Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved.
FIBOCOM_NL952-NA_Hardware_User_Manual
Page 38 of 57
BODYSAR
The NL952 module supports Body SAR function by detecting the DPR pin. The voltage level of DPR is
high by default, and when the SAR sensor detects the closing human body, the DPR signal will be pulled
down. As the result, the module then lowers down its emission power to its default threshold value, thus
reducing the RF radiation on the human body. The threshold of emission power can be set by the AT
Commands. The definition of DPR signal as shown in the following table:
DPR signal
Function
High/Floating
The module keeps the default emission power
Low
Lower the maximum emission power to the threshold value of the module.
PCIe_BOOT_DISABLE
Module provides USB/PCIe as IPC interface, the PCIe_BOOT_DISABLE signal is configured by host. If
use PCIe interface as IPC interface, keep the signal Hi-Z/Floating. If use USB as IPC interface, connect
it to 1.8V pull up with 4.7K ohm resistor. The definition of PCIe boot disable signal as shown in the
following table:
PCIe_BOOT_DISABLE signal Function
High
USB boot
,
Reserved
Hi-Z/Floating
PCIe early boot
,
Reserved
ANT_CONFIG
NL952 module can be configured to support dual antennas or 4 antennas by detecting the
ANT_CONFIG pin. ANT_CONFIG is an input port which is pulled high internal in default. When
ANT_CONFIG is high level, then module supports dual antennas (Main & D/G ANT). When module
detects low level of ANT_CONFIG, then module will be configured to support 4 antennas. The definition
of ANT_CONFIG signal is shown as below table:
ANT_CONFIG signal
Function
High/Floating
Support dual antennas(Main & D/G ANT)
,
Reserved
Low
Support 4 antennas
,
Reserved
3.8 ANT Tunable Interface (Reserved)
The module supports ANT Tunable interfaces with two different control modes, i.e. MIPI interface and 4bit
GPO interface. Through cooperating with external antenna adapter switch via ANT Tunable, it can flexibly
configure the bands of LTE antenna to improve
the antenna’s working efficiency and save space for the