W_Disable2 - Quectel EM05-G Hardware Design

4.4.2. W_DISABLE2#*

EM05-G provides a W_DISABLE2# pin to disable or enable the GNSS function. The W_DISABLE2# pin
is pulled up by default. Driving it low will disable the GNSS function. The combination of W_DISABLE2#
pin and AT commands controls the GNSS function.
Table 15: GNSS Function Status
W_DISABLE2# Logic Level
High Level
High Level
Low Level
Low Level
A simple voltage-level translator based on diodes is used on W_DISABLE1# pin and W_DISABLE2# pin
which are pulled up to a 1.8 V voltage in the module, as shown in the following figure, so the control
signals (GPIO) of the host device could be 1.8 V or 3.3 V voltage level. W_DISABLE1# and
W_DISABLE2# are active LOW, and a reference circuit is presented below.
Host
GPIO
GPIO
NOTE: The voltage level of VCC_IO_HOST could be 1.8 V or 3.3 V typically.
EM05-G_Hardware_Design
AT Commands
AT+QGPS=1
AT+QGPSEND
AT+QGPS=1
AT+QGPSEND
VCC_IO_HOST
R3 R4
10k 10k
Figure 21: W_DISABLE1# and W_DISABLE2# Reference Circuit
LTE Standard Module Series
EM05-G Hardware Design
GNSS Function Status
Enabled
Disabled
VDD 1.8 V
W_DISABLE2#
26
W_DISABLE1#
8
Module
R1 R2
10k 10k
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