Introduced the Altera company's DQ (ALTDQ) and DQS (ALTDQS) Megafunctions
This user guide from Altera describes the DQ (ALTDQ) and DQS (ALTDQS) megafunctions available in the Quartus II software MegaWizard Plug-In Manager. It covers general features, parameterization, and port and parameter definitions for configuring DDR I/O pins.
The guide lists supported Altera device families including Arria GX, Cyclone II, Cyclone III, Cyclone IV GX, HardCopy II, Stratix, Stratix GX, Stratix II, and Stratix II GX. It also explains ALTDQ and ALTDQS features, common applications, and the MegaWizard Plug-In Manager options for the ALTDQS megafunction.
| Supported device families | Arria GX, Cyclone II, Cyclone III, Cyclone IV GX, HardCopy II, Stratix, Stratix GX, Stratix II, Stratix II GX |
|---|---|
| Output file types | AHDL (.tdf), VHDL (.vhd), Verilog HDL (.v) |
| Required Quartus II version | 9.1 or later |
They configure the DQ and DQS paths for DDR I/O pins; a group of DQ pins is associated with one DQS pin.
They are provided in the Quartus II software MegaWizard Plug-In Manager; the instructions require Quartus II version 9.1 or later.
AHDL (.tdf), VHDL (.vhd), or Verilog HDL (.v).
Arria GX, Cyclone II, Cyclone III, Cyclone IV GX, HardCopy II, Stratix, Stratix GX, Stratix II, and Stratix II GX.