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TOBY-R2 series - System integration manual

UBX-16010572 - R10

Design-in

Page 107 of 151

2.6.3

DDC (I2C) interface

2.6.3.1

Guidelines for DDC (I2C) circuit design

General considerations

☞

Communication with u-blox GNSS receivers over DDC (I2C) is not supported by
TOBY-R200-02B-00 and TOBY-R202-02B-00 type numbers.

☞

“GNSS RTC sharing” function is not supported by “02” / "42" / "82" product versions.

The DDC I2C-bus master interface can be used to communicate with u-blox GNSS receivers and other
external I2C-bus slaves as an audio codec. Beside the general considerations reported below, see:



the following parts of this section for specific guidelines for the connection to u-blox GNSS
receivers



the section

for an application circuit example with an external audio codec I2C-bus slave.

To be compliant with the I2C bus specifications, the module bus interface pads are open drain output
and pull up resistors must be mounted externally. Resistor values must conform to I2C bus
specifications

: for example, 4.7 k



resistors can be commonly used. Pull-ups must be connected

to a supply voltage of 1.8 V (typical), since this is the voltage domain of the DDC pins which are not
tolerant to higher voltage values (e.g. 3.0 V).

☞

Connect the DDC (I2C) pull-ups to the V_INT 1.8 V supply source, or another 1.8 V supply source
enabled after V_INT (e.g., as the GNSS 1.8 V supply present in

application circuit), as any

external signal connected to the DDC (I2C) interface must not be set high before the switch-on of
the V_INT supply of DDC (I2C) pins, to avoid latch-up of circuits and let a proper boot of the module.

The signal shape is defined by the values of the pull-up resistors and the bus capacitance. Long wires
on the bus will increase the capacitance. If the bus capacitance is increased, use pull-up resistors with
nominal resistance value lower than 4.7 k



, to match the I2C bus specifications

regarding rise and

fall times of the signals.

☞

Capacitance and series resistance must be limited on the bus to match the I2C specifications
(1.0

µ

s is the maximum allowed rise time on the SCL and SDA lines): route connections as short as

possible.

☞

If the pins are not used as DDC bus interface, they can be left unconnected.

☞

ESD sensitivity rating of the DDC (I2C) pins is 1 kV (Human Body Model according to JESD22-A114).
Higher protection level could be required if the lines are externally accessible and it can be achieved
by mounting an ESD protection (e.g. EPCOS CA05P4S14THSG varistor array) close to accessible
points.

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Содержание TOBY-R2 Series

Страница 1: ...d the system integration of TOBY R2 series multi mode cellular modules These modules are a complete cost efficient and performance optimized LTE Cat 1 3G 2G multi mode solution covering up to four LTE...

Страница 2: ...nd of life TOBY R200 02B 02 30 31 A02 01 UBX 18018067 End of life TOBY R200 02B 03 30 31 A02 02 UBX 18057549 End of life TOBY R200 02B 04 30 33 A02 02 UBX 19011731 Mass production TOBY R200 42B 00 30...

Страница 3: ...onfiguration selection 31 1 7 Antenna interface 32 1 7 1 Antenna RF interfaces ANT1 ANT2 32 1 7 2 Antenna detection interface ANT_DET 34 1 8 SIM interface 34 1 8 1 SIM interface 34 1 8 2 SIM detection...

Страница 4: ...configuration selection 84 2 4 Antenna interface 85 2 4 1 Antenna RF interfaces ANT1 ANT2 85 2 4 2 Antenna detection interface ANT_DET 92 2 5 SIM interface 94 2 5 1 Guidelines for SIM circuit design...

Страница 5: ...f ultrasonic processes 130 4 Approvals 131 4 1 Product certification approval overview 131 4 2 US Federal Communications Commission notice 132 4 2 1 Safety warnings review the structure 132 4 2 2 Decl...

Страница 6: ...TOBY R2 series System integration manual UBX 16010572 R10 Page 6 of 151 Revision history 150 Contact 151...

Страница 7: ...data centric applications The unique combination of performance and flexibility make these modules ideally suited for medium speed M2M applications such as smart energy gateways remote access video ca...

Страница 8: ...M 850 MHz o E GSM 900 MHz o DCS 1800 MHz o PCS 1900 MHz LTE Power Class Class 3 23 dBm UMTS HSDPA HSUPA Power Class Class 3 24 dBm GSM GPRS GMSK Power Class Class 4 33 dBm for GSM E GSM band Class 1 3...

