- Technical Information Motorola W24 Developer’s Guide Module Hardware Description MAY 31, 2008 6802984C95-A 
- 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. 
- Trademarks MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners. © Copyright 2008 Motorola, Inc. 
- Table of Contents Manual Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Target Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Manual Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Applicable Documents . . . . . . . . . . . . 
- Table of Contents Power On/Off Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Turning the W24 On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Turning the W24 On Using ON_N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Turning the W24 On Using IGN . . . . . . . . . . . . . . . . . . . . . . . . . . 
- Table of Contents Required Query Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Who to Contact? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Required Query Information . . . . . . . . . . . . . . . 
- Table of Contents iv Module Hardware Description May 31, 2008 
- List of Figures 1-1 1-2 W24 Stand Alone Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 W24 + G24 Stacked Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 W24 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Transmission Power Drops. . . . . . . . . . . . 
- 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 3-1 3-2 3-3 3-4 W24 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Power Supply Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
- Preface Manual Scope This manual provides the electrical, mechanical and environmental requirements for properly integrating the W24 module in a host application. This manual gives a complete set of hardware features and functions that may be provided by W24. The availability of any feature or function, which is described in this manual, depends on the hardware revision and software version of a specific W24 model. The parameters and values provided in this manual are defined under typical conditions. 
- Regulatory Requirements Regulatory Requirements The Federal Communications Commission (FCC) requires application for certification of digital devices in accordance with CFR Title 47, Part 15 Sub Part C ,section 15.247 and Part 15 Sub Part B sections 15.107,15.109. This includes MPE calculation. As the W24 modem is not a standalone transceiver but is an integrated module, the W24 cannot be tested by itself for EME certification. 
- Preface This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. See 47 CFR Sec. 15.19(3). 
- Standards Important: The unit must be installed in a manner that provides a minimum separation distance of 8 inches (20 centimeters) or more between the antenna and persons and must not be co-located or operate in conjunction with any other antenna or transmitter in order to satisfy FCC RF exposure requirements for mobile transmitting devices. 
- Preface • • • • EN 60950 Safety RSS-210 Issue 7 (IC Cannada) EN 301 489-1 EN 301 489-17 Contact Us We at Motorola want to make this guide as helpful as possible. Keep us informed of your comments and suggestions for improvements. For general contact, technical support, report documentation errors and to order manuals, use this email address: M2M.CustomerCare@motorola.com Motorola appreciates feedback from the users of our information. 
- Field Service Field Service For Field Service requests, use this email address: M2M.CustomerCare@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 Dangerous procedure warnings Warnings, such as the example below, precede potentially dangerous procedures throughout this manual. Instructions contained in the warnings must be followed. You should also employ all other safety precautions that you deem necessary for the operation of the equipment in your operating environment. Warning example: Warning: Dangerous voltages, capable of causing death, are present in this equipment. Use extreme caution when handling, testing, and adjusting. 
- Limitation of Liability Limitation of Liability The Products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body; in other applications intended to support or sustain life; for the planning, construction, maintenance, operation or use of any nuclear facility; for the flight, navigation, communication of aircraft or ground support equipment; or in any other application in which the failure of the Product could create a situation where person 
- Preface Where you purchase the product other than as a consumer, Motorola disclaims all other warranties, terms and conditions express or implied, such as fitness for purpose and satisfactory quality. In no event shall Motorola be liable for damages nor loss of data in excess of the purchase price nor for any incidental special or consequential damages* arising out of the use or inability to use the Product, to the full extent such may be disclaimed by law. 
- What is Not Covered by the Warranty accessories, batteries, or boards are warranted for the balance of the original warranty time period. The Warranty Term will not be extended. All original accessories, batteries, parts, and OEM module equipment that have been replaced shall become the property of Motorola. Motorola does not warrant the installation, maintenance or service of the products, accessories, batteries or parts. 
- Preface Installed Data Please make and retain a note of all data you have inserted into your Product for example names, addresses, phone numbers, user and access codes, notes etc. before submitting your Product for a Warranty service as such data may be deleted or erased as part of the repair or service process. Please note if you have downloaded material onto your product, these may be deleted or erased as part of the repair process or testing process. Motorola shall not be responsible for such matters. 
