Teledyne LeCroy USB Protocol Suite User Manual (Voyager_Advisor T3_Mercury) - Manual (Page 336)

Teledyne LeCroy Corporation Format of Traffic Generation Files
336 USB Protocol Suite User Manual
retry TRUE
FALSE Host Generation Only.
Defines whether an automatic retry should be
performed on packets to/from this endpoint in
the case that they are NAKed (or in some cases
NYETed), or if a timeout on device response
occurs.
RETRY only works for the Pids: Setup, In, and
Out.
If TRUE, the Exerciser automatically retries the
specified sequence if a Pid is received on the
bus which does not match the expected_pid, or
if a timeout occurs.
The generator re‐issues the host packet(s) after
waiting either 1/10th of a frame, or until after
the next start‐of‐frame (depending on the value
set for retry_next_frame).
The retries continue until the expected_pid is
received.
When a retry attempt finds its expected_pid,
the Exerciser automatically generates a new
start‐of‐frame before continuing with the rest of
the Gen File. (The start‐of‐frame is either an
SOF packet or a keep‐alive signal.)
If FALSE, the Exerciser waits for a Pid before
proceeding. There is no timeout.
If a Pid is received which does not match the
expected_pid, the Exerciser continues to wait
for the correct Pid to appear.
If the user stops the generation, a message
states that the generator was waiting patiently
for the expected_pid, and it never showed up.
The user must examine the problem by viewing
the trace file.
This statement can also be used in conjunction
with any pid=xxx statement in the .utg file. This
can be done to override the configured or
default retry behavior.
Syntax example: retry=TRUE
Key Code Format Description