NOKIA 12 RX-2, RX-9 Copyright © Nokia 2003-2004. All rights reserved. Copyright ©2003-2004 Nokia. All rights reserved | Date: 28.01.04, ver. 1.
Contents 1. INTRODUCTION ...................................................................................................................................................1 2. MECHANICAL INTEGRATION .............................................................................................................................1 3. ELECTRICAL INTEGRATION ................................................................................................................................3 3.
6.2.1 SIM TESTING ........................................................................................................................................ 25 6.2.2 POWER SUPPLY ................................................................................................................................... 25 6.2.3 EMC/ESD AND SAFETY ........................................................................................................................ 25 6.2.4 RF TESTING...................................
References Ref 1. Nokia 12 Product Specification Ref 2.
IMP Information Module Profile IP Internet Protocol ISDN Integrated Services Digital Network ISO International Organization for Standardization J2EE Java 2 Enterprise Edition J2ME Java 2 Micro Edition J2SE Java 2 Standard Edition LOCI Local Information M2M Machine to machine MIDP Mobile Information Device Profile MMCX Miniature Microax Connector MSISDN Mobile Subscriber International ISDN Number ORB Object Request Broker OTA Over The Air PC Personal Computer PCM Pulse Code Mod
1. INTRODUCTION The Nokia 12 GSM connectivity module has been designed for M2M (machine-to-machine) applications and other wireless solutions. There are two versions of the Nokia 12: • RX-2 dual-band GSM device supporting EDGE, GPRS, HSCSD, CSD, and SMS in EGSM 900/GSM 1800 MHz bands • RX-9 dual band GSM device supporting EDGE, GPRS, CSD, SMS in GSM 850/GSM 1900 MHZ bands. The Nokia 12 can be used in several applications due to its three different operating modes.
The dimensions of the Nokia 12 are shown in Figure 1. Figure 1 Physical dimensions of the Nokia 12 GSM module Copyright © Nokia 2003-2004. All rights reserved.
3. ELECTRICAL INTEGRATION 3.1 M2M SYSTEM CONNECTOR All signals are routed through the M2M system connector, except the antenna, which is routed through the MMCX RF connector. The M2M system connector is a 60-pin (2 rows, 30 per row) 1.27 mm pitch pin header connector. It has a frame that helps in the assembly and also holds the Nokia 12 firmly in position. The possible mating connector is described in Table 1. Supplier Part Number Description SAMTEC SFMC-130-02-S-D Female connector.
Parameter Value Note Supply Voltage (VBB) 3.6…4.0 V (3.8V typical) Voltage must never drop below the low limit Logic voltage (IO voltage) 1.8…5.0 V DC output source or sink current (any I/O pin, user adjustable) 0…5 V Operating temperature range - 10…+55 °C Upper limit depending on IO voltage Table 3 Recommended operating conditions 3.1.1 Electrical characteristics All digital outputs (1-9) are open drain outputs, and all pins have a 10 kohm pull-up resistor to IO voltage.
Parameter Value Application driving impedance <100 ohm Low level input voltage (IO_Voltage 1.8-5V) 0.15 V max. High level input voltage (IO_Voltage 1.8-5V) 1.6V min. Table 6 Digital input characteristics Parameter Nominal Note Differential input voltage range for microphone input (MicP & MicN) 0.316 Vpp 2.
Figure 2 Pin numbering of the Nokia 12 M2M system connector Name Pin Pin Name VBB 1 2 GND VBB 3 4 GND VBB 5 6 GND VBB 7 8 GND VBB 9 10 GND NC 11 12 NC NC 13 14 NC MICP 15 16 EARP MICN 17 18 EARN AD3 19 20 AD2 PCMDCLK 21 22 PCMSCLK PCMTX 23 24 PCMRX RESET T 25 26 RESET A PORT1RX 27 28 MBUS PORT1TX 29 30 OUTPUT2 OUTPUT3 31 32 OUTPUT4 OUTPUT5 33 34 INPUT6 INPUT5 35 36 AD1 Copyright © Nokia 2003-2004. All rights reserved.
