Data strobe megafunction. The altdq megafunction transmits and
receives data on both edges of the reference clock. The altdq
megafunction is available for CycloneIV.
Altera 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.