Texas Instruments TVP5154EVM manual Decoder I2C Write and Read Enable System Initialization

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WinVCC in Depth

The TVP5154 I2C Write Enable(s) and Read Enable pop-up window is displayed as shown in Figure 14. This is used to select which decoder or decoders (any combination of all four) will receive I2C Write commands, and which decoder (only one) will receive I2C Read commands. Decoder 1 is Enabled by default; enable the other three decoders by clicking on each decoder’s enable button.

Figure 14. Decoder I2C Write and Read Enable

8.5.1System Initialization

Clicking System Initialization in the Tools menu displays the dialog box shown in Figure 15. This dialog box provides the means for initializing the TVP5154 decoder(s) and/or video encoder for a particular video mode, as well as programming settings for the DM642 through the Generic I2C registers. The details of the initialization are contained in the command file (with a CMD file extension).

The command file is loaded using the Browse… button. Once the command file is opened, a text list displays descriptions of the individual datasets contained within the command file.

Click once on the desired dataset description to select it. Click the Program Device(s) Using Selected Dataset button to run the selected dataset, which loads the devices via the I2C bus. When the device initialization has completed, the status indicator reads Ready.

Note: If Ready does not display, the devices are not initialized and the I2C bus is not communicating. See Chapter 10, Troubleshooting, for possible solutions.

Click the OK button to close the dialog box. Each time the System Initialization dialog box is closed, the initialization file pathname and the dataset selection number are saved in the Windows registry to allow these settings to be retained for the next time WinVCC runs.

SLEU069A –February 2006 –Revised July 2006 TVP5154EVM User's Guide 17

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