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(4) Trigger Condition
It can set the I
2
C trigger condition to start, restart, stop, loss confirmed, address, data and address
data.
a. Start: It will be generated at the start time, that is, when the SCL is in high level, the SDA signal
has a falling edge.
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.
(5) Address Setting
a. Address Bit Wide
When the trigger condition is select “address” or “address data”, it should set the address bit wide
to 7bits or 10bits.
b. Address
It will be valid when the trigger condition is “address” or “address data”, the range can set to 00
~ 3FF (hexadecimal number).
(6) Data Setting
a. Length of Byte
It will be valid when the trigger condition is “address” or “address data”, it can set the specific length
of byte, the range can be 1~5.
b. 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.
c. Data Mask
It can set the data mask value.
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