Cinterion® Java Terminals Hardware Interface Description Version: DocId: 02 EHSxT_BGS5T_HID_v02 M2M.GEMALTO.
Cinterion® Java Terminals Hardware Interface Description Page 2 of 70 2 Document Name: Cinterion® Java Terminals Hardware Interface Description Version: 02 Date: 2014-08-05 DocId: EHSxT_BGS5T_HID_v02 Status Confidential / Preliminary GENERAL NOTE THE USE OF THE PRODUCT INCLUDING THE SOFTWARE AND DOCUMENTATION (THE "PRODUCT") IS SUBJECT TO THE RELEASE NOTE PROVIDED TOGETHER WITH PRODUCT. IN ANY EVENT THE PROVISIONS OF THE RELEASE NOTE SHALL PREVAIL.
Cinterion® Java Terminals Hardware Interface Description Page 3 of 70 Contents 115 Contents 0 Document History ...................................................................................................... 7 1 Introduction ................................................................................................................. 8 1.1 Related Documents ........................................................................................... 9 1.2 Terms and Abbreviations ...............
Cinterion® Java Terminals Hardware Interface Description Page 4 of 70 Contents 115 5 Mechanics, Mounting and Packaging ..................................................................... 45 5.1 Mechanical Dimensions ................................................................................... 45 5.2 Mounting the Java Terminals........................................................................... 47 5.3 Packaging ...............................................................................
Cinterion® Java Terminals Hardware Interface Description Page 5 of 70 Figures 5 Figures Figure 1: Figure 2: Figure 3: Figure 4: Figure 5: Figure 6: Figure 7: Figure 8: Figure 9: Figure 10: Figure 11: Figure 12: Figure 13: Figure 14: Figure 15: Figure 16: Figure 17: Figure 18: Figure 19: Sample Java Terminal label (BGS5T USB) .................................................... 16 Java Terminals 3D view ..................................................................................
Cinterion® Java Terminals Hardware Interface Description Page 6 of 70 Tables 6 Tables Table 1: Table 2: Table 3: Table 4: Table 5: Table 6: Table 7: Table 8: Table 9: Table 10: Table 11: Table 12: Table 13: Table 14: Table 15: Table 16: Table 17: Table 18: Table 19: Table 20: Table 21: Table 22: Table 23: Table 24: Table 25: Table 26: Cinterion® Java Terminals overview ................................................................. 8 Terms and abbreviations..........................................
Cinterion® Java Terminals Hardware Interface Description Page 7 of 70 0 Document History 7 0 Document History Preceding document: "Cinterion® Java Terminals Hardware Interface Description" Version 01 New document: "Cinterion® Java Terminals Hardware Interface Description" Version 02 Chapter What is new 1.4 Revised product label shown in Figure 1. 3.7 Revised section with regard to the Weidmueller pin availability. 4.1 Completed Table 15 giving absolute maximum ratings. 4.
Cinterion® Java Terminals Hardware Interface Description Page 8 of 70 1 Introduction 16 1 Introduction This document1 describes the hardware of the Cinterion® Java Terminals. The Java Terminals come in three variants depending on the included Cinterion® module and the available interfaces: • • • EHS5T RS485 contains a Cinterion® EHS5-E module and implements a USB 2.0 interface with a USB-B connector as well as a 6-pole Western jack as plug-in power supply connector.
Cinterion® Java Terminals Hardware Interface Description Page 9 of 70 1.1 Related Documents 16 1.1 [1] [2] Related Documents AT Command Set for your Java Terminal product Release Notes for your Java Terminal product To visit the Gemalto M2M GmbH Website please use the following link: http://m2m.gemalto.com 1.
Cinterion® Java Terminals Hardware Interface Description Page 10 of 70 1.
Cinterion® Java Terminals Hardware Interface Description Page 11 of 70 1.3 Regulatory and Type Approval Information 16 1.3 Regulatory and Type Approval Information 1.3.1 Directives and Standards Java Terminals have been designed to comply with the directives and standards listed below1.
Cinterion® Java Terminals Hardware Interface Description Page 12 of 70 1.3 Regulatory and Type Approval Information 16 Table 5: Standards of European type approval ETSI EN 301 489-1 V1.9.2 Candidate Harmonized European Standard (Telecommunications series) Electro Magnetic Compatibility and Radio spectrum Matters (ERM); Electro Magnetic Compatibility (EMC) standard for radio equipment and services; Part 1: Common Technical Requirements ETSI EN 301 489-7 V1.3.
