Datasheet

bq27541-G1

SLUSAL6C –NOVEMBER 2011–REVISED OCTOBER 2012

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Control( ): 0x00/0x01

Issuing a Control( ) command requires a subsequent 2-byte subcommand. These additional bytes specify the

particular control function desired. The Control( ) command allows the system to control specific features of the

bq27541-G1 during normal operation and additional features when the bq27541-G1 is in different access modes,

as described in Table 2.

Table 2. Control( ) Subcommands

SEALED

CNTL FUNCTION CNTL DATA DESCRIPTION

ACCESS

CONTROL_STATUS 0x0000 Yes Reports the status of DF Checksum, Hibernate, IT, etc.

DEVICE_TYPE 0x0001 Yes Reports the device type of 0x0541 (indicating bq27541-G1)

FW_VERSION 0x0002 Yes Reports the firmware version on the device type

HW_VERSION 0x0003 Yes Reports the hardware version of the device type

Reserved 0x0004 No Not to be used

RESET_DATA 0x0005 Yes Returns reset data

Reserved 0x0006 No Not to be used

PREV_MACWRITE 0x0007 Yes Returns previous Control() subcommand code

CHEM_ID 0x0008 Yes Reports the chemical identifier of the Impedance Track™ configuration

BOARD_OFFSET 0x0009 No Forces the device to measure and store the board offset

CC_OFFSET 0x000A No Forces the device to measure internal CC offset

CC_OFFSET_SAVE 0x000B No Forces the device to store the internal CC offset

DF_VERSION 0x000C Yes Reports the data flash version on the device

SET_FULLSLEEP 0x0010 Yes Set the [FullSleep] bit in Control Status register to 1

SET_HIBERNATE 0x0011 Yes Forces CONTROL_STATUS [HIBERNATE] to 1

CLEAR_HIBERNATE 0x0012 Yes Forces CONTROL_STATUS [HIBERNATE] to 0

SET_SHUTDOWN 0x0013 Yes Enables the SE pin to change state

CLEAR_SHUTDOWN 0x0014 Yes Disables the SE pin from changing state

SET_HDQINTEN 0x0015 Yes Forces CONTROL_STATUS [HDQIntEn] to 1

CLEAR_HDQINTEN 0x0016 Yes Forces CONTROL_STATUS [HDQIntEn] to 0

STATIC_CHEM_CHKSUM 0x0017 Yes Calculates chemistry checksum

SEALED 0x0020 No Places the bq27541-G1 in SEALED access mode

IT_ENABLE 0x0021 No Enables the Impedance Track™ algorithm

CAL_ENABLE 0x002d No Toggle bq27541-G1 calibration mode

RESET 0x0041 No Forces a full reset of the bq27541-G1

EXIT_CAL 0x0080 No Exit bq27541-G1 calibration mode

ENTER_CAL 0x0081 No Enter bq27541-G1 calibration mode

OFFSET_CAL 0x0082 No Reports internal CC offset in calibration mode

Product Folder Links: bq27541-G1