- Revision History Revision History Manual Number 6802984C95-A Manual Title Module Hardware Description Version Information The following table lists the manual version, date of version, and remarks about the version. 
- Chapter 1: Introduction W24 is a self contained Wi-Fi module, supporting IEEE 802.11b/g systems in 2.4GHz band. W24 enables IP connectivity to any host device. It is ideal for enabling M2M applications to achieve secure, high speed throughput and access to IP networks via 802.11b/g wireless LANs or even via Cellular network when connected to G24 GSM/GPRS module family. 
- Product Specifications Figure 1-2 below illustrates the W24 & G24 stacked configuration. G24 W24 Host PCB Figure 1-2: W24 + G24 Stacked Configuration Product Specifications Important: For safety regulations and requirements, see “Regulatory Requirements” on page viii, “Regulatory Statement (Safety)” on page viii and “Antenna and Transmission Safety Precautions” on page ix in “Preface” . Note: Motorola reserves the right to change the specifications without prior notice. 
- Table 1-1: Product Specifications (Cont.) Environmental Operational temperature: -20°C to +60°C Storage temperature: -40°C to +85°C Performance Operating voltage: 3.3 - 4.2 V Current consumption: 250mA Maximum Tx peak output power: 25 dBm according to 47 CFR 15.247 (b) (3) & RSS-210 Section A8.4 Interfaces Connectors: 70-pin, board-to-board (host interface) 70-pin, board-to-board (G24 interface) not available on all models MMCX RF Connector Serial Ports: USB: USB full-speed device port, Rev. 2. 
- Regulatory Approvals Regulatory Approvals The W24 module has been tested and approved under the standards and regulations listed below: • FCC • • • • • CE (DOC) IC EMC Safety R&TTE Important: The following paragraphs must be addressed by the integrator to ensure their host is in compliance to the W24 FCC grant and/or the FCC grant of the host device and the G24 (where applicable). CFR 47 Part 15.19 specifies Label Requirements The following text may be on the product, user's manual, or container. 
- reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. 
- Regulatory Approvals 6 Module Hardware Description May 31, 2008 
- Chapter 2: Hardware Interface Description The following paragraphs describe in details the hardware requirements for properly interfacing and operating the W24 module. Architecture Overview Figure 2-1 below illustrates the primary functional components of the W24. Figure 2-1: W24 Block Diagram The W24 consists of the following blocks: Digital Block • • • • • May 31, 2008 Micro-controller Unit (MCU) for system and application code execution. 1MByte Flash. Serial communications interfaces. 
- Architecture Overview • • • • UART1. UART2 (when stacked with G24). General purpose IO signals. 12MHz crystal. Power Management Block • Power-up/down control circuit. • Power Management IC (PMIC). • 2 LDO regulators. RF Block • Wireless LAN Module which includes: • Power Amplifier • RF Transceiver • RF switch • Balun • MAC Processor • MAC EEPROM • 26 MHz crystal. • RF Antenna connector. 
- Chapter 2: Hardware Interface Description Operating Modes W24 incorporates several operating modes. Each operating mode is different in the active features and interfaces. Table 2-1 summarizes the general characteristics of the W24 operating modes and provides general guidelines for operation. Table 2-1: W24 Operating Modes Mode Description Features Not Powered VCC supply is disconnected. The W24 is Off. Any signals connected to the interface connector must be set low or tri-state. 
- Power Supply Power Supply The W24 power supply must be a single external DC voltage source of 3.3V to 4.2V. In order to support the stacked configuration, i.e. when G24 cellular module is coupled on the W24 module, the power supply must be able to sustain the required voltage level during a GSM transmit burst current surge, which may reach 2.0A. The W24 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. 
- Chapter 2: Hardware Interface Description Figure 2-2 illustrates the power supply behavior during GSM transmission (Stacked configuration). Figure 2-2: Transmission Power Drops Power Consumption Table 2-3 specifies typical W24 current consumption ratings in various operating modes. The current ratings refer to the overall W24 current consumption over the VCC supply. Table 2-3: W24 Current Ratings Parameter Description Conditions Min Typ Max Unit IOFF Powered off 3.3V 
- Power On/Off Operation Power On/Off Operation The W24 power on consists of two primary phases: Initial power up is hardware controlled by the Power-up/down circuit which monitors two power-up control signals: ON_N and IGN. If any of these two signals is asserted, the Power-up/down circuit will enable Voltage regulators and the power management IC. They will provide valid supply voltages to the processor which will start to boot. The second phase is SW controlled. 
