Datasheet

BUF08821EVM-USB Software Overview

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4.3 Software Description and Set-Up

The BUF08821EVM-USB software allows the user to read and write to all registers in the BUF08821

gamma correction buffer. Furthermore, it allows programming of the OTP register on the BUF08821. The

software also permits the user to select either I

C address. Press the About button, as shown in

Figure 13, to verify that you have the latest version of the software.

The EVM software is controlled through a graphical user interface (GUI). The software communicates with

the EVM through an available COM or other serial port on the PC. Pressing the COM Setting button

brings up a panel that allows you to change the serial port number through which the PC communicates

with the BUF08821EVM, as shown in Figure 13. COM1 is an appropriate choice for most PCs. You can

also set the appropriate baud rate through the same dialog box.

Figure 13. BUF08821EVM-USB Software About Button

5 BUF08821EVM-USB Software Overview

This section discusses how to use the BUF08821EVM-USB software.

5.1 Starting the BUF08821EVM-USB Software

The BUF08821 software can be operated through the Windows Start menu. From Start, select All

Programs; then select the BUF08821EVM program.

Figure 14 shows an error that pops up if the computer cannot communicate with the EVM. If you receive

this error, first check to see that the USB cable is properly connected on both ends. This error can also

occur if you connect the USB cable before the USB_DIG_Platform power source. Another possible source

for this error is a problem with your PC USB Human Interface Device driver. Make sure that the device is

recognized when the USB cable is plugged in; recognition is indicated by a Windows-generated

confirmation sound.

Figure 14. BUF08821EVM-USB Software: Communication Error with the USB_DIG_Platform

BUF08821EVM-USB User Guide and Software Tutorial SBOU095–March 2011

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