Agilent Technologies 7000B Series - Page 286

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C/SPI Triggering and Serial Decode
286 InfiniiVision 7000B Series Oscilloscopes User’s Guide
• Frame (Start: Addr7: Read: Ack: Data: Ack: Data2) or Frame (Start: Addr7: Write:
Ack: Data: Ack: Data2) — The oscilloscope triggers on a read or write
frame in 7- bit addressing mode on the 26th clock edge if all bits in
the pattern match. For triggering purposes, a restart is treated as a
start condition.
• 10-bit Write — The oscilloscope triggers on a 10- bit write frame on the
26th clock edge if all bits in the pattern match. The frame is in the
format:
Frame (Start: Address byte 1: Write: Address byte 2: Ack: Data)
For triggering purposes, a restart is treated as a start condition.
3 If you have set the oscilloscope to trigger on an EEPROM Data Read
condition:
Press the Data is softkey to set the oscilloscope to trigger when data is
=(equal to),
 (not equal to), < (less than), or > (greater than) the data
value set in the Data softkey.
SCL
SDA
Stop
Condition
Trigger point
26th clock edge
Ack
Ack
Ack
Start
Condition
Address
R/W Data
Data 2
Read
Write
SCL
SDA
Start or
Restart
Condition
Trigger point
26th clock edge
Address
1st byte
Write
R/
Ack1
DataAck2
Stop
Condition
Ack
Address
2nd byte