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MPC5748G lwip ping protocol package delay

Question asked by Hanson He Employee on Mar 11, 2019
Latest reply on Mar 19, 2019 by 张 爱华



We use LWIP protocol for network communication at present, we find that the delay of our PC ping MPC5748 is higher than 1ms, and the maximum value is 8ms. As a result, the speed of TCP transmission through Ethernet can only be limited to 500KB/s. PHY chip is KSZ8081, the circuit is from the DEVKIT-MPC5748G development board.