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FIBOCOM_NL952-NA_Hardware_User_Manual
Page 18 of 57
3.2 Power Supply
The power interface of NL952 module as shown in the following table:
Pin
Pin Name
I/O
Pin Description
DC Parameter
(
V
)
Minimum
Value
Typical
Value
Maximum
Value
2, 4, 70, 72, 74 +3.3V
PI
Power supply input
3.3
3.8
4.4
36
UIM_PWR
PO
USIM power supply
-
1.8V/3V
-
48
UIM2_PWR
PO
USIM power supply
-
1.8V/3V
-
NL952 module uses PCIe interface, according to the PCIe specification, the PCIe Vmain should be used
as the +3.3V power source, not the Vaux. The Vaux is the PCIe backup power source and it is not sufficient
as the power supply. In addition, the DC/DC power supply other than PCIe ports should not be used as
the external power cannot control the module status through the PCIe protocol.
Power Supply
The NL952 module should be powered through the +3.3V pins, and the power supply design is shown in
Figure 3-2:
Figure 3-2 Power Supply Design