Teledyne LeCroy QPHY-USB - Manual (Page 41)

QPHY-USB Software Option
QPHY-USB Operator’s Manual Rev F
41
Figure 43. Hub downstream repeater sync field truncation and corruption
The USB 2.0 specification allows the synchronization field at the output of a hub to be up to 4 bits shorter than the
input.
Figure 44. Hub downstream repeater end of packet dribble
The USB 2.0 specification allows the end of packet (EOP) field at the output of a hub to be up to 4 bits shorter
than the input.