Control Interface Design Guide - Huawei MU509 Hardware Migration Manual

HUAWEI 30 mm × 30 mm LGA Module
Hardware Migration Guide

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 Interface Name
No.
11 Control WAKEUP_IN
Figure 2-3 The recommended connection of WAKEUP_IN pin
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 drive
LGA
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 .
Issue 08 (2016-12-12)
MU509
CMOS 2.6 V
r.
R1
0
pin 31
2.6 V
R2
0
pin 32
1.8 V
WAKEUP_IN
pin 11
R4 depends on the actual DTE requirements.
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MC509 MU609 ME209u
-526
CMOS 1.8 V
VCC_EXT
R3
c
Q1 R4
b
NPN
e
LGA Interface Differences
ME909u MU709
Micro
Control
(DTE)
HOST_CONTRO L
ME909s
21