Rigol DS2102E [123/283] Spi trigger

Chapter 5 To Trigger the Oscilloscope RIGOL

DS2000E User’s Guide 5-41

SPI Trigger

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 SPI bus data transmission

diagram.

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

Figure 5-15 SPI bus data transmission diagram

Trigger Type:

Press Type to open the trigger type list. Rotate and press down to select

"SPI". At this point, the trigger setting information is displayed at the upper right

corner of the screen. For example, . The trigger type is SPI trigger;

the trigger source is CH1; the trigger level is 0.00 V.

Source Selection:

Press SCL and SDA to specify the data sources of SCL and SDA respectively. They

can be set to CH1 or CH2. For the details, please refer to the introduction in "Trigger

Source". The current trigger source is displayed at the upper right corner of the

screen.

Note: Select channel with signal input as trigger source to obtain stable trigger.