铱星模块Q9602资料.pdf

DRAFT COPY ONLY=2.0V Off:=0.5V 6 DF_S_TX Input Data port,serial data input 3.3V Digital 7 DF_S_RX Output Data port,serial data output 3.3V Digital 8 SIG_GND Input Signal ground 0V 9 DF_ DCD Output Data port,Data Carrier Detect 3.3V Digital 10 DF_ DSR Output Data port,Data Set Ready 3.3V Digital 11 DF_ CTS Output Data port,Clear-to-Send 3.3V Digital 12 DF_RI Output Data port,Ring Indicator 3.3V Digital 13 DF_ RTS Input Data port,Request-to-Send 3.3V Digital 14 DF_ DTR Input Data port,Data Terminal Ready 3.3V Digital 15 SIG_GND Input Signal ground 0V 16 Reserved 17 Reserved 18 SIG_GND Input Signal ground 0V 19 NETWORK AVAILABLE Output Signals when the 9602 can see an available satellite network 3.3V Digital Available=high Not available=low 20 SUPPLY_OUT Output Supply power indicator output+3.3 V 5mA maximum Table 8:Limits for 3.3V Digital Signals Parameter Symbol Min Typ Max Unit Input High Voltage VIH 2.0 5.5 V Input Low Voltage VIL-0.3 0.8 V Output High Voltage VOH 2.4 V Output Low Voltage VOL 0.4 V Low Level Output Current IOL 4.4 mA High Level Output Current IOH 5.5 mA Iridium Communications Inc.Information Contained in this Guide 9602 SBD Transceiver Product Developers Guide is Subject to Change Without Notice V0.1 Iridium Communications Inc.Distribution of Guide Restricted Proprietary&Confidential Information 19 to Product Developers Only Figure 5 provides a reference for the pin designation.Note that this designation is when looking into the User connector towards the 9602 module.It is not to scale and not representative of the connector mechanical layout.Figure 5 User Connector Pin Number Designation(from below module)Notes:1.View looking into connector towards 9602 module 2.Numbers indicate pin designations 3.Not to scale,for illustrative purposes only 4.On the 9602 PCB,pin 1 of the User connector is indicated on the board silkscreen Iridium Communications Inc.Information Contained in this Guide 9602 SBD Transceiver Product Developers Guide is Subject to Change Without Notice V0.1 Iridium Communications Inc.Distribution of Guide Restricted Proprietary&Confidential Information 20 to Product Developers Only 3.2 DC Power Interface The DC power interface is comprised of the DC power inputs and a control signals as summarized in Table 7.The+5V Inputs and 0V supply returns are used to supply DC power to the 9602 and ensure that enough current can be drawn across the connector without the 9602 malfunctioning during transmit due to lack of current supply.Note that all power and ground pins should be connected externally.The DC power supply requirements for the 9602 are summarized in Table 8 below.Note that these requirements apply to DC power measured at the 9602 User connector input and not at the output of the power supply.Long power supply cables can cause a voltage drop sufficient to cause the voltage to be out of specification at the physical power supply input to the 9602.Table 8:DC Power Input Specifications Parameter Value Supply Input Voltage Range 5.0V DC+/-0.5V Supply Input Voltage Ripple 40 mV pp Typical Power Consumption at+5.0 VDC Value Idle Current(average*)45mA Idle Current(peak)195mA Transmit Current(peak)1.5 A Transmit Current(average*)190mA Receive Current(peak)195mA Receive Current(average*)45mA SBD message transfer -average current*190 mA SBD message transfer -average power*=1.0 W *Note:The average power consumption will vary depending on the view of the satellite constellation from the antenna.The external power supply needs to guarantee the following:The supply voltage droop over for a 8.3ms burst of 1.5A current should not be more than 0.2 Volts.The power supply should limit the in-rush current to 4 Amps maximum The supply noise should be less than the limits in the following profile:100 mVpp from 0 to 50 kHz 5 mVpp at 1 MHz measured in 50 kHz bandwidth 10 mVpp at 1 MHz measured in 1MHz bandwidth 5 mVpp above 5 MHz measured in 1 MHz bandwidth.3.2.4 Power On/Off Control An external on/off input is provided on a pin of the User connector.The 9602 starts up when power is applied and the power on/off input is high.As long as the input voltage is applied,logic high on this line turns the transceiver on and a logic low turns it off.If this line is not required then it must be connected directly to the+5 V supply.Note that this on/off control is similar to the 9601 product but is not the same as the 9522,9522A or 9522B products.Iridium Communications Inc.Information Contained in this Guide 9602 SBD Transceiver Product Developers Guide is Subject to Change Without Notice V0.1 Iridium Communications Inc.Distribution of Guide Restricted Proprietary&Confidential Information 21 to Product Developers Only When a transceiver has been turned off,Product Developers should not reapply power on a unit until more than 2 seconds has elapsed after power has reached 0V.Additionally,if a unit does not respond to AT commands,power off the module,wait for 2 seconds and then power it back on.3.2.5 