Stable Match

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All '-' entries for a channel means "don't care". The Stable Match Editor is displayed below.

 

stable_match

 

ADD a Signal - Highlight a defined signal from the left portion of the window and click the "+" button to add it to the Stable Match. You can also just "Double-Click" the defined signal to automatically add it. NOTE: High Level signal definitions (such as State, I2C, or etc) cannot be added directly as a complete signal. However, the individual portions of the signal (such as :Clock(SCL) above) can be added in the same manner. To see the sub-portions of a signal, click the "expand" button in the left column next to the signal's name, then add the sub portions in the same manner as any other signal.

 

For instance, if you have defined an I2C signal and you only want to add :Clock(SCL) to the Stable match, then expand it and double-click on :Clock(SCL). It would then appear on the right portion of the editor as "AND  I2C:Clock(SCL)" like the ALE signal above.

 

Note: If a signal is valid for the trigger configuration, a green icon will be displayed next to it. Any other icon, such as the blue circle above on the Frame Sync channel of the Address signal, indicates a signal state that is invalid for triggering. This particular icon indicates that the signal is 'Disabled'. Selecting Ignore in the signal definition editor for a particular sub-signal will disable the sub-signal throughout the application. 

 

Delete a Signal - Highlight a signal in the right portion of the window (or mouse-over its bit selections) and click the "-" button to delete it from the Stable Match.

 

Selecting Stable bits - Each bit of the signal can be toggled between the 2 states of '-' (don't care) and 'STABLE' by simply clicking on the bit position in the Stable edit area. To set all bits for a signal to one of these 2 values, use the buttons to the upper-right of the Stable edit area. Boolean signals, if added, do not offer a choice and should be removed when they are no longer needed as part of the  Stable match.

 

Duration - Enter the stability duration by selecting the units then typing the value. The Maximum Duration period for Models DV3200, DV3209, DV3400, DV3409 and DV3500 is 5 ms; 10ms for Models DV3100 and DV3109. The Trigger condition will not be considered as "True" until the selected signals (and bits) have been stable for the indicated duration period.

 

Identifier - Change the identifier to something meaningful for the match condition if you do not want the default "Match #" to be displayed in the formula and the graphical configuration area of the trigger screen.