BK Precision 2560B Series, User Manual

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Serial Trigger and Decode
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10.8 I2S Trigger and Serial Decode
This section covers triggering and decoding I2S signals. Please read the following for more
details:
I2S Signal Configuration , I2S Trigger and I2S Serial Decode
Before configuring the signals settings connect the I2S signal to the oscilloscope.
10.8.1 I2S Signal Configuration
To select the decoding Bus Protocol :
1. Press the Decode key or use the touchscreen controls to enter the Decode Menu .
2. Use the touchscreen to enable Bus Operation .
3. Use the touchscreen to select Bus Protocol .
4. The window shown in figure 10.1 will appear with the addition of the Manchester
protocol.
5. Select the I2S bus protocol.
Protocol Signals
To set the source and threshold of the I2S signal use the touchscreen to select
Protocol Signal :
1. The I2S SIGNAL menu will be displayed. (Figure 10.40 )
BCLK
2. Use the touchscreen to select BCLK , the Source Setting window will appear.
• Select the channel that will provide the bit clock signal.
• Use the touchscreen to select Threshold and input the desired threshold.
– The threshold voltage level is for decoding, and it will be regarded as the trig-
ger voltage level when the trigger type is set to serial.
– The threshold level line only appears when adjusting the threshold level.
• Use the touch screen to select either Rising or Falling edge.
– Rising : Data latched on the rising edge of the clock.
– Falling : Data latched on the falling edge of the clock.
Figure 10.40
I2S Signal Menu