Manuals / Multi-Tech Systems / Computer Equipment / Modem

Multi-Tech Systems MT5600SMI-L92, MT5600SMI-XL34 manual 5V Tolerant Inputs for 3.3V Modules, 123

Models: MT5600SMI-L32 MT5600SMI-92 MT5600SMI-P34 MT5600SMI-XL34 MT5600SMI-L92 MT5600SMI-34 MT5600SMI-XL92 MT5600SMI-PL34 MT5600SMI-L34 MT5600SMI-32 MT5600SMI-P92 MT5600SMI-P32 MT5600SMI-PL92

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Appendix B – Product Approvals, Regulatory Design Considerations, and Regulatory Compliance

5V Tolerant Inputs for 3.3V Modules

In order to drive the inputs of 3.3V modules from 5V logic, it is recommended to add a 1K series resistor to each of the inputs: TXD, RTS, DTR, and RESET.

Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide

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Multi-Tech Systems MT5600SMI-L92, MT5600SMI-XL34, MT5600SMI-P92, MT5600SMI-PL92 5V Tolerant Inputs for 3.3V Modules, 123

Contents

Developer’s Guide Embedded Modem MT5600SMI Family SocketModem Developers Guide Contents 114 Introduction Product DescriptionProduct Description Region Developers Kit Features Sources of Additional Information Technical Specifications Maximum Component Height Physical Dimensions Pin Descriptions for Serial SocketModem Devices Serial Pin ConfigurationsAvailable with or without LED Pins Pin Signal Description Name Type RXD 3V DC Power Parallel Pin Configurations Speaker, Call Monitor Agnd GND Electrical Characteristics Handling Precautions Absolute Maximum Ratings Operating Conditions Current and Power Requirements Symbol Parameter Min Max Units Parallel Host Bus TimingParallel Host Bus Timing Table Parallel Host Bus Read Parallel Host Bus Write Overview SocketModem Parallel Interface Register BIT No Name Parallel Interface Registers IER Interrupt Enable Register Addr = 1, Dlab = Register Signal Definitions FCR7 FCR6 FCR Fifo Control Register Addr = 2, Write Only Bit Interrupt Pending IIR Interrupt Identifier Register Addr = LCR Line Control Register Addr = Bit 7 Divisor Latch Access Bit Dlab Bit Data Terminal Ready DTR MCR Modem Control Register Addr = LSR Line Status Register Addr = Bit 7 RX Fifo Error Divisor Registers Addr = 0 and 1, Dlab = MSR Modem Status Register Addr =RBX RX Buffer Receiver Buffer Register Addr = 0, Dlab = THR TX Buffer Transmitter Holding Register Addr = 0, Dlab = Programmable Baud Rates SCR Scratch Register Addr = Receiver Data Available Interrupt Receiver Character Timeout InterruptsReceiver Fifo Interrupt Operation Transmitter Fifo Interrupt Operation AT Commands, S Registers, and Result Codes Generic Modem Control Commands Data Commands Request Manufacturer Identification Command Operating Mode Error CorrectionCommand Identification Command Request Revision Identification Country of InstallationCommand Restore Factory Configuration Profile Request Model Identification Command &Zn=x Store Telephone Number Command Local Analog Loopback TestCommand Designate a Default Reset Profile Command Store Current Configuration Command Plug and Play Vendor ID and Product Number Command Load Flash MemoryProcedure Message Description Upload Messages Command Result Code Form DTE-Modem Interface CommandsCommand E Command Echo Command Q Quiet Result Code Control Command Extended Result Codes Command Rlsd DCD Option Command DTR OptionCommand Flow Control +IPR? Command &R RTS/CTS OptionCommand &S DSR Override Command +IPR Fixed DTE Rate Command +ILRR DTE-Modem Local Rate Reporting Command +IFC DTE-Modem Local Flow Control Call Control Commands Command D DialDial Modifiers Command P Set Pulse Dial Default Command T Set Tone Dial Default Command Answer Command Disconnect Hang-UpCommand Return to Online Data Mode Command Select Pulse Dial Make/Break Ratio Command Speaker VolumeCommand Speaker Control Command Select Guard Tone Telephone Numbers AT&VActive Profile Stored Profile Command &V1 Display Last Connection Statistics Termination Reason Local RequestProtocol Lapm Compression Command Single Line Connect Message Enable Command Report Line Signal LevelCommand Report Line Signal Quality Command -STE= Set Telephony Extension Behavior in Data Mode +FCLASS=0Behavior in Voice Mode +FCLASS=8 Connect ExamplesAT-STE=7 LINE-IN-USE AT+VTX Dlep AT-STE=3No Dial Tone AT+FCLASS=8 +MS Command Supported Rates Command +MS Modulation SelectionPage Modulation Reporting Control +MR Command Ccitt or Bell Command Select µ-Law or A-Law Codec Type Origfbk Error Control CommandsCommand +ES Error Control and Synchronous Mode Selection Origrqst Command +EB Break Handling in Error Control Operation Command +ESR Selective RepeatCommand +EFCS Bit Frame Check Sequence Error Control Reporting Command +ER type Report the Current Error ControlCall Termination Buffer Management Command Break Control Command Transmit Break to Remote Command -K MNP Extended Services Data Compression Commands Command +DS Data CompressionCommand +DS44 Compression Select Command +DR Data Compression Reporting Command %C Enable/Disable