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Acquiring Data
Touch RUN and the logic analyzer will begin to
acquire data. The analyzer will continue to acquire
data and will display the data when the analyzer
memory is full, the trigger specification is TRUE or
when you touch STOP.
The logic analyzer will flash “Waiting for Trigger” or
“occurrences remaining in level x” where x is number
of the unsatisfied trigger level if the trigger condition is
not satisfied.
POD 3 Description
Pod 3 was included in the USB Analysis Probe to give
the user a detailed look at the USB wire. The USB
Analysis Probe interface contains its own fully
compliant USB serial interface engine (SIE). The
state bits for the USB state machines for this SIE are
available on POD 3. In addition the recovered clock,
recovered data, start of frame, end of packet, end of
sync and low speed/high speed detect signals are
available. These signals are useful for :
• Shadowing the state of the target USB SIE when
that SIE state is unavailable.
• Comparing the state of the target USB SIE with
that of the Analysis Probe SIE.
• Making accurate time measurements of USB
events.
• Accurate USB protocol violation detection.
• Accurate USB signaling violation detection.
POD 3 channel Signal Name Description
16 CLK12 Recovered
Clock
15 MDATA Recovered
Serial Data
30