Teledyne LeCroy USBTracer_Trainer - Users Manual - Manual (Page 317)

USB Protocol Suite User Manual Chapter 11: Traffic Generation (2.0)
LeCroy Corporation
303
Bus Condition Keys
reset
positive
integer
or
LS_EOP Host Generation Only.
Indicates the number of microseconds that
single-ended zeros (SE0) are driven onto the bus.
Assign a positive integer to this key.
This key can also be assigned the string LS_EOP to
drive two low-speed bit times of SE0 followed by one
bit time of J.
se0 positive integer
<2500 Host Generation Only.
Same SE0 signal as reset, but the range is in
nanoseconds (accuracy: +/- 33 ns).
suspend positive
integer Host Generation Only.
Indicates the number of microseconds of idle and
suspend after the previous packet (for example, for
ten milliseconds of suspend, the key should equal
13000).
Assign a positive integer to this key.
Note that suspend begins after 3 milliseconds of idle.
resume positive
integer Host Generation Only.
Indicates the number of microseconds of K driven
onto the bus.
Assign a positive integer to this key.
For a proper resume sequence, this should be
followed by the condition
reset=LS_EOP speed=LOW.
wait_resume HERE Host Generation Only.
Place this immediately before a resume=<>
statement to implement a device resume, also known
as Remote Wakeup.
This causes the host to wait for the device to issue the
Resume (K) condition before the Host proceeds with
its own Resume signalling.
This statement MUST be followed by the
resume=<> statement.
chirp HERE Used to create a chirp sequence for a High Speed
generation.
Usage: chirp=HERE
wait_vbus VALID Device Emulation Only.
Wait for VBus to go Hi.
termination HERE Device Emulation Only.
Set terminations now.
wait_termination HERE Host Emulation Only.
Only for Voyager.
Wait until Device Speed terminations are seen before
proceeding.
Key Code Format Description