Datasheet

bq24160, bq24160A
bq24161, bq24161B
bq24163, bq24168
SLUSAO0E –NOVEMBER 2011–REVISED NOVEMBER 2013 www.ti.com
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 STAT_2 Read only 000- No Valid Source Detected
001- IN Ready (shows preferred source when both connected)
B5 STAT_1 Read only
010- USB Ready (shows preferred source when both connected)
B4 STAT_0 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 FAULT_2 Read only 000-Normal
001- Thermal Shutdown
B1 FAULT_1 Read only
010- Battery Temperature Fault
B0 (LSB) FAULT_0 Read only
011- Watchdog Timer Expired (bq24160/1/1B/3 only)
100- Safety Timer Expired (bq24160/1/1B/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.
STAT_x and FAULT_x Bits
The STAT_x show the current status of the device and are updated dynamically as the IC changes
state. The FAULT_x bits show faults that have occurred and are only cleared by reading the bits,
assuming the fault no longer exists. If multiple faults occur, the first one is the one that is shown.
Battery/ Supply Status Register (READ/WRITE)
Memory location: 01, Reset state: xxxx 0xxx
BIT NAME Read/Write FUNCTION
B7 (MSB) INSTAT1 Read Only 00-Normal
01-Supply OVP
B6 INSTAT0 Read Only
10-Weak Source Connected (No Charging)
11- V
IN
<V
UVLO
B5 USBSTAT1 Read Only 00-Normal
01-Supply OVP
B4 USBSTAT0 Read Only
01-Weak Source Connected (No Charging)
11- V
USB
<V
UVLO
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 BATSTAT1 Read Only 00-Battery Present and Normal
01-Battery OVP
B1 BATSTAT0 Read Only
10-Battery Not Present
11- NA
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Product Folder Links: bq24160 bq24160A bq24161 bq24161B bq24163 bq24168