Typical Power Usage Profile This section is designed to give the Product Developer some insight to the electrical power profile that the 9602 uses.It does not describe every situation and permutation possible.It should be used as a starting point for the Product Developer to continue its own development design.The actual usage profile can vary for a number of reasons:1)View of the sky if in poor visibility of the sky where a clear line of sight is not available between the transceiver and the satellite.2)The higher the antenna VSWR the higher the current consumed 3)How often the 9602 module is activated/deactivated by the Host Controller system 4)Manufacturing variation from transceiver to transceiver.The host system designer should ensure their design covers for worst case power consumption scenarios.Figure 6 provides a graphical representation of the typical supply current profile of a 9602 SBD Transceiver sending and receiving SBD messages.Figure 6 Typical Supply Current Profile 00.10.20.30.40.70.60.50.80.91.01.11.21.31.41.51.6-100102030405060Supply Current(A)Time(mS)70Transmitter data burst(Typically 1.5A)Background(Typically 40mA)Receiver data burst(Typically 195mA)Iridium Communications Inc.Information Contained in this Guide 9602 SBD Transceiver Product Developers Guide is Subject to Change Without Notice V0.1 Iridium Communications Inc.Distribution of Guide Restricted Proprietary&Confidential Information 22 to Product Developers Only 3.3 Serial Data Interface The Serial data interface is used to both command the 9602 and transfer user data to and from the Transceiver.The 9602 presents a 9-wire data port to the FA(Field Application),where the interface is at 3.3V digital signal levels.With respect to this interface,the 9602 behaves as a DCE(Data Communication Equipment),and the FA behaves as a DTE(Data Terminal Equipment).The terms“FA”and“DTE”are used interchangeably throughout this document;similarly for the terms“9602”and“DCE”.Autobaud is not supported in 9602 SBD Transceiver.The baud rate can be set via the AT+IPR command.The default rate is 19200 bps.3.3.4 9-Wire and 3-Wire Operation By default,the serial interface operates as a 9-wire connection.Table 9 describes each of the signals,where“input”means an input to the 9602,and“output”means an output from the 9602 SBD Transceiver.Table 9 Serial Interface Signals Signal Description RX Active high data output The DTE receives the data from the 9602 TX Active high data input Data is transmitted from the DTE to the 9602 GND 0V RTS Active low flow control input CTS Active low flow control output RTS and CTS are used together to implement hardware flow control when enabled with AT&K3 DTR Active low handshaking input AT&Dn controls how the 9602 uses DTR:If set to AT&D0,DTR is always ignored.Otherwise DTR set to OFF places the data port into UART test mode after 10 seconds,or immediately on boot-up.A subsequent transition of DTR to ON returns the data port to DCE mode and resets it to its power-on state.The UART test mode is provided for factory testing of the data port UART.An FA should never activate test mode;if it does,the 9602 will stop responding to AT commands until the data port is returned to DCE mode.DSR Active low handshaking output The 9602 drives DSR ON when the data port is in DCE mode,and OFF when the data port is in test mode.The DTE may use this signal as an indication that the 9602 is powered up and ready to receive AT commands.RI Active low ring indicator output The 9602 drives RI ON when it receives a Automatic Notification from the network that a Mobile Terminated SBD Message is queued at the Gateway,and drives RI OFF after 5 seconds or when the DTE initiates an SBD session,whichever occurs first.DCD Active low handshaking output DCD is driven OFF at all times.Note that the Ring Indicator(RI)pin is used by the 9602 SBD Transceiver to indicate that a Mobile Terminated SBD(MT-SBD)message is queued at the Gateway.The Field Application can monitor this pin and use appropriate AT Commands to command the Transceiver to retrieve the MT-SBD message.Iridium Communications Inc.Information Contained in this Guide 9602 SBD Transceiver Product Developers Guide is Subject to Change Without Notice V0.1 Iridium Communications Inc.Distribution of Guide Restricted Proprietary&Confidential Information 23 to Product Developers Only The serial interface may be operated with a 3-wire connection,where only transmit,receive and ground signals are used.However the 9 wire interface offers better control and is the recommended implementation.Iridium is only able to provide limited 3-wire interface support.When operating with a 3-wire connection,the following rules apply:AT&Dn must be set to AT&D0 to ignore the DTR input AT&Kn must be set to AT&K0 to disable RTS/CTS flow control The other output signals may be connected,and operate as follows:CTS driven ON(low)DSR operates as normal RI operates as normal DCD driven ON(low)Note:RTS/CTS flow control,when enabled,is only