Protocol analysis
R&S
®
RTE
837User Manual 1326.1032.02 ─ 20
since the remaining CRC16 cannot be computed. The trigger instant is on the CRC5
error.
Figure 13-103: USB high-speed protocol: decoded and binary signal, and decode results
green brackets [...] = start and end of packet
blue packet = packet ok
green packet = data packet ok
red packet = error condition
yellow = PID
dark blue = address
blue = endpoint
purple = CRC5/16
grey = payload data bytes
The example in Figure 13-104 shows a simulated USB HSIC sequence, in which Data
(ch1) and Strobe (ch2) are combined. A Token OUT packet, a DATA0 packet with an
erroneous CRC16 value and a STALL packet have been decoded. The next events are
a Token SETUP packet with erroneous CRC5 value, and a Token IN packet. In this
scenario, the trigger instant is on the SOP (start of packet).
USB (option R&S RTE-K60)
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