Protocol analysis
R&S
®
RTO6
510
User Manual 1801.6687.02 ─ 05
Most SPI buses have four lines, two data and two control lines:
●
Clock line to all slaves (SCLK)
●
Slave Select or Chip Select line (SS or CS)
●
Master data output, slave data input (MOSI or SDI)
●
Master data input, slave data output (MISO or SDO)
When the master generates a clock and selects a slave device, data may be transfer-
red in either or both directions simultaneously.
Figure 13-4: Simple configuration of SPI bus
The data bits of a message are grouped by following criteria:
●
A word contains a number of successive bits. The word length is defined in the pro-
tocol configuration.
●
A frame contains a number of successive words, at least one word.
13.3.2
SPI configuration
13.3.2.1
SPI configuration settings
Access: [Bus] > "SPI" > "Setup" tab
Make sure that the tab of the correct serial bus is selected.
SPI bus (option R&S
RTO6-K510)