Страница 9: ...odule via power amplifier PA SAW band pass filters band specific duplexer and antenna switch Dual receiving paths are implemented according to LTE Receiver Diversity radio technology supported by the...

Страница 10: ...ification schemes See section 1 5 1 for functional description requirements See section 2 2 1 for external circuit design in GND 2 30 32 44 46 69 73 74 76 78 79 80 82 83 85 86 88 90 92 152 N A Ground...

Страница 11: ...for functional description See section 2 5 for external circuit design in SIM_CLK 56 O SIM clock 3 25 MHz clock output for 1 8 V 3 V SIM See section 1 8 for functional description See section 2 5 for...

Страница 12: ...f the USB interface is not used by the Host Processor Test Point for diagnostic FW update is recommended See section 1 9 2 for functional description See section 2 6 2 for external circuit design in U...

Страница 13: ...t design in I2S_WA 50 I O I O I2S word alignment GPIO I2S word alignment alternatively configurable as GPIO I2S interface not supported by 42 82 product versions See sections 1 10 and 1 12 for functio...

Страница 14: ...supply Idle Module is switched on with application interfaces temporarily disabled or suspended the module is temporarily not ready to communicate with an external device by means of the application...

Страница 15: ...y AT UPSV see sections 1 9 1 4 1 9 2 4 and u blox AT commands manual 2 When a data or voice connection is initiated the module enters connected mode from active mode Connected mode is suspended if Tx...

Страница 16: ...1 2 to the low current consumption during low power idle mode with power saving enabled as described in section 1 5 1 5 TOBY R200 modules provide separate supply inputs over the three VCC pins VCC pi...

Страница 17: ...ighest averaged VCC current consumption value in connected mode conditions specified in TOBY R2 data sheet 1 The maximum average current consumption can be greater than the specified value according t...

Страница 18: ...figures are quite less high than the one in the low bands due to 3GPP transmitter output power specifications During a GSM call current consumption is not so significantly high in receiving or in mon...

Страница 19: ...s with a periodicity of 4 615 ms width of 1 frame 8 slots bursts so with a 1 2 duty cycle according to 2G TDMA If the module is in GPRS connected mode in the 1800 or 1900 MHz bands the current consump...

Страница 20: ...the 3G that differs from the TDMA implemented in the 2G case In the worst scenario corresponding to a continuous transmission and reception at maximum output power approximately 250 mW or 24 dBm the a...

Страница 21: ...transmission and reception are continuously enabled in FDD In the worst scenario corresponding to a continuous transmission and reception at maximum output power approximately 250 mW or 24 dBm the ave...

Страница 22: ...me period between two paging block receptions is defined by the network This is the paging period parameter fixed by the base station through broadcast channel sent to all users on the same serving ce...

Страница 23: ...ging period than that in the power saving mode Figure 10 illustrates a typical example of the module current consumption profile when power saving is disabled In such case the module is registered wit...

Страница 24: ...s of Supply Power pins table in TOBY R2 series data sheet 1 The RTC can be supplied from an external back up battery through the V_BCKP when the main module voltage supply is not applied to the VCC pi...

Страница 25: ...the cellular module as described in Figure 12 The output of this regulator is enabled when the module is switched on and it is disabled when the module is switched off Baseband Processor 70 VCC 71 VCC...

Страница 26: ...when the external application releases the PWR_ON input pin from the low logic level after that the VCC supply voltage stabilizes at its proper nominal value within the operating range When the TOBY...

Страница 27: ...al Tristate Floating Internal Reset OFF ON Start of interface configuration Module interfaces are configured Start up event Figure 14 TOBY R2 series switch on sequence description The greeting text ca...

Страница 28: ...PWROFF command waiting the command response for a proper time period see u blox AT commands manual 2 and then a proper VCC supply has to be held at least until the end of the modules internal switch o...

Страница 29: ...switch on event does not occur e g applying a proper low level to the PWR_ON input or applying a proper low level to the RESET_N input and enters not powered mode if the supply is removed from the VC...

Страница 30: ...pply V_BCKP Then the module remains in power off mode as long as a switch on event does not occur e g applying a proper low level to the PWR_ON input or applying a proper low level to the RESET_N inpu...

Страница 31: ...ule 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 r...