Data Compression Command +A8E V.8bis Operation Controls V.8bis Commands YYY Command +A8I CI Signal Indication Data Call State Model Diagnostic CommandsCommand #UD Last Call Status Report Command Syntax Digits Monitoring an Active ConnectionCallCleared codes from 3.6.4/V.58-1994 AT#UD Last Call Status Report Format Key Values Definition V.34 Info bit report Bits Source bits Definition Call Setup Result Codes Code DefinitionMultimedia Modes Code Definition DTE-DCE modes Code Definition 11. compressionActive from 3.2.2/V.58 Value Description 10. errorControl Active from 3.5.2/V.58 Value Description Example Modem Response and Usage Command Initial Cellular Power Level Setting Compatibility CommandsCommand Leased Line Operation Command Enable Cellular Power Level Adjustment Command +PCW Call Waiting Enable FastConnect Commands92 +P and -Q Commands Command $F FastConnect Control Initiate Modem-on-Hold Modem-on-Hold Timer Phase 1 and Phase 2 Control PCM Upstream IgnoreModem-on-Hold Hook Flash Force Full Startup Procedure on Next Connection Enable Quick Connect Profile SaveUse Short Sequence Wait Time for Carrier, Silence, or Dial Tone Registers Reserved Test Mode Bit-Mapped Options Status Indicates the testCarrier Detect Response Time Supported for backward General Bit-Mapped Options Status Indicates the status Register Unit Range Default Description S21 Register Unit Range Default Description S27 Flow Control Bit-Mapped Options Status Register Unit Range Default Description S36 General Bit-Mapped Options Status. Indicates the status Register Unit Range Default Description S41 Pstn Transmit Attenuation Level. In non-PCM modes V.90 or Register Unit Range Default Description S86 Register Unit Range Default Description S210 Short Form Long Form Result Codes +ER L APM 196 +MRR 197 198 199 200 201 202 203 204 205 206 207 208 209 Characters Detected Action Taken Fax I/O ProcessingDTE-to-Modem Transmit Data Stream Modem-to-DTE Receive Data Stream Fax Control Transmission Fax Mode SelectionFax Origination Fax Answering Fax Control Reception Fax Data Reception Fax Data Transmission Commands and Parameters Mode Entry CommandsMode Commands Mod Modulation Training Modulation Mode and Rate Transmit FacsimileFax Class 1 and Fax Class 1.0 Modulation Modes and Rates Command FTH Transmit Data with Hdlc Framing Command +FRM Receive Facsimile Command +FRH Receive Data with Hdlc Framing Service Class 1 Commands Command +FAR Adaptive Reception ControlCommand +FCL Carrier Loss Timeout DTE Inactivity Timeout Double Escape Character Replacement Command +FMR? Request Revision Identification Command +FPR Fixed DTE RateCommand +FMI? Request Manufacturer Identification Command +FMM? Request Model Identification Command +FLO Flow Control Fax Class 1 Calling Sequence Transmitting a Single Examples Fax Class 1 Answering Sequence Receiving a Single Voice Commands Overview Voice Commands Function ConfigurationVoice DLE Shielded Event Codes Sent to the DTE DLE Shielded Codes Sent to the Modem DCE Can102 +VNH Command Behavior Command Response Voice Configuration CommandsCommand +FCLASS=8 Select Voice Mode Command +VNH Automatic Hang-up Control Command +VTS Send Voice Tones Basic Voice CommandsCommand +VIP Voice Initialize All Parameters Command +VRX Start Modem Receive Record 105 Command +VTX Start Modem Transmit PlaybackCommand +VGR Voice Gain Receive Record Gain Example Command +VGT Voice Gain Transmit Playback Volume Command +VIT Voice Inactivity Timer DTE/Modem106 +VSP=1 Command +VLS Analog Source/Destination Selection+VLS Command Options Label Primitives Description 108 S1T Events Detectable in the Voice Mode per Event Number Event Description Event Reporting109 110 Command +VRA Ringback Goes Away TimerCommand +VRN Ringback Never Appeared Timer Command +VSD Silence Detection Quiet and Silence 111 Command +VSM Compression Method Selection Command +VTD Beep Tone Duration Timer Command +VDR Distinctive Ring112 113 Command +VDT Control Tone Cadence Reporting 114 Country Country Code 115 Test/Demo Board Components 116 Serial Test/Demo Board Block DiagramSerial Test/Demo Board Block Diagram 5V / 3.3V Jumper JP6 Parallel Test/Demo Board Block Diagram Parallel Test/Demo Board Block Diagram117 EMC Approvals Approvals Product Safety and EMCSafety Certifications Telecom Certifications Regulatory Design Considerations Hardware Considerations119 120 EMC Other Design Considerations PC Board Layout Guidelines121 Safety Electromagnetic Interference EMI Considerations122 123 5V Tolerant Inputs for 3.3V Modules Regulatory Compliance Regulatory Requirements for the United States124 125 MT5600SMI 126 Current Label Content and Format as of August 127 Regulatory Requirements for Canada 128 IC XXXXXX-ZZZZZZZZ Where New Zealand Telecom Warning Notice South African Statement129 EMC, Safety, and R&TTE Directive Compliance International Modem Restrictions130 131 Index 132 Enable quick connect profile save command -QCPS 133 Serial Test/Demo Board Components 134