V A R - E X T - C B 1 0 3 R E V 1 . 0
E X T E N S I O N B O A R D
2.1.2
RS-232 Level UARTS (Section B)
The VAR-EXT-SB103 features two 5x2 headers. Together with on board
UART connector featured by the VAR-xxxxCustomBoard, all three VAR-
SOM-xxxx UART interfaces can be directly connected to any standard RS-
232 terminal.
Detailed pin out can be found in section
3.2 UARTS
2.1.3
USB HUB (Section C)
The VAR-EXT-SB103 features stand alone, 3 ports USB2 HUB. The HUB
can be connect either to VAR-xxxxCustomBoard HOST port or to the OTG
port using standard USB cable.
The HUB enables to using USB1.1 devices with VAR-OM35CustomBoard
HOST port without needing third party USB hub.
2.1.4
JTAG (Section D)
The VAR-EXT-SB103 features on board 2x7 pin, 2.57mm pitch JTAG connector
to 2x5 pin, 1.27mm JTAG connector converter.
Detailed pin out can be found in section
3.3 JTAG Connectors
6 Data Sheet Rev 1.0
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