Datasheet

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 Copyright 2011 National Semiconductor Corporation
t
AD
Adjust: This tab controls the Aperture Delay function.
Figure 13: t
AD
Adjust Panel
• DCC – Duty Cycle Correction – When checked (default), the automatic Duty Cycle
Correction circuit is enabled.
• STA - Select t
AD
Adjust – When checked, enables the Aperture Delay Time coarse
adjust feature.
• Coarse Phase Adjust – Sets the approximate amount of coarse Aperture Delay
applied.
• Fine Phase Adjust – Sets the approximate amount of fine Aperture Delay applied.
• SA – Select tAD Adjust – When checked, enables the Aperture Delay Time fine adjust
feature. (Overrides the STA function)
Note: No changes will take effect until the Write Adjust Reg button is clicked.