Fibocom L830-EB - 3.3.1 Module Start-Up

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L830-EB Hardware User Manual Page 18 of 39
3.3.1 Module Start-Up
3.3.1.1 Start-up Circuit
The FULL_CARD_POWER_OFF# pin needs an external 3.3V or 1.8V pull up for booting up. The
VDD(3.3V/1.8V) should be provided from the external circuit. Two methods for module starting up:
 AP (Application Processor) controls the module start-up, and the circuit design is shown in Figure
3-4:
 Automatically start-up when powered on, and the circuit design is shown in Figure 3-5:
Figure 3-4 Circuit for Module Start-up Controlled by AP
Figure 3-5 Circuit for Automatic Start-up