Страница 32: ...the antenna connected to ANT1 port depends on the operating bands of the used cellular module and the used mobile network Return Loss S11 10 dB VSWR 2 1 recommended S11 6 dB VSWR 3 1 acceptable The R...

Страница 33: ...adiated performance requirements as the TIS specified by applicable related certification schemes Table 8 Summary of secondary Rx antenna RF interface ANT2 requirements Item Requirement Remark Efficie...

Страница 34: ...ected SIM card or chip Both 1 8 V and 3 V SIM types are supported Activation and deactivation with automatic voltage switch from 1 8 V to 3 V are implemented according to ISO IEC 7816 3 specifications...

Страница 35: ...3 and FW update application note 5 FW upgrades by means of the u blox EasyFlash tool see FW update application note 5 Trace log capture diagnostic purpose UART interface provides RS 232 functionality...

Страница 36: ...0 b s 19 200 b s 38 400 b s 57 600 b s 115 200 b s this is the default value when one shot autobauding is disabled 230 400 b s 460 800 b s 921 600 b s 3 000 000 b s 3 250 000 b s 6 000 000 b s 6 500 0...

Страница 37: ...Channel 1 5 AT commands data connection Channel 6 GNSS tunneling8 Table 10 Default UART interface configuration 1 9 1 3 UART signals behavior At the module switch on before the UART interface initiali...

Страница 38: ...nication character see section 1 9 1 4 and in particular the sub section Wake up via data reception for further details RTS signal behavior The hardware flow control input RTS line is set by default t...

Страница 39: ...s it is by default the DCD module output line is set by default to the OFF state high level at UART initialization The module then sets the DCD line according to the carrier detect status ON if the ca...

Страница 40: ...efault to the OFF state high level at UART initialization The RI line can notify an incoming call the RI line is switched from the OFF state to the ON state with a 4 1 duty cycle and a 5 s period ON f...

Страница 41: ...r saving and also the UART behavior in relation to the power saving The conditions for the module entering low power idle mode also depend on the UART power saving configuration as the module does not...

Страница 42: ...e data is lost 2 Disabled AT K0 OFF ON or OFF Data sent by the DTE is lost by the module Data sent by the module is correctly received by the DTE if it is ready to receive data otherwise data is lost...

Страница 43: ...ed synchronously with some paging receptions UART is enabled concurrently to a paging reception and then as data has not been received or sent UART is disabled until the first paging reception that oc...

Страница 44: ...ong as the DTR input line is set to ON If the module needs to transmit some data e g URC UART is temporarily enabled to send data The module automatically enters the low power idle mode whenever possi...

Страница 45: ...her characters must be sent after the wake up time of 20 ms If this condition is satisfied the module DCE recognizes characters The module will disable the UART after 2000 GSM frames from the latest d...

Страница 46: ...tion note 11 Channel 0 Multiplexer control Channel 1 5 AT commands data connection Channel 6 GNSS data tunneling The GNSS data tunneling channel is not supported by the TOBY R200 02B 00 and the TOBY R...

Страница 47: ...duct ID combination included in the USB device descriptor according to the USB 2 0 specifications 6 If the USB is connected to the host before the module is switched on or if the module is reset reboo...

Страница 48: ...face 9 Data EndPoint Transfer Bulk EndPoint Transfer Bulk Function SAP Interface 10 Abstract Control Model EndPoint Transfer Interrupt Interface 11 Data EndPoint Transfer Bulk EndPoint Transfer Bulk F...

Страница 49: ...of the other interfaces see 1 9 1 4 The modules are capable of USB remote wake up signaling i e it may request the host to exit suspend mode or selective suspend by using electrical signaling to indic...

Страница 50: ...an handle GNSS receiver power on off GNSS supply enable function provided by GPIO2 improves the positioning receiver power consumption When the GNSS functionality is not required the positioning recei...

Страница 51: ...CMD designed to communicate with an external u blox short range Wi Fi module the cellular module acts as an SDIO host controller which can communicate over the SDIO bus with a compatible u blox short...

Страница 52: ...is set high low with a 50 duty cycle high for 16 clock cycles low for 16 clock cycles according to the 32 clock cycles frame length The I2S interface can be alternatively set in different roles by I2S...