used when the data port is in SBD data mode.In AT command mode,RTS is ignored and CTS is driven ON(low).3.3.5 Configuration Settings The 9602 allows the DTE to configure the data port communication parameters.The three configuration types are active,factory default,and stored.The active configuration is the set of parameters currently in use.They can be changed by the DTE individually via specific AT commands.The factory default configuration is stored in permanent memory.This configuration can be recalled at any time through use of the AT&Fn command.Two groups of settings,or“profiles”,can be stored as user-defined configurations.The DTE first creates desired active configurations and then writes them to memory using the AT&Wn command.These profiles can be designated to be loaded as the active configuration upon 9602 power-up through use of the AT&Yn command.The 9602 can be reset without loss of power to these profiles through use of the ATZn command.The configuration settings are stored in“S-register”locations and are detailed further in section 6.Iridium Communications Inc.Information Contained in this Guide 9602 SBD Transceiver Product Developers Guide is Subject to Change Without Notice V0.1 Iridium Communications Inc.Distribution of Guide Restricted Proprietary&Confidential Information 24 to Product Developers Only 3.3.6 Modes of Operation The serial interface is always in one of three modes:command mode,SBD data mode or SBD session mode.When the data port is in command mode,AT commands can be entered to control the 9602.In command mode,flow control has no effect,with the RTS input ignored and the CTS output driven ON(low).When in SBD data mode,the 9602 is transferring binary or text SBD message data to or from the DTE.In SBD data mode:All characters from the DTE not forming part of the message data are ignored(i.e.no AT commands may be entered)No unsolicited result codes are issued.RTS/CTS flow control,if enabled,is active.When RTS is OFF(high),the 9602 suspends transfer of data to the DTE;when CTS is OFF(high),the 9602 expects the DTE to suspend transfer of data to the 9602.When in SBD session mode,the 9602 is attempting to conduct an SBD session with the network.In SBD session mode:The DTE must wait for the+SBDI session result code.All characters from the DTE are ignored.Unsolicited result codes are issued where those codes have been enabled.Transitions between the modes of operation are performed automatically by the 9602 in response to the SBD AT Commands;the DTE has no other control over the mode.3.3.7 Serial port signal levels 3.3.7.1 Data Port Inputs The inputs on the 9602 serial port(RTS,DTR and TXD)will operate correctly at 3.3V digital signal levels.RS-232 interface chips can be fitted to the host system motherboard if connection to an external RS232 link is required.Note that these may invert the digital logic level,so another inversion may be required.3.3.7.2 Data Port Outputs The five outputs from the 9602 serial port(DCD,DSR,CTS,RI and RXD)are all at 3.3V digital levels.3.4 Hardware Failure Reporting If the 9602 detects a hardware problem during initialisation,the 9602 may be unable to function correctly.The 9602 notifies the DTE of this situation by issuing an unsolicited result code at the end of initialisation:HARDWARE FAILURE:,where identifies the software subsystem that detected the error,and is the subsystem-specific error code.Any AT commands that cannot be handled in the failure condition will terminate with result code 4(“ERROR”).Iridium Communications Inc.Information Contained in this Guide 9602 SBD Transceiver Product Developers Guide is Subject to Change Without Notice V0.1 Iridium Communications Inc.Distribution of Guide Restricted Proprietary&Confidential Information 25 to Product Developers Only 3.5 Network Available Output This is a digital output that can be used by an application to know when the Transceiver has visibility to the satellite network.This is useful in applications where the Transceiver may move around terrain that reduces the amount of time that clear line of sight to the satellite constellation is available.The Product Developer can use this output to preserve battery life by reducing the number of attempted transmissions by including this logic output in the application decision logic.Network Available means only that the 9602 can successfully receive the Ring Channel,or,put more simply,it can see an Iridium satellite.Network Available is not a guarantee that a message can be successfully sent.The Network Available state is evaluated every time the Ring Channel is received or missed.If the Ring Channel is visible,then that is typically every 4 seconds.If the Ring Channel is not currently visible,then the update period can be as long as 2 minutes,depending on how long the lack of satellite visibility existed.This is because the 9602 attempts to conserve power by increasing the ring search interval while the satellites are not visible.Every time a ring search f