Huawei ME906s LTE M.2 - USIM_DET Pin

HUAWEI ME906s LTE M.2 Module
Hardware Guide
Description of the Application Interfaces
Issue 05 (2019-03-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
33
No.
BodySAR_N
Function
2
High
Max. TX power will NOT be backed off (default).
3
Floating
Max. TX power will NOT be backed off.
If BodySAR_N pin is used to monitor the proximity sensor output directly, there are
some essential preconditions for this hardware solution.
ME906s cannot provide any control signal for the proximity sensor, and any control or
programming required by the proximity sensor should be handled by the host side.
Figure 3-17 Connections of the BodySAR_N pin
It is recommended not to add a diode on the BodySAR_N pin outside the module.
3.4.9 USIM_DET Pin
ME906s supports USIM hot swap function.
ME906s provides an input pin (USIM_DET) to detect whether the USIM card is
present or not. This pin is a level trigger pin.
Table 3-9 Function of the USIM_DET pin
No.
USIM_DET
Function
1
High level
USIM card insertion.
If the USIM card is present, USIM_DET should be High.
2
Low level
USIM card removal.
If the USIM card is absent, USIM_DET should be Low.
Module
(Modem)
BB Chip
1.8V
BodySAR_N
VCC From Host
10 kΩ
Proximity
sensor
USB Host AP