STBCFG01 Datasheet, PDF (29/37 Pages) STMicroelectronics – Integrated current sensing resistor

STBCFG01
I²C compatible interface registers
FSW: switching frequency. The switching frequency can be changed only when the device
doesn’t switch. SHDN input should be pulled high before modifying this setting.
 0: 2 MHz
 1: 3 MHz (default)
DICHG_adj: dynamic charging current adjustment enable (for soft-current transitions)
 0: disabled
 1: enabled (default)
BST_status: OTG boost status
 000: idle
 001: wait soft-start
 010: linear soft-start
 011: switching soft-start
 100: frequency ramp-up
 101: OTG_run
 110: PMOS-off
 111: shutdown
BST_SH: OTG boost output short at beginning
 0: no short detected (default)
 1: short detected
Table 23: CHG_Status1 register format (register address: 95h)
b7 b6 b5 b4 b3 b2
b1
b0
POR
R/W
CHG_status
PreB_st
PreB
Alarm
00h
R
Alarm: alarm state
 0: no alarm is active
 1: alarm condition detected
PreB: pre-bias current activation
 0: pre-bias current has not been activated
 1: pre-bias current has been activated (VINOVP < VDCIN < VINOVP_PB for more than tPBD)
PreB_st: pre-bias current sink status
 0: pre-bias current sink is currently off
 1: pre-bias current sink is currently on
CHG_status: charger status
 00000: idle
 00001: trickle charge
 00010: pre-charge
 00011: fast charge
 00100: taper charge (constant voltage)
 00101: charge done (termination)
 00110: boost on
 00111: shutdown
 01000: battery detection running
DocID026474 Rev 3
29/37