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SHS800X&SHS1000X User Manual
92
WWW.SIGLENT.COM
I2C Serial Decode
After completing the setup of I2C signal and trigger, we will decode I2C signals.
Operation steps as follows.
1. Press Shift and Print→ Decode. Select one of the options from the Decode1
and Decode2.
2. Press the Display and select On to display the result of decoding.
3. Press the Configure to turn on or off the read or write bit.
4. Press the List to enter the LIST function menu.
Press the Display and choose the same options as the first step.
Press the Scroll and turn the Universal Knob to view all frames.
Press the Lines and set the number of lines by Universal Knob. The range
of the lines is 1 to 7.
When a packet of data is long, all decoded data are not displayed. Turn
on the Long Data to display the complete data.
Users can export the result list of the package to the external USB storage
device in csv format (only when the USB flash disk is detected). Saving
the data (*.csv) is similar to the operation of setup files, see the section
"External save and recall" for details.
5. Press the Format to change the character encoding format of the decoding’s
result.
6. Press the Copy Setting to enter the COPY function menu to synchronize the
corresponding bus configuration and trigger configuration.
7. Press the Tips Info to turn on or off the decoding limit prompt. When the
decoding frame number reaches the maximum, it will pop up "Decoding to
maximum frame number limitation!"
Interpreting I2C Decode
The frames of decoding result:
The address value is displayed at the beginning of a frame. The write
address is displayed in green, and read address in yellow.
W/R bit is represented by (W) and (R), following the address value.
The data value is displayed in white.
"~A" after a data or address bits indicates no acknowledgement. For example,
DB~A.
Indicates there is not enough space on the display to show the complete
content of a frame, and some content is hidden.
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