- Chapter 2: Hardware Interface Description Turning the W24 On Using ON_N The ON_N input signal is set high by an internal pull-up resistor whenever a power supply is applied to W24. Therefore, it is recommended to operate this signal using an open collector/drain circuit connection. Asserting the ON_N signal low for a minimum of 500 milliseconds (0.5 seconds) and a maximum of 1.5 seconds will cause the W24 to turn-on. Asserting the ON_N signal low for more than 1. 
- Power On/Off Operation Figure 2-4 illustrates the power-on process using the IGN signal. Figure 2-4: IGN Power On Timing Turning the W24 Off There are several ways to turn the W24 off: • Asserting the ON_N signal low for a minimum of 2 seconds. • Setting the IGN signal low. • Turning the W24 Off using AT+iMRST. Note: If the unit was powered up by ON_N signal, W24 will ignore attempt to turn it off by setting the IGNITION to low. 
- Chapter 2: Hardware Interface Description Figure 2-5 illustrates the power-off timings when using the ON_N signal. Figure 2-5: ON_N Power Off Timing Note: If the unit was powered up by IGN, and it's being turned off by ON_N, the unit will enter "Off mode", and not power off. Turning the W24 Off Using IGN The IGN signal may be used to power off W24 if the unit was powered-up by the IGN signal. When the IGN signal is set low, W24 will turn off. 
- Power On/Off Operation Power Loss shut down A low power shut down occurs when W24 senses that the external power supply is below the minimal operating limit. The module will respond by powering down automatically without notice. This form of power-down is not recommended for regular use since the unexpected power loss may result in loss of data. Turning the W24 Off Using AT+iMRST The AT+iMRST command initiates a W24 system reset operation, which powers off the W24. 
- Chapter 2: Hardware Interface Description Low Power Mode The W24 supports optional low power modes, called Sleep Mode and Deep Sleep Mode, in which it operates with minimum functionality, and therefore draws significantly less current. During Sleep Mode the W24 network connection is not lost. W24 continues to monitor the network constantly for any incoming data. During low power mode, all of the W24 interface signals are inactive and are kept in their previous state, prior to activating low power mode. 
- Low Power Mode Serial Interface During Low Power Mode During low power mode the W24 serial interfaces are disabled. The W24 wakes up periodically from low power mode to monitor the network for data. After this short paging is completed, W24 returns to low power mode. During this short awake period, the serial interfaces are enabled and communications with the module is possible. Terminating Low Power Mode To bring W24 back from the sleep mode, WKUPI_N needs to be asserted (set low). 
- Chapter 2: Hardware Interface Description The WKUPI_N signal is the recommended method to temporarily wake-up W24 from low power mode. It provides the application full control of the W24 operating mode and guarantees that data on the serial interface will not be lost or misinterpreted. Using the WKUPO_N signal The WKUPO_N signal is an active-low W24 output that is asserted high by default. By asserting this signal low, the host can be waked up by W24. 
- Low Power Mode regardless of the original wake-up reason or source. W24 will remain awake while data is transferred. Only when the serial interface transfer is completed and the data has been processed, W24 will return to low power mode automatically, according to the AT+iPSE settings (see Figure 2-9). Figure 2-9: Serial Interface Data Permanent termination of Low Power Mode The W24 low power mode is enabled and disabled by the AT+iPSE command. 
- Chapter 2: Hardware Interface Description Serial Interfaces W24 includes three completely independent serial communications interfaces, which may be used by the application for several purposes (see Figure 2-10). Figure 2-10: Serial Interfaces Block Diagram Primary UART (UART1) The W24 primary UART is a standard 8-signal bus. 
