Technical Information Motorola G24-L and G24-LC Developer’s Guide Module Hardware Description NOVEMBER 15, 2008 6802984C05-D
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE Notice While reasonable efforts have been made to assure the accuracy of this document, Motorola, Inc. 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. However, no responsibility is assumed for inaccuracies or omissions. Motorola, Inc.
Usage and Disclosure Restrictions License Agreements The software described in this document is the property of Motorola, Inc. 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. Copyrighted Materials Software and documentation are copyrighted materials. Making unauthorized copies is prohibited by law.
Table of Contents Manual Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix Target Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix Manual Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix Applicable Documents . . . . . . . . . . . .
Table of Contents Turning the G24-L Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Turning the G24-L Off Using ON_N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Turning the G24-L Off Using IGN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Turning the G24-L Off Using AT+MRST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Battery Charging Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Under Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Pre-Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Charging (Continuos Current) . . . . . . . . . . . . . . . . . . . . .
List of Figures 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-17 2-18 2-19 2-20 2-21 2-22 2-23 2-24 2-25 2-26 2-27 G24-L Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Transmission Power Drops. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 ON_N Power On Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Tables 1-1 Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 2-12 2-13 2-14 2-15 2-16 2-17 2-18 2-19 2-20 2-21 2-22 2-23 2-24 2-25 3-1 3-2 3-3 G24-L Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Power Supply Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface Note: All references to G24-L also apply to G24-LC, except where otherwise noted. Manual Scope This manual provides the electrical, mechanical and environmental requirements for properly integrating the G24-L module in a host application. This manual gives a complete set of hardware features and functions that may be provided by G24-L.
Applicable Documents Applicable Documents • G24-L Developer's Kit - 6802984C10 • G24-L AT Commands - 6802983C95 Regulatory Requirements The G24-L module is compliant with applicable FCC, IC and European R&TTE requirements. The integrated system incorporating the G24-L module may be subject to further regulations and standards. Motorola strongly recommends that the system integrator seeks professional advice regarding the regulations and standards that apply to their product.
Preface • Systems using the G24-L are subject to mandatory EMC testing under directive 2004/108/EC (see item 3 above).
Standards Standards Electromagnetic Compatibility: Principles and Applications by David A Weston, published by Marcel Dekker, Inc., 270 Madison Avenue, New York, NY 10016 USA. GSM 07.07 - prETS 300 916, Digital cellular telecommunication system (Phase 2+); AT command set for GSM Mobile Equipment (ME), Version 5.2.0 or higher, Reference RE/SMG-040707QR1. GSM 07.
Preface Text Conventions The following special paragraphs are used in this guide to point out information that must be read. This information may be set-off from the surrounding text, but is always preceded by a bold title in capital letters: Note Note: Presents additional, helpful, noncritical information that you can use. Warning Warning: Presents information to warn you of a potentially hazardous situation in which there is a possibility of personal injury.
Field Service Field Service For Field Service requests, use this email address: n2csfs01@motorola.com General Safety Remember!. . . safety depends on you! The following general safety precautions must be observed during all phases of operation, service, and repair of the equipment described in this manual. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the equipment. Motorola, Inc.
Preface Do not substitute parts or modify equipment Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification of equipment. Contact Motorola Warranty and Repair for service and repair to ensure that safety features are maintained. Batteries Batteries can cause property damage and/or bodily injury such as burns if a conductive material such as jewelry, keys, or beaded chains touch exposed terminals.
Caring for the Environment Caring for the Environment The following information is provided to enable regulatory compliance with the European Union (EU) Directive 2002/96/EC Waste Electrical and Electronic Equipment (WEEE) when using Motorola equipment in EU countries. The finished host application should be marked with the crossed out "wheelie bin" mark at least 7mm high if it is within the scope of the WEEE directive.
Preface CMM Compliance The disclosure table and symbols below are provided in accordance with Section 5 & 6 of the People's Republic of China's "Electronic Industry Marking Standard for Control of Pollution Caused by Electronic Information Products". The disclosure table and symbols shown below cover the electronic information product (EIP) supplied.
