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LE910Cx HW User Guide
• Users who use a UART interface only to communicate with the LE910Cx module
must arrange for a UART port in the host system to debug or upgrade the LE910Cx
when it is mounted.
11.5.1.
Fast Boot mode
Fast boot mode is normally used by Telit SW to enter SW download mode
Fast boot is triggered by GPIO_09 (PAD L15). Asserting this signal high (1.8V) during boot
will force the system into Fast boot
11.5.2.
Recovery Boot Mode
Emergency boot download mode is used in case of corrupted boot image has been flashed
into the device or in case all other recovery modes failed to work
The 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.
1VV0301298 Rev. 33
Page 104 of 128
Not Subject to NDA
2021-06-29
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