Huawei MU509 - Control Interface Design Guide

HUAWEI 30 mm × 30 mm LGA Module
Hardware Migration Guide
LGA Interface Differences
Issue 08 (2016-12-12)
HUAWEI Proprietary and Confidential
Copyright © HUAWEI Technologies Co., Ltd.
21
2.2.2 Control Interface Design Guide
WAKEUP_IN
The host can control LGA module to enter the sleep state through the WAKEUP_IN
pin.
When WAKEUP_IN pin is in high level, the module is in the wakeup state.
When WAKEUP_IN pin is in low level, MU509/MC509 will be forced into sleep state;
MU609/ME209u-526/ME909u/MU709/ME909s will not be forced but be allowed into
sleep state instead.
If WAKEUP_IN pin is floated, MU509/MC509 will keep high level internally, while
MU609/ME209u-526/ME909u/MU709/ME909s will keep low level internally. For
ME209u-526 and ME909u, WAKEUP_IN pin must be connected if you want to
normally use the High-Speed UART in future.
Table 2-2 Differences of WAKEUP_IN interface
Pin
No.
Interface
Name
MU509
MC509
MU609
ME209u
-526
ME909u
MU709
ME909s
11
Control
WAKEUP_IN
CMOS 2.6 V
CMOS 1.8 V
Figure 2-3 The recommended connection of WAKEUP_IN pin
WAKEUP_IN
LGA
Micro
Control
(DTE)
R1
R4
R3
R2
pin 32
pin 31
pin 11
2.6 V
1.8 V
0
0
VCC_EXT
Q1
HOST_CONTRO L
For MC509 and MU509, install R1, R3, and do not install R2;
For MU609 , ME209u-526, ME909u, MU709 and ME909s, install R2, R3, and do not install R1.
R4 depends on the DTE GPIO driver.
NPN
b
c
e
R4 depends on the actual DTE requirements.
WAKEUP_OUT
The LGA module can wake up the host through the WAKEUP_OUT. To implement
compatibility of the signal level, it is recommended that you connect the pin based on
the circuit diagram shown in Table 2-3 .