Datasheet

Control Register Demonstration

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Figure 9. Volatile Control Registers Bit Legend

4.1.2 Factory-Programmed Register Values

The Control Registers are programmed at the factory to have a default value. Table 15 shows these

values.

Table 15. Default Register Values

Address Register Default Value

0x00 STATUS 0x01

0x01 CELL_CTL 0x10

0x02 BAL_CTL 0x00

0x03 CONFIG_1 0x00

0x04 CONFIG_2 0x81

0x05 PWR_CTL 0x00

4.1.3 Register Values When Polling

When the Polling button is pressed, the PWR_CTL register is forced to the value of 0x1F. This turns on all

measurement systems as well as the current comparator. This is shown in the Control Register Display.

Note that other bits are automatically updated (written) during polling but are not displayed (read). The

update rate of the bits during polling is in the 10s of milliseconds and does not make sense to display.

4.2 Control Registers Introduction

The Control Registers of the bq76925 are used to configure and control the device. A summary of the

read/write Control Registers follows. This user's guide, however, does not provide the necessary details

on the operation and settings of these registers that are given in the bq76925 data sheet . For those

details, see SLUSAM9.

Mousing over a bit in the Control Register section of the software displays a brief description of the bit.

bq76925EVM Evaluation Module SLUU514– July 2011

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