Not Recommended for New Designs

bq28550-R1

SLUSAS4A – OCTOBER 2012 – REVISED SEPTEMBER 2014

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Table 9. Control() Subcommands

CNTL Function

CNTL Data

Sealed Access

Description

Set the [FullSleep] bit in Control

SET_FULLSLEEP

0x0010

Yes

Status register to 1

Forces CONTROL_STATUS

SET_HIBERNATE

0x0011

Yes

[HIBERNATE] to 1

Forces CONTROL_STATUS

CLEAR_HIBERNATE

0x0012

Yes

[HIBERNATE] to 0

Forces CONTROL_STATUS

SET_SHUTDOWN

0x0013

Yes

[SHUTDOWN] to 1

Forces CONTROL_STATUS

CLEAR_SHUTDOWN

0x0014

Yes

[SHUTDOWN] to 0

Forces the DOUT pin low to

HOST_DISCONNECT

0x0017

Yes

disable discharge.

Forces the DOUT pin high to

HOST_Enable

0x0018

Yes

enable discharge.

7.6.6.4 CONTROL STATUS: 0x0000

Instructs the gas gauge to return status information to Control Status 0x00/0x01. The status word should include

the following information.

Table 10. CONTROL STATUS Flags

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

High Byte

RSVD

RSVD

RSVD

RSVD

CCA

BCA

RSVD

RSVD

Low Byte

SHUTRQ

HIBERNATE

FULLSLEEP

SLEEP

DSGOFFREQ

RSVD

CHG

DSG

Low Byte

Bit 0 = DSG FET Status, 1 = Discharging allowed (DSG FET ON), 0 = Discharging NOT allowed ( DSG FET

Turned OFF).

Bit 1 = CHG FET Status, 1 = Charging allowed (CHG FET ON), 0 = Charging NOT allowed action to be taken by

Host MCU.

Bit 2 = RSVD (Reserved)

Bit 3 = DSGOFFREQ, DSG FET OFF requested

Bit 4 = SLEEP, Status bit indicating the device is in SLEEP mode. True when set.

Bit 5 = FULLSLEEP, Status bit indicating the device is in FULLSLEEP mode. True when set. The state can be

detected by monitoring the power used by the device because any communication will automatically clear it.

Bit 6 = HIBERNATE, Status bit indicating a request for entry into HIBERNATE from SLEEP mode has been

issued. True when set. Default is 0. Control bit when set will put the device into the lower power state of SLEEP

mode. It is not possible to monitor this bit. Bit 7 = SHUTRQ. Status bit indicating the gas gauge is enabled to

enter SHUTDOWN mode. True when set. Default is 0.

Bit 7 = SHUTRQ, 1 = SHUTDOWN requested

High Byte

Bit 0, 1 = RSVD (Reserved)

Bit 2 = BCA = Status bit indicating the device Board Calibration routine is active. Active when set.

Bit 3 = CCA = Status bit indicating the device Coulomb Counter Calibration routine is active. Active when set.

Bit 4, 5, 6, 7 = RSVD (Reserved)

The following MAC commands are also available.

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