Cypress Semiconductor Perform CY7C1380D Especificações descarregar pdf (Página 19)

Chapter 3: Building the SOPC System 3–7

Specify the SOPC Builder System Components

Preliminary

Add a Scatter-Gather DMA Controller

The scatter-gather DMA controller fetches data from the video frame buffer on the

DDR SDRAM and sends the data to the video pipeline. To add a Scatter-Gather DMA

Controller to your system, perform the following steps:

1. Under System Contents, expand Memories and Memory Controllers, expand

DMA, and double-click Scatter-Gather DMA Controller.

2. Under Transfer options, for Transfer mode, select Memory To Stream.

3. Under Data and error widths, for Data width, select 64.

Figure 3–6 shows the Scatter-Gather DMA Controller MegaWizard interface after

you perform this step.

4. Click Finish.

5. In the Module Name column, right-click the Scatter-Gather DMA Controller

component’s name, click Rename, and rename the new component lcd_sgdma.

6. In the Connections column, ensure that your system has the connections listed in

Table 3–2.

Figure 3–6. Scatter-Gather DMA Controller Component Settings

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 45 46

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