Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved.
L816-AM Hardware User Manual
Page 25 of 42
3.3.3 Module Reset
The L816-AM module can reset to its initial status by pulling down the Reset_N signal for more than 10ms
(100ms is recommended), and the module will restart after the Reset_N signal is released. When the
customer executes Reset_N function, the PMU remains its power inside the module. The recommended
circuit design is shown in the Figure 3-8:
Figure 3-8 Recommended Design for Reset Circuit
The reset control timing is shown in Figure 3-9:
Figure 3-9 Reset Timing Control
Note:
Reset_N is a sensitive signal, it’s recommended to add a filter capacitor close to the module. In
case of PCB layout, the Reset_N signal lines should keep away from the RF interference and
protected by GND. Also, the Reset_N signal lines shall neither near the PCB edge nor route on
the surface planes to avoid module from reset caused by ESD problems.
