User's Manual

FreeWave Technologies Spread Spectrum Transceiver User Manual

900 MHz and 2.4 GHz

V5.0S

FGRO RF Board only Pinout

The FGRO Small Footprint Series transceivers are available in both TTL and

RS232 versions.

The TTL versions use reverse polarity from standard RS-232 at 0 to 5 Volt levels.

All pin descriptions and pin numbering are the same as the RS232 version. The

RS232 versions use standard RS232 polarity and voltage levels for all of the

RS232 signal lines (DTR, Transmit Data, Receive Data, Carrier Detect, RTS, and

Clear to Send) and TTL standard polarity and voltage level for the Interrupt pin.

Pin 1: B+ Power input.

Pin 2: Interrupt (INT) – Input – A 0 volt level on this pin will switch the radio into

setup mode.

Note: Pin 1 on the FGRO9 board level transceiver is the pin farthest from the

three LEDs and pin 10 is closest to the LEDs.

Table 18: FGRO Series

Pinout

Pin Assignment

1 B+ input

2 Interrupt (Ground to invoke menu)

3 DTR

4 Ground

5 Transmit Data

6 Ground

7 Receive Data

8 Carrier Detect

9 RTS

10 Clear to Send