23:05 MST 2014</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I was wondering if someone could explain this little line in the 43xx user manual?:</SPAN><BR /><SPAN>"Hardware IP checksum feature removed from ethernet block".</SPAN><BR /><BR /><SPAN>On all the (current) NXP web pages relating to the 43xx mcus, they state "10/100 Ethernet with hardware enabled TCP/IP checksum calculation". But they seem to have removed this feature.</SPAN><BR /><BR /><SPAN>So, will a 4357 do tcp/ip checksum calculations in hardware or not?</SPAN><BR /><BR /><SPAN>Many thanks,</SPAN><BR /><BR /><SPAN>John.</SPAN></BODY></HTML> Wed, 15 Jun 2016 18:56:18 GMT lpcware 2016-06-15T18:56:18Z Hardware IP checksum feature removed from ethernet block https://community.nxp.com/t5/LPC-Microcontrollers/Hardware-IP-checksum-feature-removed-from-ethernet-block/m-p/573134#M18726 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by Johnny D on Wed Mar 19 04:23:05 MST 2014</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I was wondering if someone could explain this little line in the 43xx user manual?:</SPAN><BR /><SPAN>"Hardware IP checksum feature removed from ethernet block".</SPAN><BR /><BR /><SPAN>On all the (current) NXP web pages relating to the 43xx mcus, they state "10/100 Ethernet with hardware enabled TCP/IP checksum calculation". But they seem to have removed this feature.</SPAN><BR /><BR /><SPAN>So, will a 4357 do tcp/ip checksum calculations in hardware or not?</SPAN><BR /><BR /><SPAN>Many thanks,</SPAN><BR /><BR /><SPAN>John.</SPAN></BODY></HTML> Wed, 15 Jun 2016 18:56:18 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Hardware-IP-checksum-feature-removed-from-ethernet-block/m-p/573134#M18726 lpcware 2016-06-15T18:56:18Z Re: Hardware IP checksum feature removed from ethernet block https://community.nxp.com/t5/LPC-Microcontrollers/Hardware-IP-checksum-feature-removed-from-ethernet-block/m-p/573135#M18727 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by MarcVonWindscooting on Wed Mar 19 08:52:19 MST 2014</STRONG><BR /><SPAN>I don't understand. TCP/IP is a protocol on top of Ethernet.</SPAN><BR /><SPAN>How can the Ethernet hardware know about the TCP payload checksum (without having to know pretty much about TCP)?</SPAN></BODY></HTML> Wed, 15 Jun 2016 18:56:18 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Hardware-IP-checksum-feature-removed-from-ethernet-block/m-p/573135#M18727 lpcware 2016-06-15T18:56:18Z