Hi Hongkai, I believe you are referring to PRU ICSSG0 Instance example running on R5F_1_0 core for EtherCAT on ICSSG0. This uses PRG0_PRU0_GPOx pins for EtherCAT. [quote userid="624520" url="~/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1483176/tmds243evm-configure-ethercat-and-standard-ethernet-based-on-industrial-comm-sdk-ind_comms_sdk_am243x_09_02_00_15"] I want to ask whether EtherCAT and Enet(ICSS) can coexist? if not, whether EtherCAT and 2*Enet(CPSW) can coexist?[/quote] The first option is possible. [quote userid="624520" url="~/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1483176/tmds243evm-configure-ethercat-and-standard-ethernet-based-on-industrial-comm-sdk-ind_comms_sdk_am243x_09_02_00_15"]but there is no PRG1_PRU1_GPO*[/quote] Are you referring that PRG1_PRU1_GPOx is not available for DUAL MAC mode in ICSSG1? Regards, Aaron
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