Cinterion® Java Terminals Hardware Interface Description Page 13 of 70 1.3 Regulatory and Type Approval Information 16 Table 7: Standards of the Ministry of Information Industry of the People’s Republic of China SJ/T 11363-2006 “Requirements for Concentration Limits for Certain Hazardous Substances in Electronic Information Products” (2006-06). SJ/T 11364-2006 “Marking for Control of Pollution Caused by Electronic Information Products” (2006-06).
Cinterion® Java Terminals Hardware Interface Description Page 14 of 70 1.3 Regulatory and Type Approval Information 16 1.3.2 Safety Precautions The following safety precautions must be observed during all phases of the operation, usage, service or repair of any cellular terminal or mobile incorporating Java Terminals.
Cinterion® Java Terminals Hardware Interface Description Page 15 of 70 1.3 Regulatory and Type Approval Information 16 IMPORTANT! Cellular terminals or mobiles operate using radio signals and cellular networks. In that case connections cannot be guaranteed at all times under all conditions. Therefore, you should never rely solely upon any wireless device for essential communications, for example emergency calls.
Cinterion® Java Terminals Hardware Interface Description Page 16 of 70 1.4 Product Label 16 1.4 Product Label The label fixed to the bottom of a Java Terminal comprises the following information. 2 3 4 1 5 8 6 9 7 10 11 12 14 15 13 16 Figure 1: Sample Java Terminal label (BGS5T USB) Table 9: Java Terminals label information No.
Cinterion® Java Terminals Hardware Interface Description Page 17 of 70 2 Product Concept 19 2 Product Concept 2.1 Key Features at a Glance Feature Implementation General Incorporates Cinterion® Java module The Java module handles all signal and data processing within the Java Terminals. Internal software runs the application interface and the complete GSM/UMTS protocol stack.
Cinterion® Java Terminals Hardware Interface Description Page 18 of 70 2.
Cinterion® Java Terminals Hardware Interface Description Page 19 of 70 2.1 Key Features at a Glance 19 Feature Implementation Interfaces USB interfaces USB 2.0 Slave interface RS232 RS-232 interface for AT commands and data: • Supports RTS/CTS hardware handshake • Supports software XON/XOFF flow control • Multiplex ability according to GSM 07.
Cinterion® Java Terminals Hardware Interface Description Page 20 of 70 3 Interface Description 35 3 Interface Description 3.
Cinterion® Java Terminals Hardware Interface Description Page 21 of 70 3.2 Block Diagram 35 3.2 Block Diagram Figure 3 shows a block diagram of a sample configuration that incorporates a Java Terminal and typical accessories.
Cinterion® Java Terminals Hardware Interface Description Page 22 of 70 3.3 Terminal Circuit 35 3.3 Terminal Circuit Figure 4 shows a general Java Terminal block diagram that includes all variants. Not every interface is available for all Terminal products. GPIO Driver bidirect.
Cinterion® Java Terminals Hardware Interface Description Page 23 of 70 3.4 Operating Modes 35 3.4 Operating Modes The table below briefly summarizes the various operating modes referred to in the following chapters. Table 10: Overview of operating modes Normal operation GSM IDLE Software is active. Once registered to the GSM network paging with BTS is carried out. The Terminal is ready to send and receive. Watchdog active. GSM TALK GSM DATA Connection between two subscribers is in progress.
Cinterion® Java Terminals Hardware Interface Description Page 24 of 70 3.5 RS-232 Interface 35 3.5 RS-232 Interface The RS-232 interface is not available for EHS5T RS485. The interface is implemented as a serial asynchronous transmitter and receiver conforming to ITU-T V.24 Interchange Circuits DCE. It is configured for 8 data bits, no parity and 1 stop bit, and can be operated at bit rates from 1200bps to 921kbps. Autobauding supports bit rates from 1.2kbps to 230kbps.
Cinterion® Java Terminals Hardware Interface Description Page 25 of 70 3.6 USB Interface 35 In addition, the modem control signals DTR, DSR, DCD and RING are available. The modem control signal RING (Ring Indication) can be used to indicate, to the cellular device application, that a call or Unsolicited Result Code (URC) is received. There are different modes of operation, which can be set with AT commands.
Cinterion® Java Terminals Hardware Interface Description Page 26 of 70 3.
