Protocol analysis
R&S
®
RTE
646User Manual 1326.1032.02 ─ 20
"Frame condi-
tion"
Sets the trigger on an AND combination of data conditions on differ-
ent channels. The instrument triggers if all conditions are met inside
one frame.
Description of specific trigger type settings:
●
"Channel" on page 646
●
"Data condition" on page 646
Description of specific trigger type settings: "Channel" on page 646
and .
"Word select"
Triggers on the selected edge of the WS line, that is, on the beginning
of the left or right channel (I²S, left- and right-justified). For TDM sig-
nals, it triggers on the selected edge of the FSYNC line - on the
beginning of a TDM frame.
The trigger time is the first clock edge after the selected WS/FSYNC
edge.
Description of specific trigger type settings: "Word select: Slope"
on page 647.
"Error condi-
tion"
The oscilloscope uses the WS or FSYNC line to monitor the channel
and frame length. An error is detected when two consecutive frames
have different length. The instrument triggers on the first clock edge
after error detection.
Figure 13-37: Trigger on errors in I²S standard signal with clock polarity "Rising"
Remote command:
TRIGger<m>:I2S:TYPE on page 1598
Channel
Selects the audio channel on which the instrument looks for the specified data condi-
tion.
The setting is relevant for trigger types Data, Window and Frame condition.
Note: For TDM signals. the number of available channels depends on the configura-
tion of the audio bus, see "#TDM CHs" on page 643.
Remote command:
TRIGger<m>:I2S:TCONdition<n>:CHANnel on page 1599
Data condition
The data condition setup consists of the operator and one or two data patterns.
Audio signals (option R&S
RTE-K5)
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