Warranty Notification MOTOROLA has been informed of such potential loss or damage. And in no event shall MOTOROLA's liability to CUSTOMER for damages of any nature exceed the total purchase price CUSTOMER paid for the Product at issue in the dispute, except direct damages resulting from patent and/or copyright infringement, which shall be governed by the "INDEMNITY" Section of this Agreement.
Preface customer service department of your service provider or Motorola's service centers, listed in Chapter 5. Claiming In order to claim the warranty service you must return the OEM module and/or accessories in question to Motorola's Authorized Repair or Service Center in the original configuration and packaging as supplied by Motorola. Please avoid leaving any supplementary items like SIM cards.
What is Not Covered by the Warranty What is Not Covered by the Warranty This warranty is not valid if the defects are due to damage, misuse, tampering, neglect or lack of care and in case of alterations or repair carried out by unauthorized persons. The following are examples of defects or damage not covered by this product warranty 1. Defects or damage resulting from use of the Product in other than its normal and customary manner. 2.
Preface Revision History Manual Number 6802984C05-D Manual Title G24-L Module Hardware Description Version Information The following table lists the manual version, date of version, and remarks about the version. Revision History Version Date Issue A September 25, 2007 B January 15, 2008 Remarks Initial Release New sub-paragraph “Power Supply A/D” , under “A/D Interface” . Updated values in the following tables: 2-4, 2-6, 2-7, 2-8, 2-9 and 2-25.
Revision History xxii G24-L Module Hardware Description November 15, 2008
Chapter 1: Introduction The G24-L is the newest member of Motorola's embedded cellular modules family. Designed with quad band GSM capabilities, which supports all four GSM bands 850/900/1800/1900 MHz, and with GPRS multislot class 10, G24-L can operate on any GSM/GPRS network to provide voice and data communications. The G24-L is similar to a condensed cellular phone core, which can be integrated into any system or product that needs to transfer voice or data information over a cellular network.
Product Specifications Product Specifications Important: For safety regulations and requirements, see “Regulatory Requirements” on page x, “Safety Statement and Requirements” on page x and “Antenna and Transmission Safety Precautions” on page xi in “Preface” . Note: Motorola reserves the right to change the specifications without prior notice. Table 1-1: Product Specifications Product Features Operating systems: GSM 850/GSM 900 DCS 1800/PCS 1900 Physical Characteristics 2 Dimensions: 45.2 x 24.
Table 1-1: Product Specifications (Cont.) Environmental Operational temperature: -20°C to +75°C Storage temperature: -40°C to +85°C Performance Operating voltage: 3.3 - 4.2 V Current consumption: 2.5 mA @ DRX9 (Sleep mode) Maximum Tx output power: GSM 850/GSM 900: Power class 4 (33 + 2 dBm) DCS 1800/PCS 1900: Power class 1 (30 + 2 dBm) Interfaces Connectors: Single 70-pin, board-to-board RF MMCX SIM Card: External SIM connectivity 3.0 V/1.
Product Specifications Table 1-1: Product Specifications (Cont.) GSM Supplementary Service USSD Phase II Call forwarding Call hold, waiting and multiparty Call diverting Missed-call indicator AOC Call barring Character Set UTF8 UCS2 ASCII GSM 8859-1 Control/Status Indicators GSM/GPRS coverage Wakeup TX enable Reset Antenna Detect AT Command Set GSM 07.05 GSM 07.
Regulatory Approvals The G24-L module has been tested and approved under the standards and regulations listed below: • FCC - part 15, 22, 24 • • • • R&TTE - LVD 2006/95/EC, standards: EN301 489-1 & 7, EN60950 GCF 3.27.1 NAPRD 3.14.
Regulatory Approvals CFR 47 Part 15.21 Information to user The user's manual or instruction manual for an intentional or unintentional radiator shall caution the user that changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
Chapter 2: Hardware Interface Description The following paragraphs describe in details the hardware requirements for properly interfacing and operating the G24-L module. Architecture Overview Figure 2-1 below illustrates the primary functional components of the G24-L.
Architecture Overview The G24-L consists of the following blocks: Digital Block • Micro-controller Unit (MCU) for system and user code execution. • Digital Signal Processor (DSP) for voice and data processing. • Serial communications interfaces. • USB driver interface • UART • SIM card • Digital audio (PCM) bus interface. • General purpose IO signals. Analog Block • Power Management IC (PMIC). • Internal regulators • 1 external regulator for customer use • Analog audio interface management.