BSI 37 38 PORT2RX PORT2TX 39 40 PORT2RTS PORT2CTS 41 42 OUTPUT8 INPUT8 43 44 OUTPUT9 SLEEPX 45 46 INPUT11 VSIM 47 48 SIMRST SIMCLK 49 50 SIMDATA SIMDET 51 52 IO VOLTAGE OUTPUT1/P3RX 53 54 INPUT4/P3TX INPUT10 55 56 INPUT7 OUTPUT6 57 58 OUTPUT7 INPUT9 59 60 NC Table 9 M2M system connector pin-out More detailed descriptions and usage of pins are shown in Table 10 and Table 11. Pin Name Description 1 VBB Terminal Power. Voltage nominal 3.8 V, 3.6 V – 4.
12 NC Reserved 13 NC Reserved 14 NC Reserved 15 MICP MICP is used with analog audio as differential positive input. The line is AC coupled at the device end. Frequency response is 300 Hz-3400 Hz. See chapter 3.6.1. 16 EARP EARP is used with analog audio as differential positive output. Frequency response is 300 Hz-3400 Hz. See chapter 3.6.1. 17 MICN MICN is used with analog audio as differential negative input. The line is AC coupled at the device end. Frequency response is 300 Hz-3400 Hz.
31 OUTPUT3 Digital output from module. Logic level is set by the IO voltage pin (pin 52). If the AT command mode is active, this pin is used as Data Set Ready output for Port 1. 32 OUTPUT4 Digital output from module. Logic level is set by the IO voltage pin (pin 52). If the AT command mode is active, this pin is used as Clear To Send output for Port 1. 33 OUTPUT5 Digital output from module. Logic level is set by the IO voltage pin (pin 52).
48 SIMRST Reset signal for SIM card, generated by module. See chapter 3.5. 49 SIMCLK Clock signal for SIM card, generated by module. See chapter 3.5. 50 SIMDATA Data line between SIM card and module. See chapter 3.5. 51 SIMDET SIM card detection signal. See chapter 3.5. 52 IO VOLTAGE Logic level for the application is set by this pin. Voltage must be 1.8 V - 5.0 V. See chapter 3.3. 53 OUTPUT1 / PORT3RX Digital output to module. Logic level is set by the IO voltage pin (pin 52).
OUTPUT7 58 x x X x OUTPUT8 42 x x X x OUTPUT9 44 x x X x INPUT11 46 x x X x INPUT4 54 x x X x Functions as P3TX, when serial port 3 in use INPUT5 35 x X x Functions as DTR, when serial port 1 in use (=AT command mode, FBUS, Corba over D9) INPUT6 34 x X x Functions as RTS, when serial port 1 in use (=AT command mode, FBUS, Corba over D9) INPUT7 56 x x X x INPUT8 43 x x X x INPUT9 59 x x X x INPUT10 55 x x X x PCMDCLK 21 x X x Digital aud
3.2 GROUNDING There is only one common ground for the power supply and I/Os in the Nokia 12 GSM module. There are no separate analog/digital ground pins in the M2M system connector. All ground pins must be connected together at the application end. Grounding through screws is not allowed. The mounting screws must be isolated from the application ground. 3.3 POWER SUPPLY The Nokia 12 GSM module is powered by an application.
3.4 SERIAL COMMUNICATION The Nokia 12 GSM module is accessible through three different asynchronous serial interfaces with different protocols. The pins provide one asynchronous channel with a simple handshaking capability. The first asynchronous channel is provided by PORT1. This port can be used with full 8 signal RS232 handshaking signals. The second asynchronous channel is provided by PORT2 with a simple handshaking capability (only RTS and CTS).
Supplier Part Number Description Amphenol M-C707_10M006_522_2 SIM reader with lid open indication switch Table 12 Possible SIM card reader supplier DATA NC GND 7 5 5 3 2 1 CLK RST V S IM Figure 4 SIM connections The Nokia 12 GSM module supports 1.8 V and 3 V SIM cards. The Nokia 12 automatically sets the correct voltage for the SIM card used. The SIM card reader must have a switch that indicates when the SIM card is being removed, so that it can be shut down correctly by the Nokia 12.
The analog TX path (from the external application to the Nokia 12 GSM module) has a DC isolation inside the Nokia 12 with 100 nF capacitors, and these capacitors together with the microphone preamplifier input impedance form a 1st order high pass filter with 32 Hz roll off (-3 dB). Name Symbol Min Differential input voltage range for microphone input (MicP & MicN) Type Max Units 0.316 2.0 VPP Microphone amplifier input resistor RMIC 30 50 Common mode voltage level VCM 1.3 1.35 kΩ 1.
