wuchy143
Member
Hi All,
I'm desinging a USB hub which will be going through a lot of EMI testing and have a couple questions.
From USB.org I found this design manual: https://www.usb.org/developers/docs/hs_usb_pdg_r1_0.pdf but could not find the low speed version. They are clearly just using chokes on the data lines and they even give P/N's for viable chokes. Problem is I can't find one for low speed devices. Does anyone know how different(if at all) low speed chokes are implemented?
I'm desinging a USB hub which will be going through a lot of EMI testing and have a couple questions.
From USB.org I found this design manual: https://www.usb.org/developers/docs/hs_usb_pdg_r1_0.pdf but could not find the low speed version. They are clearly just using chokes on the data lines and they even give P/N's for viable chokes. Problem is I can't find one for low speed devices. Does anyone know how different(if at all) low speed chokes are implemented?