I2C/SPI Triggering and Serial Decode 24Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide 3252 In the Search Menu, press the Search softkey; then, turn the Entry knob to selectthe 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 addressfield 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 SDAline, followed by a Read bit and an Ack bit. It then looks for the data valueand qualifier set by the Data is softkey and the Data softkeys.• Frame(Start:Address7:Read:Ack:Data) — finds a read frame on the 17th clockedge if all bits in the pattern match.• Frame(Start:Address7:Write:Ack:Data) — finds a write frame on the 17th clockedge if all bits in the pattern match.• Frame(Start:Address7:Read:Ack:Data:Ack:Data2) — finds a read frame on the 26thclock edge if all bits in the pattern match.• Frame(Start:Address7:Write:Ack:Data:Ack:Data2) — finds a write frame on the26th clock edge if all bits in the pattern match.For more information on searching data, see “Searching Lister Data" on page 110.For more information on using the [Navigate] key and controls, see “Navigating theTime Base" on page 59.Setup for SPI SignalsSerial Peripheral Interface (SPI) signals setup consists of connecting theoscilloscope to a clock, MOSI data, MISO data, and framing signal, then settingthe threshold voltage level for each input channel, and finally specifying any othersignal parameters.To set up the oscilloscope to capture SPI signals, use the Signals softkey whichappears in the Serial Decode Menu:1 Press [Label] to turn on labels.2 Press [Serial].3 Press the Mode softkey; then, select SPI trigger type.
