User's Guide

LE910Cx HW User Guide
Doc#: 1VV0301298
Rev. 13.0 Page 104 of 124 2019-07-15
11.5.1. Fast Boot mode
Fast boot mode is normally used by Telit SW to enter SW download mode
Fastboot is triggered by GPIO_09 (PAD L15). Asserting this signal high (1.8V) during boot
will force the system into Fastboot
11.5.2. Recovery Boot Mode
Emergency boot download mode is used in case of corrupted boot image was flashed into
the device or in case all other recovery modes failed to work
Emergency download mode is triggered by WCI_RX signal (PAD M9). Asserting this
signal high (1.8V) during boot will force the system into Emergency download.
NOTE:
The application board must support accessible test pads on GPIO_09 and
WCI_RX signal to enable the download recovery modes mentioned above.