- Serial Interfaces The W24 primary UART supports baud rates 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, as well as the extended high speed rates: 1Mbps, 1.5Mbps and 3Mbps. Auto baud rate detection is supported for baud rates up to 115200 bps. All flow control handshakes are supported: hardware, software, or none. Parity bit and Stop bit definitions are also supported. 
- Chapter 2: Hardware Interface Description USB Device Interface W24 incorporates a standard Universal Serial Bus (USB) interface. The interface consists of the following pins (see Table 2-5): Table 2-5: USB Device Interface Signals (at Host connector) Pin # Pin Name Description 10 USB_VBUS USB bus power 12 USB_DP USB bus serial data 14 USB_DN USB bus serial data The W24 USB electrical interface and protocol conform to the USB 2.0 full-speed specifications. 
- SIM Interface For more details on setting a USB interface for use with G24, please refer to the "Motorola W24 Programmer's Guide - At+i Programmers Manual Description" PN 6802985C10. Note: The maximum length of the W24 USB signals is 1m. SIM Interface W24 incorporates SIM interface intended to support G24 SIM interface, in stacked configuration. 
- Chapter 2: Hardware Interface Description Audio Interface W24 incorporates Audio interface intended to support G24 Audio interface, in stacked configuration. 
- A/D Converter Interface A/D Converter Interface W24 incorporates Analog to Digital Converter interface intended to support G24 ADC interface, in stacked configuration. The interface consists of the following pins (see Table 2-10): Table 2-10: ADC Interface Signals Pin # Pin Name Description 37 ADC1 General purpose A/D 43 ADC2 General purpose A/D 47 ADC3 General purpose A/D The above signals are routed from 70-pin host connector to G24 70-pin connector via W24. 
- Chapter 2: Hardware Interface Description Unused/Reserved Signals W24 provides an interface to unused and reserved G24 signals, to enable their usage in the future. The signals are directly routed from 70-pin host connector to the 70-pin cellular connector. The above pins should be left open. Here is the summary interface consists of the following pins (see Table 2-11): Table 2-11: Internal Interface Signals Pin # May 31, 2008 Pin Name Description 54 LCD_CS N.C 56 LCD_SD N.C 58 LCD_CLK N. 
- Controls and Indicators Interface Controls and Indicators Interface The W24 incorporates several interface signals for controlling and monitoring the module's operation. The following paragraphs describes these signals and their operation. Table 2-12 gives a description of the controls and indicators signals. Table 2-12: Controls and Indicators Pin # Pin Name Description 25 RESET_N W24 system readiness output indicator. When high, W24 is operating. 27 VREF 2.75V regulated output. 
- Chapter 2: Hardware Interface Description Important: The VREF regulator is powered from the W24's main power supply, and therefore any current sourced through this regulator originates from the W24 VCC supply. The overall VCC current consumed by W24 is directly affected by the VREF operation. The W24 current consumption rises with respect to the current drawn from VREF. Table 2-13 gives the VREF specifications. Table 2-13: VREF Specifications Parameter Conditions Min Typ Max Unit 2.7 2.8 2. 
- Controls and Indicators Interface For more details on implementing a GPRS/EGPRS signal for use with G24, please refer to the "Motorola G24 Developer's Guide - Module Hardware Description" PN 6889192V27 Transmission Indicator This signal is routed from the 70-pin host connector to G24 70-pin connector via W24. It is not internally connected to W24 circuits. If the W24 will be used as stand alone only, the signal pin should be left open. 
- Chapter 2: Hardware Interface Description General Purpose I/O W24 incorporates 8 General Purpose I/O interface. 
- General Purpose I/O Pin Name Direction Description GPIO6 / BT_STATE I Used only in 3-Wires coexistence. If Bluetooth is transmitting high priority data, the Bluetooth device shall send a 20 s pulse on this line right after BT_PRIORITY line has been asserted. After this pulse, BT_STATE will go LOW to indicate RX Priority Bluetooth transmission or HIGH to indicate TX Priority BT transmission. GPIO7 / WL_ACTIVE O In 2-Wires coexistence: When High WLAN is transmitting or receiving packets. 
