2-1
IM 701610-61E
SPI Bus Signal Analysis Function
2
Chapter 2
SPI Bus Signal Analysis Function
2.1
Overview of the SPI Bus Signal Analysis Function
About the SPI Bus Signal Analysis Function
By using this function, you will be able to analyze data while displaying the SPI bus
signal waveform. The main functions are as follows:
• Analysis Function
You can analyze the data and other information that are displayed when the
acquisition of historical data, acquisition data, or waveform is stopped.
The analysis results are listed on the right side of the screen. In addition, the analysis
results can be displayed using hexadecimal or binary notation. The analysis results
and waveforms can be displayed simultaneously.
• Search Function
From the acquired data (the currently displayed data), you can search in the forward
or reverse direction for data that matches a specified data pattern and display the
matched data expanded on the ZOOM display. You can specify the data pattern
using binary or hexadecimal values and set the data length to a value between 1 and
8 bytes. You can also search indefinite data.
1
2
3
4
5
6
7
8
Analysis result
Byte number:
0
Data output signal:
08(HEX)
Data input signal:
C4(HEX)
Chip select signal:
L
Bit order:
MSB First
Clock signal(Clock)
Data output signal
Data input signal
Chip select signal (CS)
0
0
0
0
1
0
0
0
1
1
0
0
0
1
0
0
Note
•
On the DL1640/DL1640L, the clock signal is input to CH1; the data input signal (Data1 and
Data2) to CH2 and CH3; and the chip select signal (CS) to CH4.
•
Data is transmitted in units of bytes (8 bits) by synchronizing to the clock signal.
Consequently, the SPI signal is analyzed or searched at the byte level.
•
The SPI bus analysis function does not have a dedicated trigger.
