Huawei MU736 - Bodysar_N Pin

HUAWEI MU736 HSPA+ M.2 Module
Hardware Guide
Description of the Application Interfaces
Issue 05 (2014-01-14)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
31
Figure 3-19 Connections of the Wake_On_WWAN# pin
3.4.8 BodySAR_N Pin
MU736 provides an input pin BodySAR_N for BodySAR detection.
It is pulled up internally and when it is pulled low by the proximity sensor output or
controlling signal from host systems, the Tx power reduction actions will be triggered.
Table 3-8 Function of the BodySAR_N pin
No.
BodySAR_N
Function
1
Low
MAX TX power will be back off by setting through AT
command
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, there are some
essential preconditions for this hardware solution.
MU736 cannot provide any control signal for the proximity sensor. Any control or
programming required by the proximity sensor should be handled by the host side.