Cinterion® Java Terminals Hardware Interface Description Page 27 of 70 3.7 Weidmueller GPIO Interface 35 The following Table 12 shows the availablility of the Weidmueller pins for various Java Terminal variants.
Cinterion® Java Terminals Hardware Interface Description Page 28 of 70 3.7 Weidmueller GPIO Interface 35 EHS5T‘s RS-485 interface is based on the TIA/EIA-485 standard defining electrical characteristics of drivers and receivers for use in balanced multidrop communication systems. RS-485 is used in a lot of different fieldbus systems like Profibus, Interbus, Modbus and P-net.
Cinterion® Java Terminals Hardware Interface Description Page 29 of 70 3.8 Power Supply 35 3.8 Power Supply The power supply of the Java Terminals has to be a single voltage source of VPLUS=8V…30V capable of providing a peak current (pulsed 2x577ms at T=4.615ms) of about 1.2A at 8V during an active transmission. The uplink burst causes strong ripple (drop) on the power lines. The drop voltage should not exceed 1V, but the absolute minimum voltage during drops must be >7.6V.
Cinterion® Java Terminals Hardware Interface Description Page 30 of 70 3.8 Power Supply 35 3.8.1 Turn Java Terminals on Java Terminals are turned on by plugging an appropriate power supply unit between PLUS and GND of the 6-pole Western jack. While the RST_IN pin (pin 3) is not active (voltage <2V) you can start the Java Terminals by activating the RS-232 DTR line if in POWER DOWN mode. The IGT_IN signal (pin 4) may be used to switch on Java Terminals if in POWER DOWN mode.
Cinterion® Java Terminals Hardware Interface Description Page 31 of 70 3.8 Power Supply 35 Emergency restart: • In the event of software hang-ups etc. the Java Terminals can be restarted by applying a voltage >8V to the RST_IN pin (pin 3) for more than 10ms. The RST_IN signal restarts the Java Terminals. Caution: Use the RST_IN pin only when, due to serious problems, the software is not responding for more than 5 seconds.
Cinterion® Java Terminals Hardware Interface Description Page 32 of 70 3.9 Automatic thermal shutdown 35 3.9 Automatic thermal shutdown An on-board NTC measures the temperature of the built-in BGS2 module. If over- or undertemperature is detected on the module the Java Terminals automatically shut down to avoid thermal damage to the system. Table 17 specifies the ambient temperature threshold for the Java Terminals.
Cinterion® Java Terminals Hardware Interface Description Page 33 of 70 3.12 SIM Interface 35 3.12 SIM Interface The SIM interface is intended for 1.8V and 3V SIM cards in accordance with GSM 11.12 Phase 2. The card holder is a five wire interface according to GSM 11.11. A sixth pin has been added to detect whether or not a SIM card is inserted.
Cinterion® Java Terminals Hardware Interface Description Page 34 of 70 3.13 Status LEDs 35 3.13 Status LEDs Java Terminals have two LEDs indicating its operating states through the semitransparent casing: • A green LED indicates whether the Java Terminals are ready to operate. • A yellow LED indicates the network registration state of the Java Terminals.
Cinterion® Java Terminals Hardware Interface Description Page 35 of 70 3.14 RF Antenna Interface 35 3.14 RF Antenna Interface An external RF antenna is connected via the Java Terminals’s female SMA connector that is also the antenna reference point (ARP). Figure 12: Antenna connector The system impedance is 50. In any case, for good RF performance, the return loss of the customer application’s antenna should be better than 10dB (VSWR < 2).
Cinterion® Java Terminals Hardware Interface Description Page 36 of 70 4 Electrical and Environmental Characteristics 44 4 Electrical and Environmental Characteristics 4.1 Absolute Maximum Ratings Table 15: Absolute maximum ratings Parameter Port / Description Min. Max. Unit Supply voltage PLUS -40 30 V Overvoltage PLUS / for 1min 33 V Input voltage for on/off control lines IGT_IN, RST_IN -5 30 V RS-232 input voltage TXD, DTR, RTS -25 +25 V -0.
Cinterion® Java Terminals Hardware Interface Description Page 37 of 70 4.2 Operating Temperatures 44 4.2 Operating Temperatures Table 17: Board temperature of Java module Parameter Min Max Unit Normal operation -30 +85 °C -40 to -30 +85 to +90 °C <-40 >+90 °C Extended operation1 Automatic thermal shutdown 2 1. Extended operation allows normal mode speech calls or data transmission for limited time until automatic thermal shutdown takes effect.