Chapter 2: Hardware Interface Description Operating Modes G24-L incorporates several operating modes. Each operating mode is different in the active features and interfaces. Table 2-1 summarizes the general characteristics of the G24-L operating modes and provides general guidelines for operation. Table 2-1: G24-L Operating Modes Mode Description Features Not Powered VCC supply is disconnected. The G24-L is Off. Any signals connected to the interface connector must be set low or tri-state.
Power Supply Power Supply The G24-L power supply must be a single external DC voltage source of 3.3V to 4.2V. The power supply must be able to sustain the voltage level during a GSM transmit burst current surge, which may reach 2.0A. The G24-L interface connector has 8 contacts for the main power supply, as described in Table 2-2. All these contacts must be used for proper operation. Table 2-2: Power Supply Signals Pin # Signal Name 1-4 GND 5-8 VCC Description Main ground connection for G24-L module.
Chapter 2: Hardware Interface Description It is recommended that the voltage drops during a transmit burst will not exceed 300mV, measured on the G24-L interface connector. In any case, the G24-L supply input must not drop below the minimum operating level during a transmit burst. Dropping below the minimum operating voltage may degrade the module performance.
Power Supply Table 2-4: G24-L Current Ratings (Cont.
Chapter 2: Hardware Interface Description Power On/Off Operation The G24-L power on and off process includes two primary phases, which are indicated at the interface connector by the hardware output signals RESET_N and CTS_N. The RESET_N signal indicates whether G24-L is powered on or off. When this signal is enabled (low), G24-L is powered-off. When it is disabled (high), G24-L is powered-on. The CTS_N signal indicates the serial communications interface (UART) status.
Power On/Off Operation Figure 2-3 illustrates the power-on process using the ON_N signal. Figure 2-3: ON_N Power On Timing Turning the G24-L On Using IGN To turn on G24-L, the IGN signal must be asserted high. The IGN signal must remain high for the duration of the G24-L operation. G24-L powers down when the IGN signal is returned to its low state. Figure 2-4 illustrates the power-on process using the IGN signal.
Chapter 2: Hardware Interface Description Turning the G24-L Off There are several ways to turn the G24-L off: • Asserting the ON_N signal low for a minimum of 2 seconds. • Setting the IGN signal low. • AT command. Turning the G24-L Off Using ON_N Asserting the ON_N signal low for a minimum of 2 seconds will turn G24-L off. This will initiate a normal power-off process, which includes disabling of all applications interfaces (UART, SIM card, audio, etc.) and closing the network connection.
Power On/Off Operation Figure 2-6 illustrates the power-off timings when using the IGN signal. Figure 2-6: IGN Power Off Timing Turning the G24-L Off Using AT+MRST The AT+MRST command initiates a G24-L system reset operation, which powers off the G24-L. This command emulates the ON_N signal operation for power off. Power Loss shut down A low power shut down occurs when G24-L senses the external power supply is below the minimal operating limit.
Chapter 2: Hardware Interface Description Low Power Mode The G24-L incorporates an optional low power mode, called Sleep Mode, in which it operates in minimum functionality, and therefore draws significantly less current. During low power mode the G24-L network connection is not lost. G24-L continues to monitor the GSM network constantly for any incoming calls or data.
Low Power Mode Important: G24-L will not enter low power mode when USB is operating. Connecting USB to the G24-L will disable the low power mode operation. Serial Interface During Low Power Mode During low power mode the G24-L serial interfaces are disabled. This is indicated by the CTS signal high state. The G24-L wakes up periodically from low power mode to page the GSM network for any incoming calls or data. After this short paging is completed, G24-L returns to low power mode.
Chapter 2: Hardware Interface Description Temporary Termination of Low Power Mode Temporary termination of low power mode occurs when G24-L switches from Sleep mode to Idle mode for a defined period, and then returns automatically to Sleep mode. Low power mode may be terminated temporarily by several sources, some of which are user initiated and others are initiated by the system. Using the WKUPI_N signal The WKUPI_N signal is an active low input, that is set high by default.
