Ublox TOBY-R2 Series System Integration Manual

Also see for TOBY-R2 Series: User guide

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Ublox TOBY-R2 Series System Integration Manual Manual pdf 14 page image

TOBY-R2 series - System integration manualUBX-16010572 - R10 System description Page 14 of 1511.4 Operating modesTOBY-R2 series modules have several operating modes. The operating modes are defined in Table 4and described in detail in Table 5, providing general guidelines for operation.General Status Operating Mode DefinitionPower-down Not-powered Mode VCC supply not present or below operating range: module is switched off.Power-off Mode VCC supply within operating range and module is switched off.Normal operation Idle mode Module processor core runs with 32 kHz reference generated by the internal oscillator.Active mode Module processor core runs with 26 MHz reference generated by the internal oscillator.Connected mode RF Tx/Rx data connection enabled and processor core runs with 26 MHz reference.Table 4: TOBY-R2 series modules operating modes definitionMode Description Transition between operating modesNot-Powered Module is switched off.Application interfaces are notaccessible.When VCC supply is removed, the modules enter not-powered mode.When in not-powered mode, the modules cannot be switched on byPWR_ON, RESET_N or RTC alarmWhen in not-powered mode, the modules can be switched on byapplying VCC supply (see 1.6.1) so that the modules switch fromnot-powered to active-modePower-Off Module is switched off: normalshutdown by an appropriate power-offevent (see 1.6.2).Application interfaces are notaccessible.When the modules are switched off by an appropriate switch-offevent (see 1.6.2), the modules enter power-off mode fromactive-mode.When in power-off mode, the modules can be switched on byPWR_ON, RESET_N or an RTC alarm.When in power-off mode, the modules enter not-powered mode byremoving VCC supply.Idle Module is switched on with applicationinterfaces temporarily disabled orsuspended: the module is temporarilynot ready to communicate with anexternal device by means of theapplication interfaces as configured toreduce the current consumption.The module enters the low power idle-mode whenever possible if power savingis enabled by AT+UPSV (see u-blox ATcommands manual [2]) reducing currentconsumption (see 1.5.1.5).The CTS output line indicates when theUART interface is disabled/enabled dueto the module idle/active-modeaccording to power saving and HW flowcontrol settings (see 1.9.1.3, 1.9.1.4).Power saving configuration is notenabled by default: it can be enabled byAT+UPSV (see the u-blox AT commandsmanual [2]).The modules automatically switch from the active-mode to low poweridle-mode whenever possible if power saving is enabled (see sections1.5.1.5, 1.9.1.4, 1.9.2.4 and u-blox AT commands manual [2], AT+UPSVcommand).The modules wake up from low power idle-mode to active-mode in thefollowing events: Automatic periodic monitoring of the paging channel for thepaging block reception according to network conditions (see1.5.1.5, 1.9.1.4) Automatic periodic enable of the UART interface to receive / senddata, with AT+UPSV=1 (see 1.9.1.4) Data received over UART, according to HW flow control (AT&K)and power saving (AT+UPSV) settings (see 1.9.1.4) RTS input set ON by the host DTE, with HW flow control disabledand AT+UPSV=2 (see 1.9.1.4) DTR input set ON by the host DTE, with AT+UPSV=3 (see 1.9.1.4) USB detection, applying 5 V (typ.) to VUSB_DET input (see 1.9.2) The connected USB host forces a remote wakeup of the module asUSB device (see 1.9.2.4) The connected u-blox GNSS device forces a wakeup of the moduleusing the GNSS Tx data ready function over GPIO3 (see 1.9.3) The connected SDIO device forces a wakeup of the module asSDIO host (see 1.9.4) A preset RTC alarm occurs (see u-blox AT commands manual [2],AT+CALA)