altdq Megafunction

Data strobe megafunction. The altdq megafunction transmits and receives data on both edges of the reference clock. The altdq megafunction is available for Cyclone^® IV.

Intel recommends instantiating this function with the IP Catalog.

Note:

For this megafunction, the IP Catalog generates output files with multiple entities or modules. The top-level entity or module is located at the bottom of the file.
If your design does not connect to a DQS bus, you should use the altddio_in, altddio_out, oraltddio_bidir megafunctions rather than the altdq megafunction.
To interface with the p and n-pins, you can instantiate your altdq megafunction then instantiate an I/O buffer megafunction.
When you create your megafunction, you can use the IP Catalog to generate a netlist for third-party synthesis tools.

Note: More information is available on the altdq megafunction on the Altera website.