User's Manual
Table Of Contents
- Contents
- 1 Functional description
- 2 Interfaces
- 3 Pin definition
- 4 Electrical specifications
- 4.1 Absolute maximum rating
- 4.2 Operating conditions
- 4.2.1 Operating temperature range
- 4.2.2 Supply/power pins
- 4.2.3 Current consumption
- 4.2.4 LTE RF characteristics
- 4.2.5 3G RF characteristics
- 4.2.6 2G RF characteristics
- 4.2.7 ANT_DET pin
- 4.2.8 PWR_ON pin
- 4.2.9 RESET_N pin
- 4.2.10 SIM pins
- 4.2.11 USB pins
- 4.2.12 DDC (I2C) pins
- 4.2.13 Generic Digital Interfaces pins
- 5 Mechanical specifications
- 6 Qualification and approvals
- 7 Product handling & soldering
- 8 Default settings
- 9 Labeling and ordering information
- Appendix
- A Glossary
- Related documents
- Revision history
- Contact
TOBY-R2 series - Data Sheet
UBX-16005785 - R06 Interfaces
Page 12 of 41
2.3.3 Module reset
TOBY-R2 series modules can be reset (rebooted) by:
AT+CFUN command (see the u-blox AT Commands Manual [1]). This causes an “internal” or “software”
reset of the module. The current parameter settings are saved in the module’s non-volatile memory and a
proper network detach is performed.
An abrupt “external” or “hardware” reset occurs when a low level is applied to the RESET_N pin, which is
normally set high by an internal pull-up, for a valid time period (see the section 4.2.9). This causes an “external”
or “hardware” reset of the entire module, including the integrated power management unit, except for the RTC
internal block: the V_INT generic digital interfaces supply is switched off and all the digital pins are tri-stated,
but the V_BCKP supply and the RTC block are enabled. The current parameter settings are not saved in the
module’s non-volatile memory and a proper network detach is not performed. The RESET_N line should be
driven by open drain, open collector or contact switch.
2.3.4 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.
2.4 SIM
2.4.1 SIM interface
A SIM card interface is provided on the VSIM, SIM_IO, SIM_CLK, SIM_RST pins: the high-speed SIM/ME
interface is implemented as well as the automatic detection of the required SIM supporting voltage.
Both 1.8 V and 3 V SIM types are supported (1.8 V and 3 V ME). Activation and deactivation with automatic
voltage switch from 1.8 V to 3 V is implemented, according to ISO-IEC 7816-3 specifications. The SIM driver
supports the PPS procedure for baud-rate selection, according to the values proposed by the SIM card/chip.
2.4.2 SIM detection
TOBY-R2 series modules provide the SIM detection function over the GPIO5 pin to sense the SIM card physical
presence (as an optional feature) when the pin of the module is properly connected to the mechanical switch of
the SIM car holder (for more details see the TOBY-R2 series System Integration Manual [2]).