Hello: USB 3 has many implimentations: Which one?
USB 3.2 Gen 1×1 – SuperSpeed, 5 gigabits per second (Gbit/s) data signaling rate over 1 lane using 8b/10b encoding (effective 500 MB/s) , the same as USB 3.1 Gen 1 and USB 3.0.
USB 3.2 Gen 2×1 – SuperSpeed+,[56] 10 gigabits per second (Gbit/s) data rate over 1 lane using 128b/132b encoding (effective 1,212 MB/s), the same as USB 3.1 Gen 2.
USB 3.2 Gen 1×2 – SuperSpeed+, new 10 gigabits per second (Gbit/s) data rate over 2 lanes using 8b/10b encoding (effective 1 GB/s).
USB 3.2 Gen 2×2 – SuperSpeed+, new 20 gigabits per second (Gbit/s) data rate over 2 lanes using 128b/132b encoding (effective 2,424 MB/s).
The USB standards are easily found:
https://www.usb.org/documents Good overview at the wiki:
https://en.wikipedia.org/wiki/USB_3.0Like all transmission of digital data, it is binary data but analog design of transmission, with defined levels, risetimes, hysterysis, etc, see for instance the old RS232 and RS485 differential TX and RX.
After you determine the speeds and which version, suggest to check out the excellent gigaherz layout and guidelines of Dr Howard Johnson: eg High Speed Digital Design: A Handbook of Black Magic
Good Luck,
Jon