Страница 53: ...ver connected to the module is ready for sending data by the DDC I2C GPIO3 GPIO3 GNSS RTC sharing15 RTC synchronization signal to the u blox GNSS receiver connected to the cellular module GPIO4 SIM ca...

Страница 54: ...tion detection i e jamming detection is not supported by 02 42 82 product versions In real network situations modules can experience various kind of out of coverage conditions limited service conditio...

Страница 55: ...processor via USB UART serial interface is forwarded to the FTP server for FTP without Direct Link mode the data is read from the module s Flash File System When Direct Link is used for a FTP file tr...

Страница 56: ...er suite Automatic The cipher suite will be negotiated in the handshake process Trusted root certificate internal name None No certificate will be used for the server authentication Expected server ho...

Страница 57: ...bearers supported by the network With the BIP for Over the Air SIM provisioning the data transfer from and to the SIM uses either an already active PDP context or a new PDP context established with th...

Страница 58: ...through cellular information CellLocate u blox CellLocate enables the estimation of device position based on the parameters of the mobile network cells visible to the specific device To estimate its p...

Страница 59: ...on estimated from CellLocate The choice depends on which positioning method provides the best and fastest solution according to the user configuration exploiting the benefit of having multiple and com...

Страница 60: ...nly operation 1 14 13 Firmware update Over AT FOAT This feature allows upgrading the module firmware over USB UART serial interfaces using AT commands The UFWUPD AT command triggers a reboot followed...

Страница 61: ...range Temperature measurement is done inside the cellular module the measured value could be different from the environmental temperature Ta Warning area t 1 t 1 t 2 t 2 Valid temperature range Safe...

Страница 62: ...ice down Yes No Yes Yes No No No Yes Send shutdown notification Feature enabled full logic or indication only IF Full Logic Enabled Feature disabled no action Temperature is within normal operating ra...

Страница 63: ...AT UPSV command for the complete description of the AT UPSV command see the u blox AT commands manual 2 When power saving is enabled the module automatically enters the low power idle mode whenever po...

Страница 64: ...vided in the relative section 2 6 2 for schematic and layout design 4 SIM interface VSIM SIM_CLK SIM_IO SIM_RST pins Accurate design is required to guarantee SIM card functionality reducing the risk o...

Страница 65: ...ailable Figure 27 VCC supply concept selection The switching step down regulator is the typical choice when the available primary supply source has a nominal voltage much higher e g greater than 5 V t...

Страница 66: ...rgy required by the module during a 2G Tx slot can be provided by an appropriate bypass tank capacitor or a super capacitor with very large capacitance and very low ESR placed close to the module VCC...

Страница 67: ...rrent with low output ripple and with fixed switching frequency in PWM mode operation greater than 1 MHz 12V C5 R3 C4 R2 C2 C1 R1 VIN RUN VC RT PG SYNC BD BOOST SW FB GND 6 7 10 9 5 C6 1 2 3 8 11 4 C7...

Страница 68: ...urata C2 100 F Capacitor Tantalum B_SIZE 20 6 3V 15m T520B107M006ATE015 Kemet C3 5 6 nF Capacitor Ceramic X7R 0402 10 50 V GRM155R71H562KA88 Murata C4 6 8 nF Capacitor Ceramic X7R 0402 10 50 V GRM155R...

Страница 69: ...m 2 3 V to 2 8 V in less than 4 ms to switch on the modules by applying VCC supply The modules can be otherwise switched on by forcing a low level on the RESET_N pin during the VCC rising edge and the...

Страница 70: ...006ATE045 KEMET R1 27 k Resistor 0402 5 0 1 W RC0402JR 0727KL Yageo Phycomp R2 4 7 k Resistor 0402 5 0 1 W RC0402JR 074K7L Yageo Phycomp U1 LDO Linear Regulator ADJ 3 0 A LP38501ATJ ADJ NOPB Texas Ins...

Страница 71: ...on the application board and battery pack should also be considered and minimized cabling and routing must be as short as possible to minimize power losses Three pins are allocated to VCC supply Seve...

Страница 72: ...le battery connector is directly connected to the supply pins Higher protection level can be achieved by mounting an ESD protection e g EPCOS CA05P4S14THSG varistor close to accessible point 2 2 1 7 A...

Страница 73: ...tery charging circuit TOBY R2 series modules do not have an on board charging circuit Figure 34 provides an example of a battery charger design suitable for applications that are battery powered with...

