miriac SBC-S32G-R3_User Manual
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© MicroSys Electronics GmbH 2021
6.18
Test and expansion Connector (ST4)
ST4 is a 12-pin header for board testing and external I2C devices
Part Reference:
ST4
Manufacturer:
any
Type:
HEADER-
2.54-180-M-2X6
WE-6130-12-211-21
Pin:
Pin:
1
VDD_OTP
To module (PMIC)
+7V5
May be connected by jumper
to pin 1 to force PMIC perma-
nently into debug mode
2
3
+3V3
For measurement
and external power
V_IN
With 1K serial resistor
For measurement only
4
5
+1V8
With 1K serial resistor
For measurement only
+5V0
For measurement
and external power
6
7
+1V5
With 1K serial resistor
For measurement only
nc
8
9
+1V1
With 1K serial resistor
For measurement only
GND
10
11
I2C2_SDA_EXT
Buffered external I2C2
I2C2_SCL_EXT
Buffered external I2C2
12
Table 6-45 ST4 Test Connector Pinout
+3V3 and +5V0 may be used to feed external extension boards. Boards may be
controlled by I2C2 i/f.