- Chapter 2: Hardware Interface Description Antenna Interface The W24 antenna connector is the RF interface to the WLAN network. The antenna interface consist of an MMCX type connector, which has impedance matched to 50Ω at the relevant WLAN 802.11 b/g frequencies. The antenna or antenna application must be installed properly to achieve best performance. Table 2-15 gives the antenna interface specifications. Table 2-15: Antenna Interface Specifications Parameter Specifications WLAN 802. 
- Antenna Interface 34 Module Hardware Description May 31, 2008 
- Chapter 3: Electrical and Environmental Specifications Absolute Maximum Ratings Table 3-1 gives the maximum electrical characteristics of the W24 interface signals. Caution: Exceeding the values may result in permanent damage to the module. Table 3-1: Maximum Ratings Parameter Conditions VCC Supply May 31, 2008 Min Max Unit -0.3 4.5 V 3.6 V Digital Input Signals (Except for IGN, VBUS, USB_DP, USB_DN) W24 powered on -0.3 Analog Input Signals (Audio, A/D interfaces) W24 powered on -0. 
- Environmental Specifications Environmental Specifications Table 3-2 gives the environmental operating conditions of the W24 module. Caution: Exceeding the values may result in permanent damage to the module. 
- Chapter 3: Electrical and Environmental Specifications Table 3-3: Host 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 190 250 mA 10 100 µA 2.8 2.9 V 3.15 V 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: Host Interface Specifications (Cont.) Level Pin # Signal Name Active Internal H/L PU/PD Parameter Conditions Description I/O Min Typ Max Units UART1: 21 TXD_N UART1 TXD I L 11 RXD_N UART1 RXD O L 9 RTS_N UART1 RTS I L 15 CTS_N UART1 CTS O L 19 DTR_N UART1 DTR I L 15K PU VIH IOUT < 8 mA 2 -0.3 VIL 3.15 0 V 0.8 IOUT < 8 mA V 13 DSR_N UART1 DSR O L VOL 17 DCD_N UART1 DCD O L VOH 2. 
- Chapter 3: Electrical and Environmental Specifications Table 3-3: Host Interface Specifications (Cont.) Level Pin # Signal Name Active Internal H/L PU/PD Parameter Conditions Description I/O Min Typ Max Units Digital Audio: 18 PCM_ DIN Digital audio receive I 20 PCM_ DOUT Digital audio transmit O 22 PCM_CLK Digital audio clock O 24 PCM_FS Digital audio frame sync. 
- Application Interface Specifications Table 3-3: Host Interface Specifications (Cont. 
- Chapter 3: Electrical and Environmental Specifications Table 3-3: Host Interface Specifications (Cont.) Level Signal Name Pin # Active Internal H/L PU/PD Parameter Conditions Description I/O Min Typ Max Units A/D: 37 ADC1 General purpose A/D I 43 ADC2 General purpose A/D I 47 ADC3 General purpose A/D I 45 MSEL_UI D Mode Select Refer to G24 Hardware Description- Stacked Configuration 6889192V27 VIH VIL 2.0 -.03 VOL VOH 2.75 3.6 0.8 V 0. 
- Application Interface Specifications Table 3-4: G24 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 220 490 mA 10 100 µA 3.15 V Power: 1 2 GND Ground 3 4 VIN 5 6 VCC DC power IMAX O VCC = 3. 
- Chapter 3: Electrical and Environmental Specifications Table 3-4: G24 Interface Specifications (Cont. 
- Application Interface Specifications Table 3-4: G24 Interface Specifications (Cont.) Level Pin # Signal Name Active Internal H/L PU/PD Parameter Conditions Description I/O Min Typ Max Units Digital Audio: 18 PCM_ DIN Digital audio receive O 20 PCM_ DOUT Digital audio transmit I 22 PCM_CLK Digital audio clock I 24 PCM_FS Digital audio frame sync. 
- Chapter 3: Electrical and Environmental Specifications Table 3-4: G24 Interface Specifications (Cont. 
- Application Interface Specifications Table 3-4: G24 Interface Specifications (Cont. 
- Chapter 4: Mechanical Specifications Board Dimensions Figure 4-1 describes the W24 mechanical characteristics. 
