Product Info

5G Module Series
RM500Q-AE&RM502Q-AE Hardware Design
RM500Q-AE&RM502Q-AE_Hardware_Design 43 / 83
Table 14: RF Function Status
3.11.2. W_DISABLE2#*
RM500Q-AE&RM502Q-AE 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 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 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.
W_DISABLE1# Level
AT Commands
RF Function Status
High Level
AT+CFUN=1
Enabled
High Level
AT+CFUN=0
AT+CFUN=4
Disabled
Low Level
AT+CFUN=0
AT+CFUN=1
AT+CFUN=4
Disabled
W_DISABLE2# Level
AT Commands
GNSS Function Status
High Level
AT+QGPS=1
Enabled
High Level
AT+QGPSEND
Disabled
Low Level
AT+QGPS=1
Low Level
AT+QGPSEND