User Guide

RIGOL
DS6000 User’s Guide
7-8
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: select positive or negative polarity. When positive polarity is selected, low level is
valid. When negative polarity is selected, high level is valid. 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 and falling edge.
MISO: master input / slave output. Positive polarity and negative polarity selection
are available.
MOSI: master output / slave input. Positive polarity and negative polarity selection
are available.
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 positive
polarity or negative polarity.
 Press Threshold to set the threshold of the selected 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