384 Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide
25 I2S Triggering and Serial Decode
WS Low = Right Channel — Right- channel data corresponds to WS=low;
left- channel data corresponds to WS=high.
13 Press the SCLK Slope softkey; then, turn the Entry knob to select the
SCLK edge on which data is clocked in your device under test: either
rising or falling. The on- screen diagram changes with your selection.
I2S Triggering
To set up the oscilloscope to capture I
2
S signals, see "Setup for I2S
Signals" on page 381.
After you have set up the oscilloscope to capture I
2
S signals, you can then
trigger on a data value.
1 Press [Trigger].
2 In the Trigger Menu, press the Trigger softkey; then, turn the Entry knob
to select the serial slot (Serial 1 or Serial 2) on which the I2S signals
are being decoded.
WS
SCLK
SDATA
LEFT CHANNEL RIGHT CHANNEL
ONE SCLK CYCLE
MSB LSB
1 2 n-2 n-1
0
MSB LSB
1 2 n-2 n-1
0
WS
SCLK
SDATA
LEFT CHANNEL RIGHT CHANNEL
ONE SCLK CYCLE
MSB LSB
1 2 n-2 n-1
0
MSB LSB
1 2 n-2 n-1
0
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