Страница 74: ...H150JA01 Murata D1 D2 Low Capacitance ESD Protection CG0402MLE 18G Bourns R1 R2 24 k Resistor 0402 5 0 1 W RC0402JR 0724KL Yageo Phycomp R3 3 3 k Resistor 0402 5 0 1 W RC0402JR 073K3L Yageo Phycomp R4...

Страница 75: ...supply voltage to the module regulated from the external main primary source allowing immediate system operation even under missing or deeply discharged battery the integrated switching step down regu...

Страница 76: ...k NTC Various manufacturer C1 C6 22 F Capacitor Ceramic X5R 1210 10 25 V GRM32ER61E226KE15 Murata C2 C4 C10 100 nF Capacitor Ceramic X7R 0402 10 16 V GRM155R61A104KA01 Murata C3 1 F Capacitor Ceramic...

Страница 77: ...e Very low RDS ON for example less than 50 m to minimize voltage drops Adequate maximum Drain current see TOBY R2 series data sheet 1 for module consumption figures Low leakage current to minimize the...

Страница 78: ...connecting to the modules in the worst case Shielding of switching DC DC converter circuit or at least the use of shielded inductors for the switching DC DC converter may be considered since all swit...

Страница 79: ...C1 a 3 V_BCKP R2 TOBY R2 series C2 superCap b 3 V_BCKP D3 TOBY R2 series B3 c 3 V_BCKP Figure 38 Real time clock supply V_BCKP application circuits a using a 100 F capacitor to let the RTC run for 80...

Страница 80: ...t depending on the duration of the positioning VCC outage and to maintain the configuration settings saved in the backup RAM Refer to section 2 6 3 for more details regarding the application circuit w...

Страница 81: ...red Do not apply loads which might exceed the limit for maximum available current from V_INT supply see the TOBY R2 series data sheet 1 as this can cause malfunctions in internal circuitry Since the V...

Страница 82: ...R_ON input from an application processor as the pin is equipped with an internal active pull up resistor to the V_BCKP supply as described in Figure 39 A compatible push pull output of an application...

Страница 83: ...ull up to V_BCKP supply as described in Figure 40 A compatible push pull output of an application processor can also be used In any case take care to set the proper level in all the possible scenarios...

Страница 84: ...of the module If the external signals connected to the cellular module cannot be tri stated or set low insert a multi channel digital switch e g TI SN74CB3Q16244 TS5A3159 or TS5A63157 between the two...

Страница 85: ...ot imply physical restriction to the design of the PCB where the TOBY R2 series module is mounted o The radiation performance mainly depends on the antennas It is required to select antennas with opti...

Страница 86: ...ng appropriate gain figure i e combined antenna directivity and efficiency figure so that the electromagnetic field radiation intensity do not exceed the regulatory limits specified in some countries...

Страница 87: ...ribed 35 m 35 m 35 m 35 m 270 m 270 m 760 m L1 Copper L3 Copper L2 Copper L4 Copper FR 4 dielectric FR 4 dielectric FR 4 dielectric 380 m 500 m 500 m Figure 42 Example of 50 coplanar waveguide transmi...

Страница 88: ...below 200 m to reduce parasitic capacitance to ground The transmission lines width and spacing to GND must be uniform and routed as smoothly as possible avoid abrupt changes of width and spacing to G...

Страница 89: ...ed by an antenna manufacturer providing the best possible return loss or V S W R Provide a ground plane large enough according to the relative integrated antenna requirements The ground plane of the a...

Страница 90: ...Hz 40 0 x 6 0 x 5 0 mm Taoglas PCS 06 A Havok GSM WCDMA LTE SMD Antenna 698 960 MHz 1710 2170 MHz 2500 2690 MHz 42 0 x 10 0 x 3 0 mm Antenova SR4L002 Lucida GSM WCDMA LTE SMD Antenna 698 960 MHz 1710...

Страница 91: ...waterproof IP67 rated with cable and SMA M 698 960 MHz 1710 2170 MHz 2400 2700 MHz 205 8 x 58 x 12 4 mm Laird Tech TRA6927M3PW 001 GSM WCDMA LTE screw mount antenna with N type F 698 960 MHz 1710 2170...

Страница 92: ...GHz LQG15HS68NJ02 Murata R2 R3 15 k Resistor for Diagnostic Various Manufacturers Table 35 Suggested parts for antenna detection circuit on application PCB and diagnostic circuit on antennas assembly...