Cinterion® Java Terminals Hardware Interface Description Page 38 of 70 4.3 Storage Conditions 44 4.3 Storage Conditions Table 18: Storage conditions Type Condition Unit Reference Air temperature: Low High -30 +75 °C ETS 300 019-2-1: T1.2, IEC 60068-2-1 Ab ETS 300 019-2-1: T1.2, IEC 60068-2-2 Bb Humidity relative: Low High Condens. 10 90 at 30°C 90-100 at 30°C % --ETS 300 019-2-1: T1.2, IEC 60068-2-56 Cb ETS 300 019-2-1: T1.
Cinterion® Java Terminals Hardware Interface Description Page 39 of 70 4.4 Electrical Specifications of the Application Interface 44 4.4 Electrical Specifications of the Application Interface 4.4.1 On/Off Control Table 19: On/Off control line specifications Parameter Description Conditions Min. Vhigh Input voltage IGT_IN, RST_IN active high Input voltage DTR active high Vlow Vhigh Vlow Typ Max. Unit 4 28 V 0 3 V 3 +15 V -15 1.
Cinterion® Java Terminals Hardware Interface Description Page 40 of 70 4.4 Electrical Specifications of the Application Interface 44 4.4.4 Weidmueller GPIO Interface Table 21: Weidmueller GPIO interface specifications (requirements) Function Signal name IO Signal form and level Comment 8-pin, 12pin connectors for: GPIO, Power, I2C and ASC1, SPI, RS-485 GPIO 6-8 GPIO 11-15 GPIO 20-21 IO VOLmax = 0.1V at I = 100µA VOLmax = 0.55V at I = 32mA VOHmin = VCCref - 0.
Cinterion® Java Terminals Hardware Interface Description Page 41 of 70 4.5 Power Supply Ratings 44 4.5 Power Supply Ratings Table 22: Power supply specifications Parameter Description Conditions Typical VPLUS Allowed voltage ripple (peak-peak), drop during transmit burst peak current Power control level for Pout max1 1 1 1 V IPLUS 2 Average supply current (average time 3 min.) Power Down mode @8V 12.4 20.7 33.5 mA @30V 6.5 9.8 13.7 Average GSM supply current (average time 3 min.
Cinterion® Java Terminals Hardware Interface Description Page 42 of 70 4.5 Power Supply Ratings 44 Table 22: Power supply specifications Parameter Description Conditions IPLUS Average UMTS supply current (average time 3 min.) Typical Unit EHS5T EHS6T BGS5T RS485 USB USB IDLE mode @8V 79 --- @30V 10.7 12.3 --- UMTS DATA (Band I; 23dBm) @8V 411 --- @30V 88.3 113.9 --- UMTS DATA Band II; 23dBm @8V --- 447.6 --- @30V --- 123.8 --- UMTS DATA @8V --Band V/VI; 23dBm @30V --- 413.
Cinterion® Java Terminals Hardware Interface Description Page 43 of 70 4.6 Antenna Interface 44 4.6 Antenna Interface Table 23 lists RF antenna interface specifications for the Java Terminals. Please note that the specified conditions may not apply to or be supported by all terminals.
Cinterion® Java Terminals Hardware Interface Description Page 44 of 70 4.6 Antenna Interface 44 Table 23: RF Antenna interface GSM / UMTS Parameter RF Power @ ARP with 50Ohm Load, (with maximum reduction) BGS5T USB does not support EDGE, deviating values are given in brackets Conditions GPRS, 1 TX EDGE, 1 TX GPRS, 2 TX EDGE, 2 TX GPRS, 3 TX EDGE, 3 TX GPRS, 4 TX EDGE, 4 TX Min. Typical Max.
Cinterion® Java Terminals Hardware Interface Description Page 45 of 70 5 Mechanics, Mounting and Packaging 48 5 Mechanics, Mounting and Packaging 5.1 Mechanical Dimensions Figure 13 shows a 3D view of the Java Terminal and provides an overview of the mechanical dimensions of the board. For further details see Figure 14. To allow for an easier mechanical implementation into an external application a set of 3D STP data for the Java Terminals is attached to this PDF.
Cinterion® Java Terminals Hardware Interface Description Page 46 of 70 5.
