User’s Manual MSO/UPO2000 Seri es
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b.
Restart: It will be generated at the restarting time, that is, after a start signal, and before it stops,
the start signal appears again.
c.
Stop: It will be generated when the stop bit occurs, that is, when the SCL is in high level, the SDA
signal jumps from low to high.
d.
Loss Confirmed: In I
2
C protocol, every time after 8 bits of information are transmitted, the data
receiver needs to send an acknowledgement signal, which is the ACK bit in the above figure when
the SCL is in high level, the SDA signal is low. The loss trigger will occur while the SCL and SDA signal
at the ACK bit are both high.
e.
Address: It will be generated when the communication address is the same with the user setting
address. It can help to quickly locate the address transmission.
f.
Data: It will be generated when the detected data is equal to/ greater than/ less than/ not equal to
the setting value. This feature is convenient for the data analysis and can capture the abnormal
data.
g.
Address & Data: It will be generated when the addresses are the same and the data relationship
meets the setting conditions during the transmission process. This trigger condition makes it easy
to implement the I
2
C specified address and data trigger, and help to analyze the transmission.
(3)
Address Bit Width
When the trigger condition is select “address” or “address data”, the address bit width of I
2
C signal can
set to 7 bits or 10 bits.
(4)
Address
It will be valid when the trigger condition is “address” or “address data”, the range can set to 00
～
FFF(hexadecimal number).
(5)
Byte Length
It will be valid when the trigger condition is “address” or “address data”, it can set the specific byte length ,
the range can be 1~5.
(6)
Data
It will be valid when the trigger condition is “address” or “address data”, the range can set to
00~FFFFFFFFFF (hexadecimal number). Press Multipurpose knob to set the data.
(7)
Decoding Setting
Quickly enter the entrance of I
2
C protocol decoding, refer to reference protocol decoding
7.16 SPI Trigger
SPI decoding trigger can set trigger condition, data, idle time, trigger coupling, trigger mode and decoding
setting.
(1)
Trigger Condition
a.
Enable chip selection includes chip selection and chip selection & data. It will generated on the edge