Low Power Mode Data on the Serial interface While G24-L is temporarily awake in Idle mode, data may be transmitted on the serial interface. In case data is being transmitted in any direction, G24-L will not return to low power mode. This is regardless of the original wake-up reason or source. G24-L will remain awake while data is transferred.
Chapter 2: Hardware Interface Description Real Time Clock G24-L incorporates a Real Time Clock (RTC) mechanism that performs many internal functions, one of which is keeping time. The RTC subsystem is embedded in the PMIC and operates in all of the G24-L operating modes (Off, Idle, Sleep), as long as power is supplied above the minimum operating level. The G24-L time and date can be set using the following methods: • Automatically retrieved from the GSM network.
Serial Interfaces Serial Interfaces G24-L includes two completely independent serial communications interfaces, which may be used by the application for several purposes. UART The G24-L UART is a standard 8-signal bus. The UART is used for all the communications with G24-L - AT commands interface, GPRS data and CSD data, programming and software upgrades. The UART signals are active low CMOS level signals. For standard RS232 communications with a PC, an external transceiver is required.
Chapter 2: Hardware Interface Description USB Interface G24-L incorporates a standard Universal Serial Bus (USB) interface. The G24-L USB electrical interface and protocol conform to the USB 1.1 full-speed specifications. G24-L is defined as a USB device on the USB bus and does not support hub or host functionality. USB may be used for standard communications with G24-L, as done through the UART interface. Important: When USB is active, G24's low power mode cannot be operated.
SIM Interface SIM Connection Figure 2-13 illustrates a typical SIM interface connection to G24-L. This connection type is implemented on the G24-L Developer Board, using an FCI SIM tray, PN 7111S1615A05. Figure 2-13: G24-L SIM Interface Table 2-5 details the SIM interface signals. Table 2-5: SIM Interface Signals Pin # Signal Name Description 48 SIM_VCC 2.85V/1.80V Supply to the SIM 44 SIM_RST_N Active low SIM reset signal 52 SIM_DIO Serial input and output data 46 SIM_CLK Serial 3.
Chapter 2: Hardware Interface Description • A 100Ω series resistor must be placed on the SIM_CLK signal line. • • • • • • • November 15, 2008 The resistor value may slightly change depending on the application design. It is recommended to design component placeholders (unpopulated) for capacitors on the SIM_RST and SIM_DIO signal lines. The SIM card tray should be located, and its signals should be routed, away from any possible EMI sources, such as the RF and digital switching signals.
Audio Interface Audio Interface The G24-L audio interface supports several audio devices and operating modes. The audio interface's operating modes, active devices, amplification levels and speech processing algorithms are fully controlled by the host application, through advanced programming options and a versatile AT commands set. The G24-L supports the following audio devices: • Two single-ended and biased mono analog microphone inputs for use in a variety of modes.
Chapter 2: Hardware Interface Description Figure 2-15 shows the microphone circuit and Table 2-6 gives the microphone specifications. Figure 2-15: Handset Microphone Circuit Important: The microphone circuit design depends on the type of microphone device. A series capacitor is required in case a passive microphone is used, or the application provides a separate bias voltage to an active microphone circuit.
Audio Interface Figure 2-16 shows the microphone circuit and Table 2-7 gives the microphone specifications. Figure 2-16: Headset Microphone Circuit Important: The headset microphone circuit design depends on the type of microphone device. A series capacitor is required in case a passive microphone is used, or the application provides a separate bias voltage to an active microphone circuit.
Chapter 2: Hardware Interface Description Figure 2-17 shows a differential speaker circuit, Figure 2-18 shows a single-ended speaker circuit and Table 2-8 gives the speaker specifications. Figure 2-17: Differential Speaker Circuit Important: For safety regulations it is important to place series resistors on the speaker output lines, as illustrated in Figure 2-17.
Audio Interface Important: When implementing a single ended speaker design, it is required to place a series capacitor and resistor on the speaker output line, as illustrated in Figure 2-18. The capacitor should be of low tolerance with values of C = 10-22 uF.
