SPI serial bus menu fields and controls
Field or control Description
Display Turns On or Off displaying the bus on the W
aveform view.
Label Enter a label for the bus. The default label is the selected bus type.
To enter label text, double-tap the field and enter label using the virtual keyboard, or tap the field and
enter text from an attached keyboard.
Position Sets the vertical position of the bus waveform. The default position is vertically centered in a slice (in
Stacked mode), or center screen in Overlay mode. The unit of position is screen divisions.
Set to 0 Sets the vertical position to 0 divisions (centered vertically in a slice or on the screen.
Results Table Sets the results table as On or Off to see the active measurements, bus decode activity, and search
results in a spreadsheet format. Default is off.
Bus Type Set to SPI.
Data Inputs Select the number of inputs as One or Two.
One enables to configure one data input. Two enables to configure MOSI and MISO.
Framing Set to Slave Select (SS) or Idle framing modes.
SCLK Input Select the channel source and threshold level for the Serial Clock signal (output from master).
Set the Polarity to rising or falling edge of the clock signal used by the master device to start
transferring bits.
Available when Framing is SS and Data Inputs is One, and Framing is Idle.
SS Input Select the channel source and threshold level for the Slave Select signal to start communications with
the slave device.
Set the Polarity to use Active High or Active Low logic for the SS signal.
Available when Framing is SS.
Data Input Select the channel source and threshold level for the data input.
Set the Polarity to use Active High or Active Low for the SS signal.
Available when Data Inputs is One.
MOSI Input Select the channel source and threshold level for the MOSI (Master In Slave Input) input.
Set the Polarity to use Active High or Active Low logic for the MOSI signal.
Available when Data Inputs = Two, and Framing = SS/Idle.
MISO Input Select the channel source and threshold level for the MISO (Master In Slave Output) input.
Set the Polarity to use Active High or Active Low logic for the MISO signal.
Available when Framing is SS/Idle and Data Inputs is Two.
Word Size Enter the word size, in bits. Minimum is 4, maximum is 32, and default is 8.
Bit Order Set to most significant bit MS First or least significant bit LS First.
Idle Time (Framing = ) Set the idle frame time.
Available when Framing is Idle.
Table continued…
Menus and dialog boxes
2 Series MSO MSO24 and MSO22 131
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