Keysight InfiniiVision HD3 Series - I2 C Triggering

I2C Triggering and Protocol Decode 26
Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide 333
• You can use the horizontal [Zoom] window for easier navigation of the decoded
data.
See Also •
"I2C Triggering" on page 333
• "Interpreting I2C Decode" on page 336
• "Interpreting I2C Lister Data" on page 337
• "Searching for I2C Data in the Lister" on page 337
I2C Triggering
To set up the oscilloscope to capture I2C signals, see "I2C Protocol Decode Setup"
on page 331.
After the oscilloscope has been set up to capture I2C signals, you can trigger on a
stop/start condition, a restart, a missing acknowledge, an EEPROM data read, or
on a read/write frame with a specific device address and data value.
1 Select the trigger badge, or from the main menu, choose Trigger > Setup....
2 In the Trigger dialog box, from the Trigger Type drop-down list, select Protocol 1:
I2C or Protocol 2: I2C.
The Trigger dialog box controls unique to the PN: I2C trigger type are:
• Trigger on: — Selects the trigger condition:
• Start Condition — Triggers when SDA data transitions from high to low while
the SCL clock is high. For triggering purposes (including frame triggers), a
restart is treated as a start condition.
• Stop Condition — Triggers when data (SDA) transitions from low to high while
the clock (SCL) is high.
• Restart — Triggers when another start condition occurs before a stop
condition.