Chapter 2: Hardware Interface Description Alert Loudspeaker Port The alert loudspeaker is the default G24-L power-up ringer. It is used for, but not limited to, sounding the G24-L alerts, melodies, and rings. It is located at pins 63 and 65 on the G24-L interface connector, named ALRT_N and ALRT_P respectively. It is designed with an internal amplifier supplied directly from VCC, which supplies 0.5W to the audio device. It may also be used as a single-ended output referenced to the G24-L analog ground.
Audio Interface Important: When implementing a single ended loudspeaker design, it is required to place a series capacitor and resistor on the alert output line, as illustrated in Figure 2-20. The capacitor should be of low tolerance with values of C = 10-22 uF. The resistor value should be R = 0Ω at the design stage, but may be changed to a different value during audio safety testing, in case that alert level limitation is required.
Chapter 2: Hardware Interface Description Important: In digital audio mode the input and output gains cannot be controlled by AT commands. Figure 2-21 illustrates the PCM bus format of the voiceband audio configuration. Figure 2-21: Voiceband Mode PCM Bus Coding Format Operating Modes The G24-L audio interface includes 2 modes of operation. Each operating mode defines the audio input and output devices to be used for each audio sound type and their programmable settings.
Audio Interface Advanced Mode Advanced audio mode utilizes G24's unique set of AT commands for advanced audio programming. The expanded AT command set enables to define a specific audio path and setting, which are not part of the default configuration, for each type of audio sound (speech, DTMF tones, rings and alerts).
Chapter 2: Hardware Interface Description Figure 2-22 describes the audio programming interface options, which are defined by AT commands. Figure 2-22: Audio Programming Interface Audio Algorithms The G24-L audio interface features advanced speech processing algorithms for echo suppression, noise suppression and side-tone feedback Enabling or disabling the algorithms can be configured separately for each audio path and operating mode through the AT command interface.
Audio Interface Gain Control The amplification (gain) level for each input and output device can be configured through AT commands. Both basic and advanced audio modes provide AT commands to set the desired gain levels for each audio path and audio sound type. Table 2-13 gives the gain control features.
Chapter 2: Hardware Interface Description . Table 2-15: Microphone and Headset Microphone Port Gains AT Command Value 0dBm0 Input Level (mVRMS) Maximum Input Level (mVRMS) 0 87 350 ... ... ... 3 63 250 ... ... ... 16 15 55 ... ... ... 31 4 11 Audio Design The audio quality delivered by G24-L is highly affected by the application audio design, particularly when using the analog audio interface. Therefore, special care must be taken when designing the G24-L audio interface.
Audio Interface Analog Ground The G24-L interface incorporates a dedicated analog ground contact, AGND pin 59, which is internally connected to the G24's ground. The AGND signal is intended to provide a separate ground connection for the application's external audio devices and circuits. This signal provides an isolated ground connection directly from G24-L, which is separated from the noisy digital ground of the application.
Chapter 2: Hardware Interface Description A/D Interface The G24-L includes 4 Analog to Digital Converter (ADC) signals with 8-bit resolution, for environmental and electrical measurements. The ADC signals measure an analog DC voltage level on their inputs which is converted to a 8-bit digital value for further processing by G24-L or the user application. The A/D signals operation and reporting mechanism is defined by the AT+MMAD command.
A/D Interface Important: In the G24-LC Charger Model configuration, the ADC3 signal is allocated to a battery temperature measurement sensor and is not intended for general use. Table 2-17 gives the GPAD specifications. Table 2-17: GPAD Specifications Parameter Conditions Maximum Input Voltage Operating range Measurement Voltage ADC range Min Max Unit -0.1 2.75 V 0 2.
Chapter 2: Hardware Interface Description This function is described in detail in “Battery Charger Interface” on page 47.
Controls and Indicators Interface Controls and Indicators Interface The G24-L incorporates several interface signals for controlling and monitoring the module's operation. The following paragraphs describes these signals and their operation. Table 2-20 gives a description of the controls and indicators signals. Table 2-20: Controls and Indicators Connector Pin Signal Name Description 25 RESET_N G24-L system reset output indicator. When high, G24-L is operating. 27 VREF 2.80V regulated output.
