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Chapter 11 Protocol Decoding RIGOL
DS8000-R User Guide 11-13
about 2 s after you stop modifying the threshold.
âš« Set the data channel source and the threshold
➢ Click SDA to select the desired source of the clock channel. The
available channels include CH1-CH4.
➢ Click SDA Thre, then use the pop-up numeric keypad or scroll with the
mouse to adjust the threshold of the clock channel. After modifying 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.
âš« Exchange sources
Click Exchange continuously to select "SCL/SDA" or "SDA/SCL" to
exchange the sources of the current clock channel and data channel.
4
． Specify whether the address information includes the "R/W" bit
For I2C bus, each frame of data starts with the address information. The address
information includes the read address and the write address. Click R/W
continuously to select whether the address information includes the "R/W" bit.
When "With" is selected, the "R/W" bit will be included in the address
information and located at the lowest bit; when "Without" is selected, the "R/W"
bit will not be included in the address information.
5
． Display-related setting
Click Display to enter the display setting menu.
âš« Set the display format
Click Format to select the display format of the bus data. The available
display formats of the bus data are "Hex", "Dec", "Bin", and "ASCII".
âš« Adjust the vertical position of the bus
Click Position, and then place the mouse cursor over the menu to scroll
with the mouse or drag the decode label at the left side of the screen to
adjust the vertical display position of the bus.
âš« Set the label display
Click Label to enable or disable the label display of the I2C decoding bus.
When enabled, the bus label "I2C" will be displayed at the upper-left side of
the bus (when the bus display is enabled).
âš« Event table
Click Event Table to enter the event table setting menu. The event table
displays the detailed decoding information in time order in the form of a
table, so as to better observe the long decoded data. The decoding
information includes the decoded data, the corresponding line number, time,
R/W bit, address information, and acknowledgement information.
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