BQ24187 Datasheet, PDF (26/44 Pages) Texas Instruments – 1A USB-OTG Support

bq24187
SLUSBM0 – APRIL 2014
8.6 Register Maps
Not Recommended for New Designs
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BIT
B7 (MSB)
B
B5
B4
B3
B2
B1
B0 (LSB)
NAME ^{(1) (2)}
TMR_RST
BOOST
STAT_1
STAT_0
NA
FAULT_2
FAULT_1
FAULT_0
Table 2. Status/Control Register (READ/WRITE)
Memory Location: 00, Reset State: 00xx 0xxx
READ/WRITE
FUNCTION
Read/Write
Write: TMR_RST function, write "1" to reset the watchdog timer (auto clear)
Read: Always 0
Read/Write
0-Charger Mode
1-Boost Mode (default 0)
Read Only
Read Only
00-Ready
01-Charge in progress,
10-Charge done
11-Fault
Read/Write
Only
NA
Read Only
Read Only
Read Only
000-Normal
001-V_IN > V_OVP or Boost Mode OVP
010- Low Supply connected (V_IN<V_UVLO or V_IN<VS_LP) or Boost Mode Overcurrent
011- Thermal Shutdown
100-Battery Temperature Fault
101- Timer Fault (watchdog or safety timer)
110-Battery OVP
111-No Battery connected
(1) STAT_x bits show current status. These bits change based on the current condition.
(2) FAULT_x bits show faults. If a fault occurs, these bits announce the fault and do not clear until read. If more than one fault occurs, the
first fault is shown.
BOOST Bit
(Operation Mode)
The BOOST bit selects the operation mode for the bq24187. Write a “1” to enable
boost mode and regulate IN to 5V to supply OTG peripherals. See “Boost Mode
Operation” section for more details
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