Chapter 2: Hardware Interface Description Important: The VREF regulator is powered from the G24's main power supply, and therefore any current sourced through this regulator originates from the G24-L VCC supply. The overall VCC current consumed by G24-L is directly affected by the VREF operation. The G24-L current consumption rises with respect to the current sourced through VREF. Figure 2-23 shows the VREF power-up timing. Figure 2-23: VREF Power-up Timing Table 2-21 gives the VREF specifications.
Controls and Indicators Interface this signal as an indication to switch from low power mode to normal operation, and activate the serial interface. The wakeup-out mechanism, using the WKUPO_N signal, is controlled by 2 AT commands (see Figure 2-24): • ATS102 - Defines the delay time in milliseconds that G24-L will wait, after asserting the WKUPO_N signal low, before sending data on the serial interface.
Chapter 2: Hardware Interface Description Antenna Detection The G24-L incorporates an internal antenna detection circuit, which senses the physical connection and removal of an antenna or antenna circuit on the G24-L antenna connector. The antenna detection state is reported to the application through the ANT_DET output signal, and may also be queried by the ATS97 command. The detection circuit senses DC resistance to ground on the G24-L antenna connector.
Antenna Interface Antenna Interface The G24-L antenna connector is the RF interface to the GSM network. The antenna interface is terminated by an MMCX connector type, which is 50Ω impedance matched at the relevant GSM frequencies. The antenna or antenna application must be installed properly to achieve best performance. Table 2-22 gives the antenna interface specifications.
Chapter 2: Hardware Interface Description Battery Charger Interface General G24-LC incorporates a charging circuit to support battery operated applications. The battery charger interface includes all the necessary circuitry and signals to facilitate operation and charging of a single cell 3.7V Lithium-Ion battery pack, including safety and temperature controls. The battery charger interface is designed for a direct and seamless connection to the battery pack and external charger.
Battery Charger Interface The battery and charger interface signals are described in the table below: Table 2-23: Battery and Charger Interface Signals Pin # Signal Name Description 1-4 GND Module Ground Connect to battery BATT(-) contact. 5-8 VCC Module Supply Connect to battery BATT(+) contact. 10 VBUS 51 IGN External charger input VBUS and IGN signals are connected internally in the G24-LC. 47 ADC3 Battery temperature measurement. Connect to thermistor at battery THERM contact.
Chapter 2: Hardware Interface Description The following table describes the battery charger specifications. Table 2-24: Charger Supply Specifications Parameter Conditions Supply Voltage Supply Current Maximum Pre-Charge Operating Temperature Battery Thermistor Min Typ Max Unit 4.5 5.0 5.25 V 500 150 mA 45 °C 0 Battery Charging Process The battery charging process is managed automatically by the G24-LC, as described below.
Battery Charger Interface Monitoring (Full) When the battery is fully charged and reaches above 4.20V, the charging process is stopped. The battery charging circuit is deactivates the charging path and current from the external charger is not required. At this stage the battery voltage is monitored continuously by the G24-LC as it discharges.
Chapter 2: Hardware Interface Description Protection and Safety The G24-LC battery Charger Interface is designed and tested according to the EN60950 safety regulation together with the recommended accessories, which are described in the table below. Table 2-25: Recommended Accessories for G24-LC Accessory Description Manufacturer Part Number Battery 3.
Battery Charger Interface 52 G24-L Module Hardware Description November 15, 2008
Chapter 3: Electrical and Environmental Specifications Absolute Maximum Ratings Table 3-1 gives the maximum electrical characteristics of the G24-L interface signals. Caution: Exceeding the values may result in permanent damage to the module. Table 3-1: Maximum Ratings Parameter Conditions VCC Supply November 15, 2008 Min Max Unit 0 4.5 V Digital Input Signals (Except for IGN, VBUS, USB_DP, USB_DN) G24-L powered on 0 3 V Analog Input Signals (Audio, A/D interfaces) G24-L powered on 0 2.
Environmental Specifications Environmental Specifications Table 3-2 gives the environmental operating conditions of the G24-L module. Caution: Exceeding the values may result in permanent damage to the module.
