V A R - E X T - C B 1 0 5 R E V 1 . 2
E X T E N S I O N B O A R D
6 Data Sheet Rev 1.2
Detailed pin out can be found in section
2.1.2
RS-232/3.3V Level UART (Section B)
Two Full UART interfaces are available using the VAR-EXT-CB105:
1.
D-Type male connector , RS232 levels
2.
5x2, 3.3V IO level header.
Detailed pin-out can be found in section
2.1.3
RS485 Level UART (Section B)
RS485 level UART port is exposed by a 5x2 Header.
Detailed pin out can be found in section
2.1.4
CAN BUS (Section C)*
The VAR-EXT-CB105 features a standard CAN BUS interface based on the
LTC2858-2 transceiver. The CAN BUS signals are available on a 3-pin header.
Detailed pin out can be found in section
3.3 CAN BUS
* Available only for Supportting VAR-SOM- xx modules .
2.1.5
1.8v -> 3.3v level Translation (Section D)
The VAR-EXT-CB105 features on board, 4 channels Bi-directional 3.3V to VIO
level translator. The signals are available on 2x5 pin header.
Detailed pin out can be found in section
3.4 General Purpose Level Shifter
2.1.6
JTAG Adaptor (Section E)
The VAR-EXT-CB105 features an on board 2x7 pin, 2.54mm pitch JTAG connector
to 2x5 pin, 1.27mm JTAG connector converter.
Detailed pin out can be found in section
