630 Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide
27 :SBUS<n> Commands
• IIC (Inter- IC bus) triggering— consists of connecting the oscilloscope
to the serial data (SDA) line and the serial clock (SCL) line, then
triggering on a stop/start condition, a restart, a missing acknowledge, or
on a read/write frame with a specific device address and data value.
• LIN (Local Interconnect Network) triggering— will trigger on LIN sync
break at the beginning of a message frame.You can trigger on Sync
Break, Frame IDs, or Frame IDs and Data.
• SPI (Serial Peripheral Interface) triggering— consists of connecting
the oscilloscope to a clock, data (MOSI or MISO), and framing signal.
You can then trigger on a data pattern during a specific framing period.
The serial data string can be specified to be from 4 to 64 bits long.
• UART/RS- 232 triggering (with Option 232) — lets you trigger on
RS- 232 serial data.
Reporting the Setup
Use :SBUS<n>? to query setup information for the :SBUS<n> subsystem.
Return Format
The following is a sample response from the :SBUS1? query. In this case,
the query was issued following a *RST command.
:SBUS1:DISP 0;MODE IIC;:SBUS1:IIC:ASIZ BIT7;:SBUS1:IIC:TRIG:TYPE
STAR;QUAL EQU;:SBUS1:IIC:SOUR:CLOC CHAN1;DATA
CHAN2;:SBUS1:IIC:TRIG:PATT:ADDR -1;DATA -1;DATA2 -1
Two I2S buses or two SPI buses cannot be decoded on both SBUS1 and SBUS2 at the same
time.
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