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HUAWEI MU739 HSPA+ LGA Module
Hardware Guide
When SLEEP_STATUS is H, MU739 is in awake status.
When SLEEP_STATUS is L, MU739 is in sleep status.
WAKEUP_OUT Signal
The WAKEUP_OUT signal is used to wake up the AP.
Table 3-3 shows the definition of the WAKEUP_OUT signal.
Figure 3-13 Connections of the WAKEUP_IN and WAKEUP_OUT pins
RESOUT_N
RESOUT_N is an output of the module and is used to reset the external memory MCP.
Once system powers on, the RESOUT_N signal can be routed to the AP processor to
allow the AP to monitor and detect resets of the modem system. During reset this
signal is an output, logic low. RESOUT_N would be monitored by a host processor
GPIO (with internal pull-up).
3.5 USB Interface
The MU739 is compliant with USB 2.0 high speed protocol. The USB interface is
powered from the USB_VBUS (3.3V/5V typical) supply. The USB input/output lines
are compatible with the USB 2.0 VBAT signal specifications. Figure 3-14 shows the
circuit of the USB interface.
Table 3-6 Definition of the USB interface
Pin
No.
23
Issue 01 (2011-08-24)
Pin Name
I/O
USB_ DP
I/O
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Description of the Application Interfaces
Description
USB data signal D+
DC Characteristics (V)
Min
Typical Max
-
-
-
29
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