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SPI Serial Decode
After completing the setup of SPI signal and trigger, the scope can decode SPI
signals. Operation steps are as follows.
1. Press Decode→ Decode. Select one of the options from the Decode1 and
Decode2.
2. Press Display and select On to display the result of decoding.
3. Press List to enter the LIST function menu.
4. Press Display and choose the same options as the first step.
5. Press Lines and set the number of lines by Universal Knob. The range of the
lines is 1 to 7.
6. Press Format to change the character encoding format of the decoder’s result.
7. Press Scroll and turn the Universal Knob to view all frames.
Interpreting SPI Decode
The frames of decoding result:
The data values are displayed in frames and are shown in white. Support 4~96
bit data display.
MISO — The decoding result of the “Master-In, Slave-Out” line.
MOSI — The decoding result of the “Master-Out, Slave-In” line.
indicates there is not enough space on the display to show the complete
content of a frame, and some content is hidden.
Figure 45 SPI Decode Bus Display
The lists of decoding result:
Time (timestamp) — The horizontal displacement between current frame and
trigger position.
MISO — The decoding result of the “Master-In, Slave-Out” line.
MOSI —The decoding result of the “Master-Out, Slave-In” line.
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