User Manual

Protocol Analysis
R&S
®
Scope Rider RTH
178User Manual 1326.1578.02 ─ 08
Remote command:
BUS:SPI:ORDer on page 387
Frame Timeout
Sets the minimum idle time between two data frames. If the time interval between the
data frames is shorter, the words are part of the same frame. Within the timeout, the
data and clock lines are low. A new frame begins when the timeout has expired.
Timeout is only relevant if the bus has no chip select.
Remote command:
BUS:SPI:TIMeout on page 388
8.3.3 SPI Trigger Settings
Access: "Bus" menu > "Bus Protocol" = "SPI" > "Trigger"
SPI Trigger
Selects the trigger type for SPI analysis.
"Frame Start"
Sets the trigger to the start of the message. If the bus has a CS line,
the frame starts when the chip select signal changes to the active
state. Without CS line, the frame starts when the idle time has
expired.
"Frame End"
Sets the trigger to the end of the message. If the bus has a CS line,
the frame ends when the chip select signal changes to the inactive
state. Without CS line, the frame ends when the idle time has expired
after the last clock and no new clock appeared during that time.
SPI (Option R&S RTH-K1)