User manual

Protocol Analysis
R&S
®
RTO
273User Manual 1316.0827.02 ─ 06
Bit order
Defines if the data of the messages starts with msb (most significant bit) or lsb (least
significant bit). The display of the decoded signal considers this setting, results are dis-
played in the specified order.
SCPI command:
BUS<m>:SPI:BORDer on page 663
Word length
Sets the number of bits in a word. The maximum length is 32 bit.
SCPI command:
BUS<m>:SPI:WSIZe on page 664
Frame condition
Defines the start of a frame. A frame contains a number of successive words, at least
one word.
"SS"
Start and end of the frame is defined by the active state of the slave
select signal.
"CLK timeout"
Defines a timeout on the clock line SCLK as limiter between two frames.
The timeout condition is used for SPI connections without an SS line.
Enter the minimum clock idle time in the field.
SCPI command:
BUS<m>:SPI:FRCondition on page 667
Timeout
Sets the minimum clock idle time if a timeout on the clock line SCLK is used as limiter
between two frames.
See also: "Frame condition" on page 273.
SCPI command:
BUS<m>:SPI:TIMeout on page 667
10.3.3.2 SPI Trigger
The "Events" tab of the "Trigger" dialog box provides the trigger settings for the configured
serial buses.
SPI Bus