RIGOL DS6000 Series - Manual (Page 171)

7 Protocol Decoding RIGOL
DS6000 User’s Guide 7-13
SPI Decoding (Option)
SPI serial bus consists of chip select line (SS), clock line (SCLK), MISO and MOSI.
Host Device
SS
MISO
MOSI
SCLK SCLK
MOSI
MISO
SS
MISO
MOSI
SCLK
SS
SS: set the polarity to “Low” or “High” (note that this function is not available when
Channel is set to “OFF”). When SS selection is valid, the SPI bus samples data from
MISO and MOSI at the jumping point of SCLK.
SCLK: sample data from MISO and MOSI on the clock rising edge or falling edge.
MISO: master input/slave output. Set the polarity to “Low” or “High”.
MOSI: master output/slave input. Set the polarity to “Low” or “High”.
Press MATH  BUS1  Decode to select “SPI” and turn the SPI decoding function
menu on.
1. SS Setting
Press SS to turn the chip select line setting interface on.
 Press Channel to select any channel (CH1-CH4) as the chip select channel.
When “OFF” is selected, the sample of MISO and MOSI occurs at the
jumping point of SCLK.
 Press Polarity to set the polarity of the chip select channel to “Low” or
“High”.
 Press Threshold to set the threshold of the chip select channel.
2. SCLK Setting
Press SCLK to turn on the clock line setting interface.
 Press Channel to select any channel (CH1-CH4) as the clock channel.
 Press Slope to set to sample MISO and MOSI on the rising edge or falling
edge of SCLK.
 Press Threshold to set the threshold of the clock channel.