Tutorial IV: Nios II Processor Hardware Design - Rapid Prototyping of Digital Systems - page 362

any configuration options; therefore, the SRAM component dialog box contains
information only. In the SOPC Builder, rename the SRAM module to sram .
17.9 Adding an SDRAM Memory Controller
There are three types of memory on the DE board: SDRAM, SRAM, and Flash.
Each type of memory requires is own unique memory controller and must be
added individually. Add the SDRAM memory controller by expanding
Memories and Memory Controllers SDRAM . Select SDRAM Controller
and click Add… . The SDRAM controller must be configured for the timing
requirements of the specific SDRAM brand and model being used. The
configuration and timing values requested here are typically available in the
datasheet for SDRAM ICs. For the SDRAM modules on the DE board, set the
options in the configuration dialog boxes to the values shown in Figure 17.11.
Click Finish to add the component. In the SOPC Builder, rename the SDRAM
controller module to sdram .
Figure 17.11 These are the SDRAM controller settings for use with the SDRAM on the DE boards.
17.10 Adding the LCD Module (DE2 Board Only)
The DE2 board contains a Liquid Crystal Display (LCD) component. To
interface this display to the Nios II processor, add the LCD component to your