5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 42 / 79
Table 14: RF Function Status
3.11.2. W_DISABLE2#
RM505Q-AE 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
A simple 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 a 1.8 V or 3.3 V voltage level. Signals from W_DISABLE1# and
W_DISABLE2# are active low, and a reference circuit is presented below.
W_DISABLE1# Logic Level
AT Commands
RF Function Status
High
AT+CFUN=1
Enabled
High
AT+CFUN=0
AT+CFUN=4
Disabled
Low
AT+CFUN=0
AT+CFUN=1
AT+CFUN=4
Disabled
W_DISABLE2# Logic Level
AT Commands
GNSS Function Status
High
AT+QGPS=1
Enabled
High
AT+QGPSEND
Disabled
Low
AT+QGPS=1
Low
AT+QGPSEND