- Fiber-optic RS232 connection
- RS232, galvanically isolated
- RS485 (4-wire or 2-wire), galvanically isolated
- Special fiber-optic input for GPS (Telem-GPSIF)
- Possibility to connect GPS also through other ports on the board (not valid for RTC rev.5+)
HW revisions differences:
Rev.2 and 3 - no possibility to change firmware through serial port, only with JTAG.
Rev.4 and 4a - firmware loading through serial (RS232) port added.
Rev.5 - usable only with GW6LIN board beginning rev.5 (i.MX controller).