User's Manual

GC864 Hardware User Guide
1vv0300733 Rev.12 – 2009-06-04
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 17 of 69
NOTE:
Reserved pins must not be connected.
NOTE:
RTS must be connected to the GND (on the module side) if flow control is not used.
NOTE:
If not used, almost all pins must be left disconnected. The only exceptions are the
following pins
2
:
Pin Signal Function
1 VBATT Main power supply
2 VBATT Main power supply
3 VBATT Main power supply
4 VBATT Main power supply
5 GND Ground
6 GND Ground
7 GND Ground
46 GND Ground
25 C103/TXD Serial data input (TXD) from DTE
26 C104/RXD Serial data output to DTE
31 C105/RTS Input for Request to send signal (RTS) from DTE
53 ON/OFF* Input command for switching power ON or OFF (toggle command).
54 RESET* Reset input
4.1.1. GC864-QUAD/PY Antenna Connector
The GC864-QUAD/PY module is equipped with a 50  RF connector from Murata,
GSC type P/N MM9329-2700B.
The counterpart suitable is Murata MXTK92 Type or MXTK88 Type.
Moreover, the GC864-QUAD/PY has the antenna pads on the back side of the PCB.
This allows the manual soldering of the coaxial cable directly on the back side of the
PCB. However, the soldering is not an advisable solution for a reliable connection of
the antenna.
2
RTS should be connected to the GND (on the module side) if flow control is not used.