Cinterion® Java Terminals Hardware Interface Description Page 47 of 70 5.2 Mounting the Java Terminals 48 5.2 Mounting the Java Terminals There are a number of ways to mount the Java Terminals: • • • • Java Terminals can be attached to a rail installation or other surface using the two provided screw holes. Java Terminals can be fastened to a rack or holding using the two provided fixtures for cable straps.
Cinterion® Java Terminals Hardware Interface Description Page 48 of 70 5.3 Packaging 48 5.3 Packaging Java Terminals come in terminal boxes: • Terminal box size: 191mm x 143mm x 44mm.
Cinterion® Java Terminals Hardware Interface Description Page 49 of 70 6 Full Type Approval 52 6 Full Type Approval 6.
Cinterion® Java Terminals Hardware Interface Description Page 50 of 70 6.2 Restrictions 52 6.2 Restrictions Later enhancements and modifications beyond the certified configuration require extra approvals. Each supplementary approval process includes submittal of the technical documentation as well as testing of the changes made. • No further approvals are required for customer applications that comply with the approved Java Terminals configuration.
Cinterion® Java Terminals Hardware Interface Description Page 51 of 70 6.5 Compliance with FCC and IC Rules and Regulations 52 6.5 Compliance with FCC and IC Rules and Regulations As an integrated product, the Java Terminals EHS6T USB and BGS5T RS485 are fully compliant with the grant of the FCC Equipment Authorization and the Industry Canada Certificates issued for the built-in Java modules, and therefore, bear the labels “Contains FCC ID QIPEHS6” or “Contains FCC ID QIPBGS5.
Cinterion® Java Terminals Hardware Interface Description Page 52 of 70 6.5 Compliance with FCC and IC Rules and Regulations 52 Notes (IC): (EN) This Class B digital apparatus complies with Canadian ICES-003 and RSS-210. Operation is subject to the following two conditions: (1) this devive may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
Cinterion® Java Terminals Hardware Interface Description Page 53 of 70 7 List of Parts and Accessories 53 7 List of Parts and Accessories Table 24: List of parts and accessories Description Supplier Ordering information Java Terminals Gemalto M2M Ordering number EHS5T RS485: L30960-N2730-A100 EHS6T USB: L30960-N2740-A100 BGS5T USB: L30960-N2720-A100 Power supply unit Gemalto M2M Terminal Power Supply (incl.
Cinterion® Java Terminals Hardware Interface Description Page 54 of 70 8 Appendix A: (Hardware) Watchdog 69 8 Appendix A: (Hardware) Watchdog The watchdog is part of the Java Terminals and connected to the Java module itself (see also Figure 4).
Cinterion® Java Terminals Hardware Interface Description Page 55 of 70 8.2 Restart Conditions 69 8.1.1 Reset stages There are up to three possible escalation stages during a module reset: • • • First stage (regular fast shutdown): The watchdog shuts down the module via an internal fast shutdown signal.
Cinterion® Java Terminals Hardware Interface Description Page 56 of 70 8.3 Configuration via ASC0 Interface 69 8.3 Configuration via ASC0 Interface The complete hardware watchdog functionality can be configured via the serial interface ASC0 as described in this section. The watchdog listens on the module's TXD0 line exclusively at the low baudrate 1200bps, and gives no feedback.
Cinterion® Java Terminals Hardware Interface Description Page 57 of 70 8.3 Configuration via ASC0 Interface 69 The following watchdog configuration commands are available: • • • • • • • • • • • Watchdog on/off - see Section 8.3.1.1 Test mode - see Section 8.3.1.2 Repetitive module reset - see Section 8.3.1.3 UART reset - see Section 8.3.1.4 GPIO reset - see Section 8.3.1.5 Restart delay - see Section 8.3.1.6 Always on - see Section 8.3.1.7 Load default values - see Section 8.3.1.
Cinterion® Java Terminals Hardware Interface Description Page 58 of 70 8.3 Configuration via ASC0 Interface 69 8.3.1.2 Test Mode Command TEST_MODE Parameter Type Boolean Range 0: Off (Exit test mode) 1: On (Enter test mode) Default 0: Off Non-volatile Yes Example WD=TEST_MODE,0,0 WD=TEST_MODE,1,1 // Exit test mode // Enter test mode This commands configures the watchdog‘s test mode. In test mode the watchdog operates normally, but does not actually perform a module reset.