Страница 93: ...e the expected range may indicate an improper connection damaged antenna or wrong value of antenna load resistor for diagnostic Reported value could differ from the real resistance value of the diagno...

Страница 94: ...e for applications requiring a change of SIM card during the product lifetime A SIM card holder can have 6 or 8 positions if a mechanical card presence detector is not provided or it can have 6 2 or 8...

Страница 95: ...ce i e less than 10 pF ESD protection e g Tyco PESD0402 140 on each externally accessible SIM line close to each relative pad of the SIM connector ESD sensitivity rating of the SIM interface pins is 1...

Страница 96: ...ise time on data and reset lines TOBY R2 series 59 VSIM 57 SIM_IO 56 SIM_CLK 58 SIM_RST SIM CHIP SIM Chip Bottom View contacts side C1 VPP C6 VCC C1 IO C7 CLK C3 RST C2 GND C5 C2 C3 C5 U1 C4 2 8 3 6 7...

Страница 97: ...itivity rating of the SIM interface pins is 1 kV HBM so that according to the EMC ESD requirements of the custom application higher protection level can be required if the lines are externally accessi...

Страница 98: ...tch between more than 2 SIM a circuit similar to the one described in Figure 49 can be implemented For a 4 SIM circuit use a proper 4 throw switch instead of the suggested 2 throw switches Follow thes...

Страница 99: ...implemented 2 5 2 Guidelines for SIM layout design The layout of the SIM card interface lines VSIM SIM_CLK SIM_IO SIM_RST may be critical if the SIM card is placed far away from the TOBY R2 series mo...

Страница 100: ...Application Processor DTE is used then it is recommended to connect the 1 8 V UART interface of the module DCE by means of appropriate unidirectional voltage translators using the module V_INT output...

Страница 101: ...ed then it is recommended to connect the 1 8 V UART interface of the module DCE by means of appropriate unidirectional voltage translators using the module V_INT output as 1 8 V supply for the voltage...

Страница 102: ...ial V 24 link 5 wire in the DTE DCE serial communication 1 8V DTE If a 3 0 V Application Processor DTE is used then it is recommended to connect the 1 8 V UART interface of the module DCE by means of...

Страница 103: ...TXD 13 DTR 17 RXD 14 RTS 15 CTS 10 DSR 11 RI 12 DCD GND 0 TP 0 TP 0 TP TP Figure 56 UART interface application circuit with partial V 24 link 3 wire in the DTE DCE serial communication 1 8V DTE If a...

Страница 104: ...ly is not recommended During command mode the DTE must send to the module a wake up character or a dummy AT before each command line see section 1 9 1 4 for the complete description but during data mo...

Страница 105: ...n the line connected to this pin as described in Figure 58 and Table 44 The USB interface pins ESD sensitivity rating is 1 kV Human Body Model according to JESD22 A114F Higher protection level could b...

Страница 106: ...ose as possible to 90 Ensure the common mode characteristic impedance ZCM is as close as possible to 30 Consider design rules for USB_D USB_D similar to RF transmission lines being them coupled differ...

Страница 107: ...ich are not tolerant to higher voltage values e g 3 0 V Connect the DDC I2C pull ups to the V_INT 1 8 V supply source or another 1 8 V supply source enabled after V_INT e g as the GNSS 1 8 V supply pr...

Страница 108: ...ule is connected to the V_BCKP backup supply input pin of the GNSS receiver to provide the supply for the GNSS real time clock and backup RAM when the VCC supply of the cellular module is within its o...

Страница 109: ...eet 1 Additional filtering may be needed to properly supply an external LNA depending on the characteristics of the used LNA adding a series ferrite bead and a bypass capacitor e g the Murata BLM15HD1...

Страница 110: ...pply The V_BCKP supply output of the cellular module can be directly connected to the V_BCKP backup supply input pin of the GNSS receiver as in the application circuit for a u blox 1 8 V GNSS receiver...

Страница 111: ...ll control of the Wi Fi module from any host processor because Wi Fi control messages are relayed to the Wi Fi module via the dedicated SDIO interface Further guidelines for SDIO interface circuit des...

Страница 112: ...o 12 kHz o 16 kHz o 22 05 kHz o 24 kHz o 32 kHz o 44 1 kHz o 48 kHz The same serial clock frequency o 17 x I2S_sample_rate or 18 x I2S_sample_rate in PCM short alignment mode or o 16 x 2 x I2S_sample...

