Electronic Component Distributor. Source::Texas Instruments
P.N:LM98640CVAL Desc:EVAL BOARD FOR LM98640
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7.5 Register Access Panel
When the Register Map Button is selected, the register access panel will be displayed. This access panel allows bit level
modification to any of the LM98640QML’s configuration registers.
Using the Register Access panel is a simple way to modify individual bits, groups of bits, or entire registers at once. To
access a different register page in the LM98640QML, click on the “Page” data grid on the upper right part of the form.
The contents of that page will be shown in the “Register” level data grid filling the center of the window. Clicking on
individual registers in the “Register’ data grid will expose the register’s Bitfield names in the Bitfield data grid on the right
side of the window.
You can modify the selected register’s contents by clicking on the individual bit buttons (shown above the “Read” and
“Write” buttons), or by modifying the decimal or hexadecimal text box contents. The “Value” data grid can also be used to
modify the selected Bitfield of the chosen register. The “Value” data grid will show bit level buttons for discrete value
types (as seen in the diagram above), or a slider control for continuous value types such as DAC values or PGA values.
If the Wavevision 5 Data Capture hardware is configured properly, any change to the LM98640QML register set will be
automatically written to the device through the SPI. To confirm this operation, pressing the “Read” button, will perform an
SPI read of the currently selected register map page.
Please refer to the LM98640QML datasheet for a full description of the AFE’s internal registers.
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