UL865-N3G Hardware User Guide
1VV0301177 Rev 2– 2015-04-20
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved.
Page 16 of 70
Mod. 0805 2011-07 Rev.2
NOTE:
If not used, almost all pins should be left disconnected. The only exceptions are the
following pins:
4.2.
Debug in Production
To test and debug the assembled UL865-N3G V2, we strongly recommend foreseeing test
pads on the host PCB, in order to check the connection between the UL865-N3G V2 itself and
the application and to test the performance of the module connecting it with an external
computer. Depending by the customer application, these pads include, but are not limited to
the following signals:
TXD
RXD
RESET*
GND
VBATT
VBATT_PA
TX_AUX
RX_AUX
PWRMON
Pin
signal
38, 37
VBATT & VBATT_PA
32, 33, 35, 36, 46
GND
23
AGND
7
C103/TXD
If not used should be connected to a Test Point
8
C104/RXD
If not used should be connected to a Test Point
5
C105/RTS
If not used should be connected to a Test Point
6
C106/CTS
If not used should be connected to a Test Point
43
V_AUX / PWRMON
47
RESET*
45
TXD_AUX
If not used should be connected to a Test Point
44
RXD_AUX
If not used should be connected to a Test Point
18
USB D+
If not used should be connected to a Test Point or
an USB connector
17
USB D-
If not used should be connected to a Test Point or
an USB connector
16
USB_VBUS
If not used should be connected to a Test Point or
an USB connector
