User's Manual

TOBY-R2 series - System Integration Manual
UBX-16010572 - R04 System description
Page 33 of 147
1.6.3 Module reset
TOBY-R2 series modules can be properly reset (rebooted) by:
 AT+CFUN command (see u-blox AT Commands Manual [2]).
In the case listed above an “internal” or “software” reset of the module is executed: the current parameter
settings are saved in the module’s non-volatile memory and a proper network detach is performed.
An abrupt hardware reset occurs on TOBY-R2 series modules when a low level is applied on RESET_N input pin.
In this case, the current parameter settings are not saved in the module’s non-volatile memory and a proper
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 or
shutdown via AT commands fails or if the module does not provide a reply to a specific AT command
after a time period longer than the one defined in the u-blox AT Commands Manual [2].
As described in Figure 17, the RESET_N input pins are equipped with an internal pull-up to the V_BCKP supply.
Baseband
Processor
23
RESET_N
TOBY-R2 series
3
V_BCKP
Reset
Power
Management
Reset
10k
Figure 17: TOBY-R2 series RESET_N input equivalent circuit description
For more electrical characteristics details see TOBY-R2 series Data Sheet [1].
1.6.4 Module / host configuration selection
Selection of module / host configuration over HOST_SELECT0 and HOST_SELECT1 pins is not supported.
TOBY-R2 series modules include two pins (HOST_SELECT0, HOST_SELECT1) for the selection of the module /
host application processor configuration.