Teledyne LeCroy USB Protocol Suite User Manual (Voyager_Advisor T3_Mercury) - Manual (Page 341)

USB Protocol Suite User Manual 341
Format of Traffic Generation Files Teledyne LeCroy Corporation
empty_frame integer Host Generation Only.
This key creates a sequence of start of frame
packets with idle=TO_EOF values for the idle
time. This results in N empty frames, where N is
the integer value specified.
If the branch speed is LOW, the frames contain
only the keep‐alive standalone EOP's. This key
makes for an easier to manage .utg file by
eliminating the need for many lines of
frame=AUTO idle=TO_EOF statements.
Usage:
empty_frames=23; insert 23 empty frames here
host_exp_pid PID Device Emulation Only.
Defines the PID that is expected to be received
from the Host.
The Device Emulator waits until this PID has
completed before sending the next generated
packet.
The key should be assigned to a valid packet
identifier string per the USB specification:
SETUP, IN, OUT, DATA0, DATA1, ACK, DATA2, or
MDATA.
PRE and PING are for Hubs only and are not
supported.
Each memory segment waits forever until it
receives the expected PID to its address/
endpoint, so the user may have to hand edit the
file to achieve the desired results.
Each endpoint memory segment acts
independently.
Key Code Format Description