Q&A

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No. 1877	Re: Is transformer needed?	2023-03-10

Dear Customer, Thank you for the inquiry. We suppose that you are going to connect CSE-M53G to multiple Ethernet devices via RTL8309N. Although this may be technically possible, it is not the normal use case that CSE-M53G is designed for, so we can not guarantee that it works nor give any advice about it. We are sorry for the inconvenience. Best Regards, > Krzysztof Bieda-Sawicki wrote: > ------------------------------------ > Dear Sirs, I build circuit where I have multiple Ethernet endpoints and that is why I place RTL8309N on the PCB ( That is second PCB I build with that IC and previous works fine). I wonder if I need to put SM91071AL_E transformer between RTL8309N and CSE-M53G. Both will be on the same PCB with the same ground. See attached piece of schematic. Regards, Chris