Страница 113: ...o codec The V_INT output supplies the external audio codec defining proper digital interfaces voltage level Additional components are provided for EMC and ESD immunity a 10 nF bypass capacitor and a s...

Страница 114: ...avoid latch up of circuits and allow a proper boot of the module If the external signals connected to the cellular module cannot be tri stated or set low insert a multi channel digital switch e g TI...

Страница 115: ...crophone should be designed for GSM applications which typically have internal built in bypass capacitor for RF very close to active device If the integrated FET detects the RF burst the resulting DC...

Страница 116: ...rporation T1 NPN BJT Transistor BC847 Infineon Table 49 Components for network indication application circuit Use transistors with at least an integrated resistor in the base pin or otherwise put a 10...

Страница 117: ...urce for VCC Make sure that the module analog parts and RF circuits are clearly separated from any possible source of radiated energy In particular digital circuits can radiate digital frequency harmo...

Страница 118: ...m G 1 10 mm M1 1 80 mm P3 2 85 mm Table 50 TOBY R2 series module suggest footprint dimensions The Non Solder resist Mask Defined NSMD pad type is recommended over the Solder resist Mask Defined SMD pa...

Страница 119: ...specific mechanical deployments of the module e g application PCB with different dimensions and characteristics mechanical shells enclosure or forced air flow The increase of the thermal dissipation...

Страница 120: ...for device ESD immunity ESD testing standard CENELEC EN 61000 4 2 15 and the radio equipment standards ETSI EN 301 489 1 16 ETSI EN 301 489 52 17 which requirements are summarized in Table 51 The ESD...

Страница 121: ...cable only to equipment providing conductive enclosure surface Antenna ports 4 kV 4 kV Test applicable to u blox reference design because it provides antennas with conductive insulating surfaces The t...

Страница 122: ...Human Body Model according to JESD22 A114 Higher protection level could be required if SIM interface pins are externally accessible on the application board The following precautions are suggested to...

Страница 123: ...SD ESD ESD ESD 1k TP V_INT 21 GPIO1 3V8 Network Indicator 0 0 87 ANT2 75 ANT_DET 10k Connector 27pF ESD Secondary Cellular Antenna 33pF 82nH 82nH 81 Connector Primary Cellular Antenna 33pF ANT1 TP Mou...

Страница 124: ...connected to all the UART pins of the TOBY R2 series modules TXD RXD DTR DCD for diagnostic purpose in particular providing a 0 series jumper on each line to detach each UART pin of the module from t...

Страница 125: ...irement 90 differential and 30 common mode and should not be routed close to any RF line part Keep the SDIO traces short avoid stubs avoid coupling with any RF line part and consider low value series...

Страница 126: ...uring area The main principle of an EPA is that there are no highly charging materials near ESD sensitive electronics all conductive materials are grounded workers are grounded and charge build up on...

Страница 127: ...ntrol of the temperature and all parts will be heated up evenly regardless of material properties thickness of components and surface color Consider the IPC 7530A Guidelines for temperature profiling...

Страница 128: ...ering Profile 50 50 Elapsed time s Figure 69 Recommended soldering profile The modules must not be soldered with a damp heat process 3 3 3 Optical inspection After soldering the TOBY R2 series modules...

Страница 129: ...already populated on it Performing a wave soldering process on the module can result in severe damage to the device u blox gives no warranty against damages to the TOBY R2 series modules caused by per...

Страница 130: ...fficient to provide optimum immunity to interferences and noise u blox gives no warranty for damages to the cellular modules caused by soldering metal cables or any other forms of metal strips directl...

Страница 131: ...cific application device to be deployed in the market The required certification scheme approvals and relative testing specifications differ depending on the country or the region where the device tha...

Страница 132: ...s are employed 4 2 2 Declaration of Conformity This device complies with Part 15 of the FCC rules Operation is subject to the following two conditions this device may not cause harmful interference th...

Страница 133: ...ations not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment Additional Note as per 47CFR15 105 this equipment has been tested and fou...

Страница 134: ...ystem antenna s used for the TOBY R2 series modules i e the combined transmission line connector cable losses and radiating element gain must not exceed the value stated in the IC Grant for mobile and...

