User's Manual

DE910 Series Hardware User Guide
1vv0301183 Rev.1 – 2015-2-13
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15. Application Design Guide
15.1. Download and Debug Port
One of the following options should be chosen in the design of host system in order to
download or upgrade the Telit’s software and debug DE921 when DE921 is already mounted
on a host system.
Users who use both of UART and USB interfaces to communicate DE921
- Must implement a download method in a host system for upgrading DE921 when it’s
mounted.
Users who use USB interface only to communicate DE921
- Must arrange UART port in a host system for upgrading or debugging DE921 when it’s
mounted.
Users who use UART interface only to communicate DE921
- Must arrange USB port in a host system for upgrading or debugging DE921 when it’s
mounted.