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Altera_Forum
Honored Contributor
Honored Contributorlogic primitives iobuf help
the quartus help not give the truth table for this part. give only little information .
https://www.alteraforum.com/forum/attachment.php?attachmentid=7738 https://www.alteraforum.com/forum/attachment.php?attachmentid=7737 and were is OE pin ? . and how to active or disable output "i mean the output activated with high or low pulse "5 Replies
Altera_ForumThis one is used for bi-directional signals. You have enable signal to choose direction as well as input and output signal to your internal logic. The bi-directional signal goes to outside pin.
- Altera_Forum--- Quote Start --- This one is used for bi-directional signals. You have enable signal to choose direction as well as input and output signal to your internal logic. The bi-directional signal goes to outside pin. --- Quote End --- the enable signal high or low
- Altera_Forum
If it's low, the primitive works as input buffer to fpga. It it's high, the primitive is output buffer.
- Altera_Forum--- Quote Start --- If it's low, the primitive works as input buffer to fpga. It it's high, the primitive is output buffer. --- Quote End --- thank you for helping me but from were you got this information. because i can't find this information
- Altera_Forum
The signal polarity is obvious from the definition. All control signals have positive polarity unless explicitely inverted. A signal "oe" does what it's name tells.
