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Timing
USB differential data timing

Figure 141: USB differential data

USB full speed load timing

Figure 142: USB full speed load

U1
10%
90% 90%
10%
U2
usb_dp
usb_dm
CL = 50pf
RS
usb_dp
CL = 50pf
RS
usb_dm
Full Speed Buffer
Rs - external resistor