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Switch
Function
Position
CBL_PWR_
N
NC
BAT_THERM
BAT_ID
3.8.6 External Battery-Charger Header – J26
The External Battery-Charger Header exposes battery charging related signals for an external battery
charger. Please refer to the schematic to disable the SOM battery-charger before using this header. The
pinout of this header is descripted in below.
Open-Q™ 212A Development Kit User Guide
Description
1
Auto boot Selection
ON (Default): System will auto boot
whenever power is applied
OFF: User needs to press the power
button to turn on the system after power
is applied
2
No Function
3
Battery Thermistor
ON (Default): Uses the 10k resistor
(R197) on the carrier board to
simulate battery thermistor presents
OFF: Use battery's thermistor
4
Battery ID
ON (Default): Uses the 51k resistor
(R198) on the carrier board to
simulate battery ID presents
OFF: Use battery's ID
Figure 8 External Battery-Charger Header (J26)
Table 8 External Battery Charger Header J26 Pinout
Open-Q 212A Development Kit
Notes
Set this switch to ON when
using a battery that does
not have a built-in
thermistor.
Set this switch to ON when
using a battery and the
battery does not have an
ID pin.
23
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