Datasheet

FUNCTIONAL DEVICE OPERATION
BATTERY INTERFACE AND CONTROL
Analog Integrated Circuit Device Data
90 Freescale Semiconductor
MC13892
THCHKB Battery thermistor check disable
FETOVRD, FETCTRL
SPI control over BATTFET pin (M3)
FETOVRD: 0 = BATTFET output are controlled by hardware
1 = BATTFET controlled by the state of the FETCTRL bit
FETOCTRL: 0 = BATTFET is driven high if FETOVRD is set
1 = BATTFET is driven low if FETOVRD is set
RVRSMODE
Reverse mode enabling
0 = Reverse mode disabled
1 = Reverse mode enabled
PLIM[1:0], PLIMDIS
Power limiter setting and disabling
PLIMDIS: 0 = Power limiter enabled
1 = Power limiter disabled
CHRGLEDEN
Charge LED indicator enabling
0 = CHRGLED disabled
1 = CHRGLED enabled
CHGRESTART Charger state machine restart
CHGAUTOB
Selects between standalone or software controlled charging operation
0 = Standalone charging
1 = Software controlled charging
CHGAUTOVIB Allows for SPI control over-voltage and current settings in standalone charging mode
CYCLB
Controls charging resume behavior
0 = Enables cycling
1 = Disables cycling
Interrupt and Status bits
CHGDETI Charger attach
CHGFAULTI CHRGRAW over-voltage, excessive power dissipation, timeout, battery out of temperature range
CHGFAULTS[1:0] Charger fault mode sense bits
CHGENS Charger enable sense bit
USBOVI USB over-voltage
CHGSHORTI Short-circuit detection in reverse mode
CHGREVI Charger path reverse current, detection based on CHGCURR threshold
CHGCURRI Charge current threshold, detection based on CHGCURR threshold
CCCVI Charger path regulation mode, detection based on BATTCYCL threshold
CHRGSE1BI Wall Charger Detect
CHRGSE1BS CHRSE1B pin sense
CHRGSSS Charger configuration sense, serial versus single. A logic 1 indicates a serial path.
Thresholds
CHGCURR
CHRGISNS-BPSNS at 35 mA flowing into phone, used for end of charge detection, charger removal and
charge current reversal
BATTMIN
BATT at 3.0 V, used to increase charge current (40/80 mA and 80/560 mA), detect a dead battery insertion
while charging
BPON BP at 3.2 V, used to allow turn on when charging from USB, closes M3 when in serial path
BATTON BATT at 3.4 V, used to allow turn on when charging from USB, closes M3 when in serial path
BATTCYCL BPSNS at 98% of charger voltage setting, used to restart charging, used by CCCVI
Table 61. Main Control Bit Signals
Name Description