R&S RTO6 - Page 846

Protocol analysis
R&S
®
RTO6
846User Manual 1801.6687.02 ─ 05
We try to represent the structure of these frames. However, one single table that con-
tains all frames and all fields would be very large: 30 by 40 cells. W
e have therefore
split up the full table into the following four smaller tables:
●
T
able 13-36 contains the short frames that end with the "Link Control Word". (This
table uses abbreviation, see below.)
●
Table 13-37 contains the long frames that end with the "Link Control Word". (This
table uses abbreviation, see below.)
●
Table 13-38 contains the frames that do not end with the "Link Control Word".
These frames have no additional fields other than those in the table.
●
Table 13-39 contains the types that are no specified USB 3.1 frames.
The frames in both Table 13-36 and Table 13-37 are abbreviated. For the full set of
fields, you must add to each frame the 2 fields "HPSTART" and "Type" in the beginning
of the frame. Also add a "CRC" field and the 6 fields of the "Link Control Word" at the
end of each frame. In Table 13-39, only the "Link Control Word" is abbreviated.
The 2-byte "Link Control Word" is used for both link level and end-to-end flow con-
trol. The fields in the Link Control Word are detailled in Table 13-37.
Table 13-36: Short frames that start with fields HPSTART and Type and end with CRC and the Link Control Word
Frame Field3 Field4 Field5 Field6 Field7 Field8 Fld.9 Field10 Fld.11
Bus Interval Adjust-
ment
Rsvd Device Address SubType NotType Rsvd BusIntAdj Rsvd
Function Wake Rsvd Device Address SubType NotType Interface Rsvd Rsvd
Host Role Request Rsvd Device Address SubType NotType RSP Rsvd Rsvd
ITP Counter Delta Adj Ctrl Corr Rsvd Rsvd
Latency Tolerance Rsvd Device Address SubType NotType BELT Rsvd Rsvd
Link Delay Mea-
surement
SubType LDM Type LDMS Rsvd Response
Delay
Rsvd Rsvd
NRDY Rsvd Device Address SubType Rsvd D EPTNum Rsvd StreamId Rsvd
PING Route String Device Address SubType Rsvd D EPTNum Rsvd Rsvd
PING_RESPONSE Rsvd Device Address SubType Rsvd D EPTNum Rsvd Rsvd
Port Configuration SubType Link Speed Rsvd Rsvd Rsvd
Port Configuration
Response
SubType Response Code Rsvd Rsvd Rsvd
STALL Rsvd Device Address SubType Rsvd D EPTNum Rsvd Rsvd
Set Link Function SubType SLF Rsvd Rsvd Rsvd
U2 Inactivity Time-
out
SubType U2 IT Rsvd Rsvd Rsvd
Vendor Device Test SubType VDT Rsvd Vendor
Def ... for fields no. 1, 2 and n+x see T
able 13-37
USB 3.1 (option R&S RT
O6-K570)