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Chapter 11 Protocol Decoding RIGOL
DS8000-R User Guide 11-17
2． Quickly apply SPI trigger settings to SPI decoding
Click Copy Trig to copy the SPI trigger settings and apply them to SPI decoding
function (set the corresponding SPI decoding parameters automatically). The
settings available for copy include CS/Timeout mode, CLK, MISO, Slope, and etc.
3
． Mode
Click Mode to enter the mode setting menu. Click Mode to select "Timeout" or
"CS".
âš« Timeout: you can perform frame synchronization according to the timeout,
and the timeout value must be greater than half of the clock cycle. Click
Timeout, and then use the pop-up numeric keypad or scroll with the
mouse to set the timeout value. The available range of the timeout value is
from 8 ns to 10 s. By default, it is 1 μs.
âš« CS: contains a chip select line (CS). You can perform frame synchronization
according to CS. When "CS" is selected,
➢ Click CS to select the desired channel. The analog channel (CH1-CH4)
can be selected as the CS channel.
➢ Click CS Polarity continuously to select (Positive) or
(Negative) as the polarity for CS channel.
➢ Click Threshold, then use the pop-up numeric keypad or scroll with
the mouse to set the threshold.
4
． Source setting
Click Sources to enter the source setting menu.
âš« CLK setting
➢ Click CLK to select the desired source of the clock channel. The analog
channel (CH1-CH4) can be selected.
➢ Click Threshold below the CLK menu, then use the pop-up numeric
keypad or scroll with the mouse to set the threshold level of the clock
channel.
➢ Click Slope continuously to set the instrument to sample MISO and
MOSI on the rising edge (
) or falling edge ( ) of the clock signal.
âš« MISO and MOSI setting
➢ Click MISO to select the desired MISO data channel. The available
channels include OFF and analog channels (CH1-CH4). When you
select an analog channel (CH1-CH4), click Threshold below the MISO
menu, then use the pop-up numeric keypad or scroll with the mouse to
set the threshold of the MISO data channel.
➢ Click MOSI to select the desired MOSI data channel. The available
channels include OFF and analog channels (CH1-CH4). When you
select an analog channel (CH1-CH4), click Threshold below the MOSI
menu, then use the pop-up numeric keypad or scroll with the mouse to
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