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Chapter 11 Protocol Decoding
I2S Decoding (Option)
The oscilloscope samples the I2S signal and judges each data point as logic "1" or
logic "0" according to the preset threshold level. I2S decoding is required to specify
the serial clock, channel signal, and the data's source channel. You need to set
Alignment, WS Low, and other parameters. This decoding is only available for the
MSO5XX4 model or the model installed with the MSO5000-4CH option.
In the decode setting menu, press Decode1 Bus Type, then rotate the
multifunction knob
press Bus Type continuously or enable the touch screen to select it.
1. Enable or disable the bus
Press Bus Status continuously to enable or disable the decoding function.
2. Quickly apply I2S trigger settings to I2S decoding
Press Copy Trig to copy the I2S trigger settings and apply them to I2S
decoding function (set the corresponding I2S decoding parameters
automatically). For analog channels, the threshold level settings will also be
copied.
3. Source setting
Press Sources to enter the source setting menu.
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to select "I2S". Press down the knob to select it. You can also
Set the serial clock channel source, threshold, and clock edge
Press SCLK and rotate the multifunction knob
channel, and then press down the knob to select it. You can also press
SCLK continuously or enable the touch screen to select it. The
available channels include CH1-CH4 and D0-D15.
When you select the analog channel (CH1-CH4), press SCLK Thre
below SCLK, then rotate the multifunction knob
numeric keypad to set the threshold of the SCLK. When you modify the
threshold of the clock channel, a dotted line displaying the current
threshold level is displayed on the screen. The dotted line disappears in
about 2 s after you stop modifying the threshold.
Press SCLK Edge continuously to select "Rising(
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