Chapter 3: Electrical and Environmental Specifications Table 3-3: Interface Specifications Level Signal Name Pin # Active Internal H/L PU/PD Parameter Conditions Description I/O Min Typ Max Units 3.3 3.6 4.2 V 2 A 65 µA 2.8 +1% V 2.8 3.0 V 0 0.4 Power: 1 2 GND Ground 3 4 VIN 5 6 VCC 7 DC power supply I IMAX VCC = 3.
Application Interface Specifications Table 3-3: Interface Specifications (Cont.) Level Pin # Signal Name Active Internal H/L PU/PD Parameter Conditions Description I/O Min Typ Max Units 2.0 2.8 3.0 0 0.
Chapter 3: Electrical and Environmental Specifications Table 3-3: Interface Specifications (Cont.) Level Pin # Signal Name Active Internal H/L PU/PD Parameter Conditions Description I/O Min Typ Max Units 2.0 2.8 3.0 0 0.3 Digital Audio: 18 PCM_ DIN Digital audio receive I H 20 PCM_ DOUT Digital audio transmit O H VIL 22 PCM_CLK Digital audio clock O H VOH 24 PCM_FS Digital audio frame sync.
Application Interface Specifications Table 3-3: Interface Specifications (Cont.) Level Pin # Signal Name Active Internal H/L PU/PD Parameter Conditions Description I/O Min Typ Max Units 2.4 2.8 3.0 0 0.15 GPIO: 28 GPIO1 General purpose I/O I/O 22K PU 30 GPIO2 General purpose I/O I/O 22K PU 32 GPIO3 General purpose I/O I/O 22K PU 34 GPIO4 General purpose I/O I/O 22K PU 36 GPIO5 General purpose I/O I/O 22K PU 38 GPIO6 General purpose I/O I/O 22K PU VIH VIL V 2.
Chapter 3: Electrical and Environmental Specifications Table 3-3: Interface Specifications (Cont.) Level Pin # Signal Name Active Internal H/L PU/PD Parameter Conditions Description I/O Min Typ Max Units A/D: 37 ADC1 General purpose A/D I VIN Maximum Input Level 0 2.75 V 43 ADC2 General purpose A/D I VIN-ACTIVE Active sampling range 0 2.
Application Interface Specifications 60 G24-L Module Hardware Description November 15, 2008
Chapter 4: Mechanical Specifications Board Dimensions Figure 4-1 describes the G24-L mechanical characteristics.
Interface Connector Specifications Interface Connector Specifications The G24-L uses a single 70-pin, 0.5 mm pitch, board to board connector for the application interface, which is available in 2 stacking height versions, as described in Table 4-1. Table 4-1: G24-L interface connector options G24-L Connector Mating Connector Molex 53748-0708 Molex 52991-0708 Stacking Height 3.0 mm Figure 4-2 shows the G24-L interface connector.
Chapter 4: Mechanical Specifications Mating Connector The mating connector incorporate the same electrical and mechanical characteristics as the corresponding G24-L interface connector, which is described in Table 4-2. Figure 4-3 provides a reference drawing of the mating connector mechanical dimensions. Figure 4-3: Mating Connector Dimensions For more information on the G24-L mating connector, please refer to the Molex web site at http://www.molex.com.
RF Connector Specifications RF Connector Specifications The G24-L uses a standard MMCX receptacle connector for the radio interface. The connector is manufactured by Amphenol, PN MMCX6251S5. Figure 4-4 shows the MMCX connector dimensions. Figure 4-4: MMCX Connector Dimensions Table 4-3 describes the G24-L RF connector characteristics. Table 4-3: RF Connector Specifications Parameter Specifications Rated Voltage 335 VRMS Impedance 50 Ω Contact Resistance 5 mΩ center contact 2.
Chapter 4: Mechanical Specifications Such a cable assembly example is the Huber-Suhner PN 11_MMCX-50-1-2/111_OH, which is illustrated in Figure 4-5.
G24-L Mounting G24-L Mounting The G24-L incorporates 2 mechanical holes for installing the module onto the application board. The holes are 2.4 millimeters in diameter, which accommodates several types of mechanical elements. Several mechanical approaches may be applied to mount and fasten G24-L to the application board. Using M2 screws with suitable washers to mount the module onto spacers, a bracket or chassis is a recommended design.
