User manual SAGEM TIGR 350R DATASHEET

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Manual abstract: user guide SAGEM TIGR 350RDATASHEET

Detailed instructions for use are in the User's Guide.

[. . . ] Reference Documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 3. Document Modifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 4. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. [. . . ] · UART_DTR signal used to indicate module UART interface is ON. Note d'étude / Technical document : ­ OTL 5696. 1­ / 72740 Edition 0. 2 HILONC- 3GPS APPLICATION NOTE 01/08/20111 - Page 17 / 34 · The UART_DSR signal is used to prevent TIGR 350R from entering sleep mode or to switch between DATA and AT commands or to hang up a call or to wake up the module etc. . . . 3. 5. 4 Partial V24 (RX-TX) Connection of TIGR 350R to host When using only RX/TX instead of the complete V24 link the following schematic can be used: : Partial V24 connection (2 wires) of TIGR 350R to host As UART_DTR is active (low electrical level) once TIGR 350R is switched on, UART_DSR is also active (low electrical level), therefore the AT command "AT+Ksleep" can switch between the two available sleep modesHILONC. As UART_RTS is active (low electrical level) once TIGR 350R is switched on, UART_CTS is also active (low electrical level), therefore the AT command "AT+Ksleep" can switch between the two available sleep modesHILONC. The TIGR 350R's firmware allows activation of UART_RTS during sleep state even when looped to the UART_CTS signal. UART_DCD and UART_RI can remain disconnected and floating when not in use. Note that this configuration does not allow the below signals: · RI signal used when programmed to indicate an incoming voice or data call or incoming SMS etc. . . . · UART_DTR signal used to indicate the module UART interface is ON. · UART_DSR signal used to prevent the TIGR 350R module from entering sleep mode. 3. 6 GPIO There are six GPIOs available on the TIGR 350R. Customer applications can directly access them through appropriate AT commands such as: - Output: pin is set to High or Low state. - Input: pin is read on request and customer application is responded to. As an input different scenarios are possible to cover a maximum range of customer applications: · Synchronous answer to AT command. Customer's application prior to the read request has configured the GPIO to react to falling/rising edges. This mode can be controlled by sending an AT command to the module. 4. 2 Module Power up Starting the TIGR 350R via PWON. 4. 2. 1 PWON Power up To start the module, first power up VBAT, which must be in the range 3. 4V ~ 4. 2V, and must be able to supply 1. 75A during TX bursts. PWON is a low level active signal internally pulled up to a dedicated power domain of 1. 8V. As PWON is internally pulled up, a simple open collector or open drain transistor must be used for ignition. To start the module, a low level pulse must be applied on PWON for 500ms. After a few seconds, the UART_RTS enters active state and the module is ready to receive AT commands. VGPIO is a supply output from the module that can be used to check if the module is active. TBD : Power on sequence TBD : Power off sequence Send AT COMMAND "AT+CPOF" to power off module. 4. 2. 1. 1 IO DC Presence before Power on When VBAT is available but the module has not yet powered up, the following I/O's raise their output. VBACKUP raise to 3V PWON raise to 1. 8V 4. 3 Power on and Sleep Diagrams The 2 diagrams below show the behavior of the module and the DTE during power on and then in sleep modes. TBD : Diagram for power on TBD : Diagram for sleep mode Note d'étude / Technical document : ­ OTL 5696. 1­ / 72740 Edition 0. 2 HILONC- 3GPS APPLICATION NOTE 01/08/20111 - Page 21 / 34 4. 4 Module Power off 4. 4. 1 UART Interface To turn the module off, use the AT command AT+CPOF. If PWON is not pulled down the module will switch to OFF mode after the AT command, otherwise the module restarts immediately (OFF sequence is performed followed by power ON sequence). : Power off sequence for PWON, VGPIO and UART_RTS 4. 4. 2 USB Interface As the module can also be turned on when a USB cable is plugged in, the module turn off sequence requires the USB interface to be OFF or VBUS disconnected once the command is sent and acknowledged by the module. Thus, to turn the module off when USB interface is in use, use the AT command AT+CPOF, then disconnect VBUS signal (unplug the USB cable or use a command switch to switch off VBUS) when the module acknowledges (responds with an OK message) the command, otherwise the module will restart immediately (an OFF sequence is performed followed by a power ON sequence). 4. 5 Sleep Mode The AT command AT+KSLEEP allows configuration of the sleep mode. [. . . ] Reduce the number of electronic components as much as possible (to avoid loss of quality and greater dispersion). Recommendations on customer board layout 8. 1 General recommendations on layout There are many different types of signals in the module which may interfere with each other. Particularly, audio signals are very sensitive to external signals such as VBAT. Therefore it is very important to follow some basic guidelines to avoid signal disruption or abnormal behavior. [. . . ]

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