User's Manual

LE920 Hardware User Guide
1vv0301026 Rev.8 2015-01-03
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 75 of 88
15. Application guide
15.1. Debug of the LE920 in production
To test and debug the mounting of LE920, we strongly recommend foreseeing test pads on
the host PCB, in order to check the connection between the LE920 itself and the application
and to test the performance of the module by connecting it with an external computer.
Depending on the customer application, these pads include, but are not limited to the
following signals:
 TXD
 RXD
 ON/OFF
 SHUTDOWN
 RESET
 GND
 VBATT
 TXD_AUX
 RXD_AUX
 USB_VBUS
 USB_D+
 USB_D-
In addition the below signal are also recommended (but not must)
 PWRMON
 STAT_LED
 SW_RDY