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12048231 Rev. 00 (Draft)
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4.14. UART SER1 Connector
Reference Designator: J48
1.25mm Pitch Molex PicoBlade wire-to-board header, SMT, straight, 6 circuits
Description
The J48 connector provides SER1 UART (Rx/Tx only) of the SMARC module for internal device communication.
Interfaces used
SER1 from SMARC module, direct
CMOS 1.8V
signal characteristics
Connector drawing and contact-numbering scheme
Figure 23 Connector
– J48
Pinout according to Data Modul Inhouse-Standard DMIS08
J48
Pin
Signal / Function
Pin Type
Signal Description
1
VCC
Power 5.0V(S0)
Power supply for attached device; max. current 200mA
2
GND
GND
Connected to ground potential of the PCB
3
unconnected
NC
not connected
4
TXD (CMOS 1.8V)
O (CMOS 1.8V)
Transmit data
5
unconnected
NC
not connected
6
RXD (CMOS 1.8V)
I (CMOS 1.8V)
Receive data