I am having an issue. Usually when the single board computer send the WIZ811MJ a short message through TCPIP, everything works okay. However when it send me a longer message around 800 byte, the transmission fails and the single board computer would keep on retransmit the TCPIP message.
Is this due to the WIZ811MJ not sending back an ACK packet fast enough? Under normal operation, does the WIZ811MJ send an ACK packet automatically? When does it send the ACK, under what condition? Does it wait for my MCU to send a special command?
I read in the datasheet page 25 of wiznet.co.kr/UpLoad_Files/Re … v1.2.4.pdf
What is this exactly? What is the internal Timeout mechanism?