- Interface Connector Specifications A Stand Alone model of the W24 is shown in Figure 4-2. Figure 4-2: W24 Stand Alone Model Interface Connector Specifications The W24 uses a single 70-pin, 0.5 mm pitch, board to board connector for the host interface, as described in Table 4-1. Table 4-1: W24 host interface connector options W24 Connector Molex 53748-0708 Mating Connector Molex 52991-0708 Stacking Height 3.0 mm Table 4-2 describes the cellular interface connector options. 
- Chapter 4: Mechanical Specifications RF Connector Specifications The W24 uses a standard MMCX receptacle connector for the radio interface. The connector is manufactured by Amphenol, PN MMCX6251S5. Figure 4-3 shows the MMCX connector dimensions. Figure 4-3: MMCX Connector Dimensions Table 4-3 describes the W24 RF connector characteristics. Table 4-3: RF Connector Specifications Parameter Specifications Impedance 50 Ω Rated Voltage 335 VRMS Contact Resistance 5 mΩ center contact 2. 
- RF Connector Specifications Such a cable assembly example is the Huber-Suhner PN 11_MMCX-50-1-2/111_OH, which is illustrated in Figure 4-4. 
- Chapter 4: Mechanical Specifications W24 Mounting The W24 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 W24 to the application board. Using M2 screws with suitable washers to mount the module onto spacers, a bracket or chassis is a recommended design. 
- W24 Mounting For portable products it's recommended put also washer M2 (max. dia. 4.0mm) Recommended screw tightening force - 2.5 Lb*In W24 + G24 Stacked Mounting When G24 module is stacked on W24 and mounted on the host PCB, it is required to use hexagonal spacer (x2) between the two PCB's, see Figure 4-6. Figure 4-6: W24 + G24 Stacked Mounting Recommended spacer dimensions are described in Figure 4-7. Recommended spacer tightening force - 3.0 Lb*In. 
- Chapter 5: Support, Service and Troubleshooting Support 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 M2M Data Module Customer Support Center is ready to assist you on integration issues. Direct Customer. 
- Support • • • • Software version of the unit (AT+i3 command) or model number PCB version (located on the PCB near the RF connector) Severity of the problem Problem description, including: – Setup Configuration (such as Developer Board, handset, host, connections, and so on) – Detailed scenario from startup – Log of all the commands and the responses, beginning from startup • Answers to the following questions: – Was the same scenario tested on the Developer Board and the PC to reproduce the problem? – Ho 
- Chapter 5: Support, Service and Troubleshooting Service The M2M field service department is ready to support you in following cases: 1. To analyze the root cause of a special defect. 2. To replace defected units within the 12 months warranty period. 3. To perform a mass reflash of the W24. Who to Contact? Direct Customer. Use this following email address to contact customer assistance: n2csfs01@motorola.com Indirect Customer. Contact your distributor and not Motorola field service department. 
- Testing a Standalone Unit Testing a Standalone Unit This section describes how to perform a W24 functionality test, whose purpose is to: • Introduce the user to the W24 • Explain how to work with the W24 unit • Describe how to evaluate basic W24 features The test setup provides a wide platform through which a W24 unit can be evaluated. The specific test procedure described below covers only a few of the W24’s many features. Using this setup, you can perform several additional tests on the W24. 
- 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 T TIS Transmitter I 
- 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 Module Hrdware Description May 31, 2008 
- Index A Antenna Installation, x Approvals Regulatory, 4 B Block Diagram Description, 7 E Environmental Specifications, 3 O Organization of Manual, xviii P Physical Specifications, 2 Precautions, ix Product Specifications, 3 R Regulatory Approvals, 4 S Specifications, 2 Environmental, 3 Physical, 2 Standards, x Support Center, 53 T Terms, 2 Testing, 56 U User Operation, ix W W24 Abbreviations, 2 Antenna Installation, x Block Diagram Description, 7 Product Specifications, 2 Regulatory Approvals, 4 S 
- Index Index-2 W-W Module Hardware Description May 31, 2008 
- MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. All other product or service names are the property of their respective owners. ?Copyright 2007 Motorola, Inc. Java? Technology and/or J2ME? : Java and all other Java–based marks are trademarks or registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. UNIX? : UNIX is a registered trademark of The Open Group in the United States and other countries.