The data memory tool is used to configure the device. The device has both volatile registers and One Time Programmable (OTP) memory. Most evaluation can be performed without writing OTP. Configuration files may be saved and loaded later to resume evaluation. At power up, the device is configured from the OTP. On a new EVM, the OTP has only the REG0 and REG1 settings of the BQ76922, other locations are not programmed. Configuration can be entered in the volatile registers using the Data Memory tool. The Data Memory tool displays as a tab in the center pane of the BQStudio window. Figure 4-5 shows the initial data memory view with a device connected. Configuration settings are grouped into different functions accessed with buttons on the left side of the pane. The Calibration section is displayed on initial selection. Other functional sections can be displayed by clicking on the named button.

Figure 4-5 Data Memory View