Cinterion® Java Terminals Hardware Interface Description Page 59 of 70 8.3 Configuration via ASC0 Interface 69 8.3.1.4 UART Reset Command RST_UART Parameter Type Milliseconds Range 0 .. 232-1 Default 0: Feature is disabled Non-volatile Yes Example WD=RST_UART,600000,6 // Resets the module if there was no activity on the RXD0 line for 10 minutes This command configures a module reset, if no UART activity from the module was observed for the specified amount of time - RST_UART.
Cinterion® Java Terminals Hardware Interface Description Page 60 of 70 8.3 Configuration via ASC0 Interface 69 8.3.1.6 Restart Delay Command MIN_START_TIME Parameter Type Milliseconds Range 0 .. 232-1 Default 18000000ms (30 minutes) Non-volatile Yes Example WD=MIN_START_TIME,18000000,9 // Prevents module resets for 30 minutes after each module startup, and after the watchdog becomes active This command configures the MIN_START_TIME timeout value.
Cinterion® Java Terminals Hardware Interface Description Page 61 of 70 8.3 Configuration via ASC0 Interface 69 8.3.1.7 Always On Command ALWAYS_ON Parameter Type Milliseconds Range 0 .. 232-1 Default 0: Feature is disabled Non-volatile Yes Example WD= ALWAYS_ON,60000,6 // Observes the module and restarts it 60 seconds after it has been turned off This command configures the on/off-state observation of the module by specifying a timeout value for ALWAYS_ON.
Cinterion® Java Terminals Hardware Interface Description Page 62 of 70 8.3 Configuration via ASC0 Interface 69 8.3.1.9 Change the Watchdog‘s I2C Address Command I2C_ADDR Parameter
Type Number Range 1-127 Default 106 (0x6A) Non-volatile Yes Example WD= I2C_ADDR,87,15 // Changes the I2C address to 87d (0x57) The watchdog‘s I2C slave address can be changed to any 7-bit address.Cinterion® Java Terminals Hardware Interface Description Page 63 of 70 8.3 Configuration via ASC0 Interface 69 8.3.1.10 Set GPIO Direction Command GPIO_DIR Parameter Type Number Range 0-1023 Default 993 (0x3E1, 1111100001b) Non-volatile Yes Example WD= GPIO_DIR,682,16 // Sets the GPIOs alternating to output and input (binary value: 1010101010b) This command configures the input/output direction of level-shifters to the module‘s externally available GPIO pins.
Cinterion® Java Terminals Hardware Interface Description Page 64 of 70 8.3 Configuration via ASC0 Interface 69 8.3.1.
Cinterion® Java Terminals Hardware Interface Description Page 65 of 70 2 8.4 Configuration via I C Interface 69 8.4 Configuration via I2C Interface While the complete watchdog functionality may be configured via ASC0 interface (for details see Section 8.3) some of the configuration commands can also be configured during runtime via I2C interface as described in this section.
Cinterion® Java Terminals Hardware Interface Description Page 66 of 70 2 8.4 Configuration via I C Interface 69 8.4.1.3 I2C Protocol Overview In write mode (i.e., slave address “0xD4“), one address byte and one data byte is sent to the Java Terminal/Watchdog. The address byte specifies a register to write the data byte to. The data byte value is only written, if it is valid, i.e., in the specified range.
Cinterion® Java Terminals Hardware Interface Description Page 67 of 70 2 8.4 Configuration via I C Interface 69 Table 25: Address register for I2C commands Register address Read/ Write Description Name NonDefault volatile Value range 0x50 R/W ADC1_IN/DSR0 ADCDSRR Yes 0x00 0: Analog In 1: Digital Out 0x80 W Trigger delay. Specifies delay time for a reset. If a trigger delay time is specified, the watchdog is prevented from resetting the module for the given time.
Cinterion® Java Terminals Hardware Interface Description Page 68 of 70 2 8.4 Configuration via I C Interface 69 Examples The following two samples show how the watchdog can be configured via the I2C interface, using the AT^SSPI command (at RS-232/ASC0) to transfer the I2C user data. Please refer to [1] for more information on the AT command AT^SSPI and on how to configure and control the data transfer over the I2C interface.
Cinterion® Java Terminals Hardware Interface Description Page 69 of 70 2 8.4 Configuration via I C Interface 69 The second example listed below reads out the firmware version, it therefore uses a read register marked as “R“ in Table 25. However, except for the status address register (SR) no information can be directly retrived from an address register itself, but only indirectly by means of a so-called read-address-register (RAR).
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