Agilent Technologies DSO-X 4022A, User Manual

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424 Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide
25
I2C/SPI Triggering and Serial Decode
1 With I2C selected as the serial decode mode, press [Search] .
2 In the Search Menu, press the Search softkey; then, turn the Entry knob
to select the serial slot (Serial 1 or Serial 2) on which the I2C signal is
being decoded.
3 Press Search ; then, select from these options:
• Missing Acknowledge — finds SDA data is high during any Ack SCL
clock bit.
•
Address with no Ack
— finds when the acknowledge of the selected
address field is false. The R/W bit is ignored.
• Restart — finds when another start condition occurs before a stop
condition.
•
EEPROM Data Read
— finds EEPROM control byte value 1010xxx on the
SDA line, followed by a Read bit and an Ack bit. It then looks for the
data value and qualifier set by the Data is softkey and the Data
softkeys.
•
Frame(Start:Address7:Read:Ack:Data)
— finds a read frame on the 17th
clock edge if all bits in the pattern match.
• Frame(Start:Address7:Write:Ack:Data) — finds a write frame on the 17th
clock edge if all bits in the pattern match.
•
Frame(Start:Address7:Read:Ack:Data:Ack:Data2)
— finds a read frame on
the 26th clock edge if all bits in the pattern match.
• Frame(Start:Address7:Write:Ack:Data:Ack:Data2) — finds a write frame on
the 26th clock edge if all bits in the pattern match.
For more information on searching data, see "Searching Lister Data" on
page 146.
For more information on using the [Navigate] key and controls, see
"Navigating the Time Base" on page 75.
Setup for SPI Signals
Serial Peripheral Interface (SPI) signals setup consists of connecting the
oscilloscope to a clock, MOSI data, MISO data, and framing signal, then
setting the threshold voltage level for each input channel, and finally
specifying any other signal parameters.