TOBY-L4 series - System Integration Manual
UBX-16024839 - R04
System description
Page 35 of 143
1.6.3
Module reset
TOBY-L4 series modules can be properly reset (rebooted) by:
AT+CFUN command
5
(see the
u-blox AT Commands Manual
uCPU application
6
The methods listed above represent appropriate reset (reboot) events, triggering an appropriate “internal” or
“software” reset of the module: the current parameter settings are saved in the module’s non-volatile memory
and a clean network detach is performed.
An abrupt hardware reset occurs on TOBY-L4 series modules when a low level is applied on the
RESET_N
input
pin. In this case, the current parameter settings are not saved in the module’s non-volatile memory and a clean
network detach is not performed.
It is highly recommended to avoid an abrupt hardware reset of the module by forcing a low level on the
RESET_N
input during modules normal operation: the
RESET_N
line should be set low only if reset via AT
commands or if the uCPU application fails.
As illustrated in Figure 15, the
RESET_N
input pins are equipped with an internal pull-up to the
V_INT
supply.
Baseband
Processor
23
RESET_N
TOBY-L4 series
5
V_INT
Reset
100k
Figure 15: TOBY-L4 series RESET_N input equivalent circuit description
1.6.4
Module / host configuration selection
Host Select pins are not supported by the "50" product version.
TOBY-L4 series modules include two 1.8 V digital pins (
HOST_SELECT0
,
HOST_SELECT1
), which can be
configured for External Interrupt detection or as GPIO by means of the uCPU API.
5
Not supported by "00" product version
6
Not supported by "50" product version
