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bq27541-G1
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SLUSAL6C –NOVEMBER 2011–REVISED OCTOBER 2012
CONTROL_STATUS: 0x0000
Instructs the fuel gauge to return status information to Control addresses 0x00/0x01. The status word includes
the following information.
Table 3. CONTROL_STATUS Flags
bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
High Byte SE FAS SS CALMODE CCA BCA RSVD HDQHOSTIN
Low Byte SHUTDWN HIBERNATE FULLSLEEP SLEEP LDMD RUP_DIS VOK QEN
SE = Status bit indicating the SE pin is active. True when set. Default is 0.
FAS = Status bit indicating the bq27541-G1 is in FULL ACCESS SEALED state. Active when set.
SS = Status bit indicating the bq27541-G1 is in the SEALED State. Active when set.
CALMODE = Status bit indicating the calibration function is active. True when set. Default is 0.
Status bit indicating the bq27541-G1 Coulomb Counter Calibration routine is active. The CCA routine will take place
CCA =
approximately 1 minute after the initialization and periodically as gauging conditions change. Active when set.
BCA = Status bit indicating the bq27541-G1 Board Calibration routine is active. Active when set.
RSVD = Reserved.
HDQHOSTIN = Status bit indicating the HDQ interrupt function is active. True when set. Default is 0.
SHUTDWN = Control bit indicating that the SET_SHUTDOWN command has been sent and the state of the SE pin can change to
signal an external shutdown of the fuel gauge when conditions permit. See the Shutdown Mode section.
HIBERNATE = Status bit indicating a request for entry into HIBERNATE from SLEEP mode has been issued. True when set. Default is
0.
Status bit indicating the bq27541-G1 is in FULLSLEEP mode. True when set. The state can be detected by monitoring
FULLSLEEP =
the power used by the bq27541-G1 because any communication will automatically clear it.
SLEEP = Status bit indicating the bq27541-G1 is in SLEEP mode. True when set.
LDMD = Status bit indicating the bq27541-G1 Impedance Track™ algorithm is using constant-power mode. True when set.
Default is 0 (constant-current mode).
RUP_DIS = Status bit indicating the bq27541-G1 Ra table updates are disabled. True when set.
VOK = Status bit indicating cell voltages are OK for Qmax updates. True when set.
QEN = Status bit indicating the bq27541-G1 Qmax updates are enabled. True when set.
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