Commands Listed in Alphabetical Order
Related Commands
TRIGger:A:BUS
:B<x>:USB:SPECIALType
Arguments
NOCARE — trigger on either the start or complete phase of the split transaction.
SSPLIT — trigger on the start phase of the split transaction.
CSPLIT — trigger on the complete phase of the split transaction.
Examples
TRIGger:A:BUS:B1:USB:SPLit:SC:VALue SSPLIT specifies to trigger on
the start phase of the split transaction.
TRIGger:A:BUS:B1:USB:SPLit:SC:VALue? might indicate NOCARE,
specifying that it doesn’t matter whether to trigger on the start or complete phase
of the split transaction.
TRIGger:A:BUS:B<x>:USB:SPLit:SE:VALue
When triggering on a high-speed USB split transaction, this command specifies
the split transaction start/end bit value to trigger on.
B<x>
NOTE. The start and end bits are interpreted based on the type of split transaction:
For Interrupt and control transactions, the S bit means Speed: 0 = Full Speed, 1
= Low Speed.
For bulk IN/OUT and isochronous IN start-split transactions, the S field must be 0.
For bulk/control IN/OUT, interrupt IN/OUT, and isochronous IN start-split
transactions, the E field must be 0.
For full-speed isochronous OUT start-split transactions, the S (Start) and E
(End) fields specify how the high-speed data payload corresponds to data for a
full-speed data packet as shown below:
S E High-speed to Full-speed Data Relation
0 0 High-speed data is the middle of the full-speed data payload.
01High-speeddataistheendofthefull-speeddatapayload.
1 0 High-speed data is the beginning of the full-speed data payload.
1 1 High-speed data is all of the full speed data payload.
Conditions
This command requires the DPO4USB application module to be installed, except
for MDO3000 models, which require the MDO3USB. Note that 1 GHz bandwidth
models are recommended for high-speed (HS) USB.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-871
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