Software
Change this value by clicking on the Value column for a selected register. After doing so, the new value is
stored to the RAM copy of the register on the bq76PL455A-Q1 by clicking the
Write Selected Register
button.
A register value is written to all bq76PL455EVMs in a stack by selecting a register then clicking the
Write
Selected Broadcast
button.
Once a device has been configured as desired, the register settings are saved to a file using the
Export
button. The user is prompted for a folder and file name to which to save the register information.
The
Import
button is used to restore register values to values previously saved to register files using the
Export
button.
WARNING
The register files can also be viewed and modified external to the
GUI with any text editor, but great care must be exercised when
doing so, since register settings can put the IC into an undesirable
state if mistakes are made in the register files and the data in a
register file overwrites existing register values when imported.
The
Save all to EEPROM
button saves the values of all the registers which have a corresponding
EEPROM location to the non-volatile memory in the bq76PL455A-Q1. Once this is done, the data is
stored in the bq76PL455A-Q1 even after the power supply to the TOP pin of the device is removed. If the
device is reset or power is re-applied after removal, the newly stored settings are loaded into RAM and
used thereafter as the new configuration of the device. Due to the limited number of write cycles
supported by the bq76PL455A-Q1, save to EEPROM as seldom as possible. As a reminder to limit this
activity, a warning pop-up window appears anytime a save to EEPROM is requested. This warning
window contains the recommended maximum and current write cycle count. An example of this warning
window is shown in
Figure 15. EEPROM Save Warning
The
Update Checksum
button is typically not used because the checksum is updated automatically by the
GUI for most changes made while in Register View mode and either the
Write Selected Value
or
Write
Selected Broadcast
button is clicked. However, in the event of an error or if a manual update is desired,
clicking the
Update Checksum
button causes the value in the Checksum register to be updated to the
proper value for the current register settings.
The
Hide
button, when clicked, closes the Register View window.
29
SLUUBA7A – April 2015 – Revised July 2015
bq76PL455EVM and GUI User Guide
Copyright © 2015, Texas Instruments Incorporated