3.6.2 Analog audio example Analog TX path: Due to the small audio signal level of the electret microphone, it is recommended to use a pre-amplifier for the microphone before connecting it to the Nokia 12 GSM module. The differential connection is strongly recommended to protect against RF noise. A microphone pre-amplifier with 20 dB input gain is recommended for reasonable uplink audio levels. Microphone input: See Figure 5.
R1 L1 R2 C1 C2 J1 J2 Figure 6 Earphone application circuit The recommended earphone type is dynamic. The maximum allowed load for this application is 32 ohm. In the example circuit, L1 is the common mode choke for the suppression of common mode disturbance in the earphone lines. J1 and J2 are surge protector gaps for ESD protection. These can be replaced with varistor or any other state-of-the-art ESD protection component. C1 and C2 are used for RF noise filtering.
VDD C4 R2 Differential Audio Boomer VDD EarP EarN C1 R1 C2 + R3 R5 R4 VDD R6 Bypass Bias C3 + Shutdown control Figure 7 Differential external power amplifier connection Refer to Audio Boomer Manufacturer and loudspeaker application notes for information on maximum safe ratings for selected components. Also keep in mind the limitation of Vdd to avoid overdriving the Audio Boomer and thus distorting the output signal unnecessarily. 3.6.
3.7.1 Sign-Extended Linear Code PCM (Pulse Code Modulation) digital audio data transmission between the Nokia 12 and the application is handled with four signals: PCMDCLK, PCMSCLK, PCMTX, and PCMRX. The format of the data transmission is sign-extended 13-bit linear code. Total of 16 bits are transmitted, and higher order bits must be sign-extended. Transmission of data commences after frame sync (PCMSCLK) rises high for one PCMDCLK clock cycle.
4. RF AND ANTENNA INTEGRATION There are two versions of the Nokia 12: • RX-2 dual-band GSM device supporting EDGE, GPRS, HSCSD, CSD, and SMS in EGSM 900/GSM 1800 MHz bands • RX-9 dual band GSM device supporting EDGE, GPRS, CSD, SMS in GSM 850/GSM 1900 MHZ bands. RX-2 12 RF requirements follow the ETSI EGSM900/GSM1800 phase2+ specifications. RX-9 12 RF requirements follow the ETSI GSM850/GSM1900 phase2+ specifications.
When designing the application, it is important to take care of RF emissions. Do not place any sensitive components or striplines near the antenna or the antenna connector. 5. TEST BOARD FOR THE NOKIA 12 The test board is a hardware development tool for application developers and system integrators. It manages DC voltages, SIM card, I/O’s, and audios. You can measure several interfaces by pin headers, and the software interfaces of D9 connectors can be seen and handled.
Figure 11 5.3 RS-232 CONVERTERS All three serial ports of the Nokia 12 are equipped with RS-232 level translators and D9 connector in the test board. If they are not used, there is a switch to set it in the Hi-Z mode. 5.4 AUDIO For testing analog audio, the test board includes a connector for the Nokia HSU-3 handset. HSU-3 can be purchased from Nokia dealers. Copyright © Nokia 2003-2004. All rights reserved.
Figure 12 Test board microphone amplifier The test board and its components are shown in Figure 13. Switch usage can be seen in Figure 14. Figure 13 Test board components Copyright © Nokia 2003-2004. All rights reserved.
Figure 14 Switch usage in test board 6. CERTIFICATIONS The test house requires the following documentation from the application integrator for type approval tests: • Hardware description • Schematics • Block diagram • PWB/component layout • Bill of materials • HW/SW versions used in tests.
6.1.1 RX-2: The Nokia 12 GSM module is a CE marked device. In order to show compliance to R&TTE requirements, the integrator has to show that all the instructions in this document have been followed in the integration, and a declaration of conformity has been written. The final product must carry CE marking to show compliance with all the directives that are applicable to it.
6.2.4 RF testing The antenna must be connected to the Nokia 12 GSM module as this document instructs. The antenna impedance has to be as specified in chapter 4. Further passive RF testing for the type approval is not required. Radiation performance is always the responsibility of the integrator. If the antenna specification is not followed, the Nokia 12 type approval is not valid. 6.2.
