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Honored Contributor
Honored ContributorDQS Input and Output Timing Constraints
Greetings, I have a DDR controller which has a bidirectional DQS (data strobe) signal. In read states, the DDR device is driving DQS, as well as some data bits which have timing relationship to...
Altera_ForumHonored Contributor
Honored ContributorI'm not sure if this helps or not, but attached is a diagram of the bidirectional signals and clocks.
I've tried to color code the signals to help see which registers are involved during reads and which are involved during writes.
