bq24160, bq24161
bq24163, bq24168
SLUSAO0A –NOVEMBER 2011–REVISED MARCH 2012
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REGISTER DESCRIPTION
Status/Control Register (READ/WRITE)
Memory location: 00, Reset state: 0xxx 0xxx
BIT
NAME
Read/Write FUNCTION
B7 (MSB)
TMR_RST
Read/Write Write: TMR_RST function, write “1” to reset the watchdog timer (auto clear)
Read: Always 0
(bq24160/1/3 only)
B6
B5
B4
STAT_2
STAT_1
STAT_0
Read only 000- No Valid Source Detected
001- IN Ready (shows preferred source when both connected)
010- USB Ready (shows preferred source when both connected)
Read only
Read only
011- Charging from IN
100- Charging from USB
101- Charge Done
110- NA
111- Fault
B3
SUPPLY_SEL
Read/Write 0-IN has precedence when both supplies are connected
1-USB has precedence when both supplies are connected (default 0)
B2
B1
FAULT_2
FAULT_1
FAULT_0
Read only 000-Normal
001- Thermal Shutdown
010- Battery Temperature Fault
Read only
B0 (LSB)
Read only
011- Watchdog Timer Expired (bq24160/1/3 only)
100- Safety Timer Expired (bq24160/1/3 only)
101- IN Supply Fault
110- USB Supply Fault
111- Battery Fault
SUPPLY_SEL Bit (Supply Precedence Selector)
The SUPPLY_SEL bit selects which supply has precedence when both supplies are present. In cases
where both supplies are connected, they must remain isolated from each other which means only one
is allowed to charge the battery. Write a “1” to SUPPLY_SEL to select the USB input to have
precedence. Write a “0” to select the IN input.
Battery/ Supply Status Register (READ/WRITE)
Memory location: 01, Reset state: xxxx 0xxx
BIT
B7 (MSB)
B6
NAME
Read/Write FUNCTION
INSTAT1
INSTAT0
Read Only 00-Normal
01-Supply OVP
Read Only
10-Weak Source Connected (No Charging)
11- VIN<VUVLO
B5
B4
USBSTAT1
USBSTAT0
Read Only 00-Normal
01-Supply OVP
Read Only
01-Weak Source Connected (No Charging)
11- VUSB<VUVLO
B3
OTG_LOCK
Read/Write 0 – No OTG supply present. Use USB input as normal.
1 – OTG supply present. Lockout USB input for charging.
(default 0)
B2
B1
BATSTAT1
BATSTAT0
Read Only 00-Battery Present and Normal
01-Battery OVP
Read Only
10-Battery Not Present
11- NA
B0 (LSB)
EN_NOBATOP
Read/ Write 0-Normal Operation
1-Enables No Battery Operation when termination is disabled (default 0)
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