Страница 135: ...T Manufacturers of portable applications incorporating the TOBY R2 series modules are required to have their final product certified and apply for their own Industry Canada Certificate related to the...

Страница 136: ...uipement 4 4 European Conformance CE mark The TOBY R200 modules have been evaluated against the essential requirements of the Radio Equipment Directive 2014 53 EU In order to satisfy the essential req...

Страница 137: ...automatic test equipment ATE in a production line The following typical tests are among the production tests Digital self test firmware download Flash firmware verification IMEI programming Measureme...

Страница 138: ...A Go No go test is typically to compare the signal quality with a Golden Device in a location with excellent network coverage and known signal quality This test should be performed after data connecti...

Страница 139: ...tries The use of this feature is intended for testing purpose in controlled environments by qualified user and must not be used during the normal module operation Follow instructions suggested in u bl...

Страница 140: ...SIM_RST GPIO5 GPIO6 SDIO_D2 SDIO_CLK RSVD RSVD I2S_WA I2S_CLK I2S_RXD SDIO_D1 VCC GND SCL SIM_CLK VSIM HOST_SELECT1 RSVD I2S_TXD SDIO_D3 RI DSR RSVD V_INT VUSB_DET GND RSVD GPIO1 RSVD RSVD TXD CTS DTR...

Страница 141: ...al audio GPIOs 1 8 V Network indication Clock output Wi Fi control TOBY L200 4 2 4 5 7 17 24 6 1 2 4 5 8 12 Quad TOBY L201 4 2 4 5 13 17 24 6 2 5 TOBY L210 4 1 3 5 7 8 20 24 6 1 2 5 8 12 Quad TOBY L22...

Страница 142: ...1800 1900 1900 1800 I I VIII VIII V 960 2170 12 12 TOBY L220 800 850 900 950 1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200 824 750 2500 2550 2600 2650 2700 1710 960 2170 700 V I I VIII VIII...

Страница 143: ...SB Data I O D 28 USB_D USB Data I O D USB_D USB Data I O D 29 RSVD Reserved RSVD Reserved 30 GND Ground GND Ground 31 RSVD Reserved RSVD Reserved 32 GND Ground GND Ground 33 43 RSVD Reserved RSVD Rese...

Страница 144: ...na Detection Input25 ANT_DET Antenna Detection Input 76 GND Ground GND Ground 77 RSVD Reserved RSVD Reserved 78 80 GND Ground GND Ground 81 ANT1 RF Antenna Input Output ANT1 RF Antenna Input Output Su...

Страница 145: ...orting LTE Band 7 LEGEND TOBY L2xx 00 TOBY L2xx 01 TOBY L2xx 60 Mount for TOBY L2xx xx TOBY R2xx xx Mount for TOBY L2xx 01 TOBY L2xx x2 TOBY L2xx 60 TOBY R2xx xx Mount for Mount for TOBY R2xx xx Mount...

Страница 146: ...ontinuous Reception DSP Digital Signal Processing DTE Data Terminal Equipment ECM Ethernet networking Control Model EDGE Enhanced Data rates for GSM Evolution EMC Electro Magnetic Compatibility EMI El...

Страница 147: ...odulation PCN IN Product Change Notification Information Note PCS Personal Communications Service PFM Pulse Frequency Modulation PMU Power Management Unit PWM Pulse Width Modulation QPSK Quadrature Ph...

Страница 148: ...ecommunications System USB Universal Serial Bus VCO Voltage Controlled Oscillator VoLTE Voice over LTE VSWR Voltage Standing Wave Ratio Wi Fi Wireless Local Area Network IEEE 802 11 short range radio...

Страница 149: ...301 489 1 Electromagnetic compatibility and Radio spectrum Matters ERM EMC standard for radio equipment and services part 1 common technical requirements 17 ETSI EN 301 489 52 Electromagnetic Compati...

Страница 150: ...TOBY R200 and TOBY R202 Updated Power on and Power off sections R05 09 Feb 2017 sses Added maximum antenna gain for TOBY R200 R06 02 Mar 2017 sses Updated GPRS EDGE multi slot class R07 03 Aug 2017 ss...

Страница 151: ...Regional Office China Beijing Phone 86 10 68 133 545 E mail info_cn u blox com Support support_cn u blox com Regional Office China Chongqing Phone 86 23 6815 1588 E mail info_cn u blox com Support su...

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