5G Module Series
RM520N-GL_Hardware_Design 51 / 84
4.4.2. W_DISABLE2#*
The module 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 can control the GNSS function.
Table 21: GNSS Function Status
A simple voltage level shifter 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 at 1.8 V or 3.3 V voltage level. W_DISABLE1# and
W_DISABLE2# are active LOW signals, and a reference circuit is shown as below.
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