Agilent Technologies 6000 Series User Manual page 117

6000 Series Oscilloscope User's Guide
• EEPROM Data Read — The trigger looks for 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 softkey and the Data is softkey.
When this event occurs, the oscilloscope will trigger on the
clock edge for the Ack bit after the data byte. This data
byte does not need to occur directly after the control byte.
SDA
SCL
Control byte
Start or
Restart Condition
• Frame (Start: Addr7: Read: Ack: Data) or Frame (Start: Addr7:
Write: Ack: Data) — The oscilloscope triggers on a read or
write frame in 7-bit addressing mode on the 17th clock
edge if all bits in the pattern match. For triggering
purposes, a restart is treated as a start condition.
SDA
SCL
Address
Start or
Restart
Condition
Triggering the Oscilloscope
Read
Ack
R/
Read Write
R/ Ack Data
Data Ack
Trigger point
Ack
Trigger point
Condition
17th clock edge
4
Stop
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