Chapter 5 To Trigger the Oscilloscope RIGOL
DS1000Z User’s Guide
SPI Trigger (Option)
Trigger on the data pattern on the specified edge. When using SPI trigger, you need
to specify the SCL and SDA data sources. Below is the sequence chart of SPI bus data
transmission.
Serial Data Line Buffer
(SPIxRXB)
Shift Register
SPIxSR
SPI Buffer
SPIxBUF
Serial Data Line Buffer
(SPIxRXB)
Shift Register
SPIxSR
Serial Transmission Buffer
(SPIxTXB)
SPI Buffer
SPIxBUF
Serial Transmission Buffer
(
SPIxTXB)
Highest Bit Lowest Bit
Highest Bit Lowest Bit
SDIx SDOx
SDIxSDOx
Processor 1[SPI Host] Processor 2[SPI Slave
]
SCKx
Serial Clock
SCKx
Trigger Type:
Press Type to select “SPI”. At this point, the trigger setting information as shown in
the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press SCL and SDA to specify the data sources of SCL and SDA respectively. They
can be set to CH1-CH4 and the current trigger source is displayed at the upper right
corner of the screen.
Trigger Condition:
Press When to select the desired trigger condition.
CS: trigger when the CS channel is select high level or low level. After this
trigger condition is selected, press Mode to select or . Note