Altera Cyclone II FPGA Starter User Manual download pdf (Page 31)

Altera Corporation 4–9

October 2006 Cyclone II FPGA Starter Development Kit User Guide

Using the Control Panel

3. Specify the number of bytes of data to read from the flash memory

in the Length box. To copy the entire contents of the flash memory

into a file, only checkmark the Entire Flash box without specifying

the number of bytes.

4. Click on the Load FLASH Content to a File button.

5. Specify the destination file in the pop-up Windows dialog box.

Configuring User

Ports

The SDRAM, SRAM, and flash memory controllers each have four ports:

a host port to connect to the command controller and three user-selectable

asynchronous ports. These three user ports can connect the memory to

other devices. For example, by connecting the flash controller to the VGA

DAC controller, the user can send an image stored in flash memory to the

VGA output.

Users can connect circuits of their own design to one of the user ports of

the SRAM/SDRAM/flash controllers. After downloading binary data

into the SRAM/SDRAM/flash memories, they can configure the memory

controllers to enable their circuits to read/write the SDRAM/flash

memories though the connected user ports.

The sample applications of a flash music player and a VGA display

illustrate the user port configuration.

Flash Music

Player

In this sample application, music data loads into the flash memory.

Options under the Tools tab of the Control Panel configure user ports.

Through user port Asynchronous 1 of the Flash Controller, the flash

memory sends the music data to the Audio DAC Controller and out to the

audio output jack.

To implement this application perform the following steps:

1. Erase the flash memory and write a music file into it (refer to

“Sequential Write” on page 4–8). Use the file music.wav in the

directory CII_Starter_demonstrations\music on the CII Starter

System CD-ROM.

2. In the Control Panel, select the TOOLS tab (Figure 4–6).

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Altera Cyclone II FPGA Starter User Manual Page 31