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The USB data lines D+ and D- are a differential pair [1], cables should definitely be twisted. On PCBs they need to be length-matchef, too. [1]: http://www.usb
by unwind 7y ago
The USB data lines D+ and D- are a differential pair [1], cables should definitely be twisted. On PCBs they need to be length-matchef, too.
[1]: http://www.usbmadesimple.co.uk/ums_2.htm http://www.usbmadesimple.co.uk/ums_2.htm
- zokier 7y agoRighto, that was me going quite wrong. Doesn't change the overall point though, 10baset still requires twice as many conductors as usb, because it needs two pairs (rx and tx) whereas usb only needs one