User's Manual

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FIBOCOM FM150-NA User Manual Page 43 of 75
Figure 3-7 Recommended Design for Reset Circuit
There are two reset control timings as below:
 Reset timing 1
st
in Figure 3-8, PMU of module internal always on in reset sequence, recommend
using in FW upgrade and module recovery;
 Reset timing 2
nd
in Figure 3-9, PMU of module internal will be off in reset sequence (including whole
power off and power on sequence, t
sd
can refer section 3.3.2), recommend using in system warm boot.
+3.8V
PERST#
RESET#
Module State
InitializationActivation
FCPO#
typical 30s
Baseband reset Activation
t off2
Figure 3-8 Reset timing 1
st