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Summary of Contents for Telit Wireless Solutions CE910-DUAL
- Page 3 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE Notice While reasonable efforts have been made to assure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from use of the information obtained herein. The information in this document has been carefully checked and is believed to be entirely reliable.
- Page 4 Usage and Disclosure Restrictions License Agreements The software described in this document is the property of Telit and its licensors. It is furnished by express license agreement only and may be used only in accordance with the terms of such an agreement.
- Page 5 Contents...
- Page 8 ÓÉ Foxit PDF Editor ±à¼- °æȨËùÓÐ (c) by Foxit Software Company, 2004 ½öÓÃÓÚÆÀ¹À¡£ The aim of this document is the description of typical hardware solutions useful for developing a product with the Telit CE910 module. This document is intended for Telit customers who are about to implement their applications using our CE910 modules.
- Page 9 This document contains the following chapters: Chapter 1: “Introduction” provides a scope for this document, target audience, contact and support information, and text conventions. Chapter 2: “General Product Description” gives an overview of the features of the product. Chapter 3: “CE910 Module Connections” deals with the pin out configuration and layout. Chapter 4: “Hardware Commands”...
- Page 10 Danger – This information MUST be followed or catastrophic equipment failure or bodily injury may occur. Caution or Warning – Alerts the user to important points about integrating the module. If these points are not followed, the module and end user equipment may fail or malfunction. Tip or Information –...
- Page 11 The aim of this document is the description of typical hardware solutions useful for developing a product with the Telit CE910 module. In this document all the basic functions of a mobile device will be taken into account; for each one of them a proper hardware solution will be suggested and eventually the wrong solutions and common errors to be avoided will be evidenced.
- Page 13 Signal Function Type USB FS 2.0 Communication Port USB_D+ USB differential Data(+) USB_D- USB differential Data(+) VUSB Power for the internal USB transceiver Asynchronous UART – Prog. / data +HW Flow Control C103/TXD Serial data input from DTE CMOS 1.8V C104/RXD Serial data output to DTE CMOS 1.8V...
- Page 21 To turn on the CE910, the pad ON_OFF* must be tied low for at least 1 second and then released. The maximum current that can be drained from the ON_OFF* pad is 0.1 mA. A simple circuit to power on the module is illustrated below: Upon turning on CE910 module, the CE910 module is not active yet because the boot sequence of CE910 is still executing internally.
- Page 25 The chart below describes the overall sequences for turning ON and OFF the module. The Unconditional shutdown of the module could be activated using the HW_SHUTDOWN* line(pad R13). WARNING: The hardware unconditional shutdown must NOT be used during normal operation of the device since it does not detach the device from the network.
- Page 30 The principal guidelines for the Power Supply Design embrace three different design steps: the electrical design the thermal design the PCB layout The electrical design of the power supply depends strongly on the power source where this power is drained.
- Page 31 An example of a linear regulator with 5V input: The desired output for the power supply is 3.8V, hence due to the big difference between the input source and the desired output, a linear regulator is not suitable and must not be used.
- Page 34 The PCB traces to CE910 and the Bypass capacitor must be wide enough to ensure no significant voltage drops occur when the 1A current peaks are absorbed. This is a must for the same above-mentioned reasons. Try to keep this trace as short as possible. ...
- Page 35 The antenna connection and board layout design are the most important parts in the full product design and they strongly reflect on the product’s overall performance. Read carefully and follow the requirements and the guidelines for a proper design. The antenna for a Telit CE910 device must fulfill the following requirements: CE910 Specifications Depending on the frequency band(s) provided by the network operator, the customer must use the most suitable...
- Page 37 The CE910 module includes a Universal Serial Bus (USB) transceiver, which operates at USB Full- speed (12Mbits/sec) and slave mode only. It is compliant with the USB 2.0 specification and can be used for diagnostic monitoring, control and data transfers. The table below describes the USB interface signals: Signal Function...
- Page 43 In order to interface the Telit CE910 with a PC com port or a RS232 (EIA/TIA-232) application, a level translator is required. This level translator must: Invert the electrical signal in both directions Change the level from 0/1.8V to +/-15V Actually, the RS232 UART 16450, 16550, 16650 &...
- Page 49 The CE910 module is provided by a set of Digital Input / Output pins Input pads can only be read; they report the digital value (high or low) present on the pad at the read time. Output pads can only be written or queried and set the value of the pad output. An alternate function pad is internally controlled by the CE910 firmware and acts depending on the function implemented.
- Page 51 The GPIO pads, when used as outputs, can drive 1.8V CMOS digital devices or compatible hardware. When set as outputs, the pads have a push-pull output and therefore the pull-up resistor may be omitted. The STAT_LED pin status shows information on the network service availability and Call status. In the CE910 modules, the STAT_LED usually needs an external transistor to drive an external LED.
- Page 53 The on board ADC is 12-bit converter. It is able to read a voltage level in the range of 0 ~ 1.2 volts applied on the ADC pin input and store and convert it into 12 bit word. Parameter Units Volt Input Voltage range AD conversion...
- Page 55 144 pins < Top View > In order to easily rework the CE910 it is suggested to consider having a 1.5 mm placement inhibit area around the module on the application. It is also suggested, as a common rule for an SMT component, to avoid having a mechanical part of the application in direct contact with the module.
- Page 59 The CE910 modules are packaged on trays of 20 pieces each. These trays can be used in SMT processes for pick & place handling.
- Page 62 One of the following options should be chosen in the design of host system in order to download or upgrade the Telit’s software and debug CE910 when CE910 is already mounted on a host system. CASE I: Users who use both of UART and USB interfaces to communicate with CE910 Must implement a download method in a host system for upgrading CE910 when it’s mounted.
- Page 64 The user must refer to below information to meet the FCC/IC's RF exposure rules and regulations when they design: Lors de la conception, l'utilisateur doit se référer à l'information ci-dessous pour remplir les conditions et règlementations FCC/IC' d’exposition aux ondes RF: •...
- Page 65 d'antenne non inclus dans cette liste, ayant un gain supérieur au gain maximum indiqué pour ce type, sont strictement interdits pour un usage avec ce dispositif. The following regulatory and safety notices must be published in documentation supplied to the end user of the product or system incorporating an adapter in compliance with local regulations.
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Page 66: Read Carefully
READ CAREFULLY Be sure the use of this product is allowed in the country and in the environment required. The use of this product may be dangerous and has to be avoided in the following areas: Where it can interfere with other electronic devices in environments such as hospitals, airports, aircrafts, etc.
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