Chapter 5: Service and Testing Service This section provides contact information for any possible queries that may arise, for example: • Have questions? • • • • • Having trouble getting the Developer Board set up? Technical questions? Configuration questions/problems? Technical operating problems? Need documentation? Who to Contact? The GSM/CDMA Data Module Customer Support Center is ready to assist you on integration issues. Direct Customer.
Service • • • • Software version of the unit (ATI8 command) or model number PCB version (located on the PCB near the RF connector) Severity of the problem Problem description, including: – Operator name – Type of SIM card (for example, Test, Pre-paid, or 5v/3v/1.
Chapter 5: Service and Testing Service Centers Motorola Electronics Taiwan PCS 11F, No, 296, Sec. 4, Jen-Ai Road Taipei, 106, Taiwan, R.O.C Motorola GmbH Am Sophienhof 10 D-24941 Flensburg Germany Motorola Communications ISRAEL Ltd. Service Operation Attention: Shukrun Ofer 3 Krementski Street Tel Aviv, Israel 67899 Telephone: (972) 3 5658829 JNB Electronics Pty Ltd.
Testing a Standalone Unit Testing a Standalone Unit This section describes how to perform a G24-L functionality test, whose purpose is to: • Introduce the user to the G24-L • Explain how to work with the G24-L unit • Describe how to evaluate basic G24-L features The test setup provides a wide platform through which a G24-L unit can be evaluated. The specific test procedure described below covers only a few of the G24-L’s many features.
Chapter 5: Service and Testing 6.
Testing a Standalone Unit Test Procedure To Perform the G24-L Test Follow the procedure below to perform the G24-L test: 1. Verify that the line modem is functioning and communicating with the computer by entering the AT command at in the modem’s terminal window This common AT command prompts a properly working modem to reply OK. 2.
Acronyms and Abbreviations Abbreviation Full Name A A AMR Adaptive Multi Rate A AOC Advice of Charge B BR Baud Rate B bps Bits Per Second C CSD Circuit Switched Data C CTS Clear to Send D DCD Data Carrier Detect D DCE Data Communication Equipment (such as modems) D DCS Digital Cellular System (GSM in the 1800MHz band) D DOC Department of Communications (Canada) D DRX Discontinuos Reception D DSP Digital Signal Processor D DSR Data Set Ready D DTE Data Terminal Equipment (such as
Abbreviation Full Name E EMC Electromagnetic Compatibility E EOTD Enhanced Observed Time Difference E EPOS Electronic Point of Sale E ERP Effective Radiated Power E ESD Electrostatic Discharge E ETSI European Telecommunication Standards Institute F FCC Federal Communications Commission (U.S.
Acronyms and Abbreviations Abbreviation Full Name P PDU Packet Data Unit P PLL Phase-locked Loop P PTCRB PCS-1900 Type Certification Review Board (GSM North America) P PU Pull Up R R&TTE Radio and Telecommunications Terminal Equipment R RMS Root Mean Square R RI Ring Indicator R RTS Request To Send S SAR Specific Absorption Rate S SIM Subscriber Identity Module S SMS Short Message Service S SPI Serial Peripheral Interface T TDMA Time Division Multiple Access R S T November 15
Abbreviation Full Name U U UART Universal Asynchronous Receiver Transmitter U USB Universal Serial Bus U USSD Unstructured Supplementary Services Data V VCC Voltage Common Collector V VSWR Voltage Standing Wave Ratio V Acr & Abbr-4 G24-L Module Hrdware Description November 15, 2008
Index A Antenna Installation, xi Approvals Regulatory, 5 B Block Diagram Description, 7 E Environmental Specifications, 3 G G24-L Abbreviations, 2 Antenna Installation, xi Block Diagram Description, 7 Product Specifications, 2 Regulatory Approvals, 5 Safety Precautions, xi Standards, xii Terms and Abbreviations, 2 Testing, 70 User Operation, xi P Physical Specifications, 2 Precautions, xi Product Specifications, 3 R Regulatory Approvals, 5 S Safety Precautions, xi Specifications, 2 Environmental, 3 Ph
Index Index-2 U-U G24-L Module Hardware Description November 15, 2008
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