Technics MT5634SMI-92 manual SCR Scratch, DLL Divisor Latch LSByte, DLM Divisor Latch MSByte

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Chapter 4 – SocketModem Parallel Interface – A Programmer’s Description

SCR Scratch

The host programmer uses this register for temporary data storage.

DLL Divisor Latch (LSByte)

This register contains low-order byte for the 16-bit clock divider. It is kept to maintain register set compatibility with the 16C550A interface. However, it is not used for clock generation since MMM does not require the generation of a real baud clock.

DLM Divisor Latch (MSByte)

This register contains high-order byte for the 16-bit clock divider. It is kept to maintain register set compatibility with the 16C550A interface. However, it is not used for clock generation, since MMM does not require the generation of a real baud clock.

Programming the Baud Rate Generator Registers DLM (MSB) and DLL (LSB) provides a user capability for selecting the desired final baud rate. The example in the Table below, shows the selectable baud rates available when using a 1.8432 MHz external clock input.

BAUD RATE GENERATOR PROGRAMMING TABLE

Baud Rate	16 x Clock Divisor (Decimal)	DLM Value (HEX)	DLL Value (HEX)
110	1047	04	17
300	384	01	80
600	192	00	C0
1200	96	00	60
2400	48	00	30
4800	24	00	18
9600	12	00	0C
19.2K	6	00	06
38.4K	3	00	03
57.6K	2	00	02
115.2K	1	00	01

SocketModem Global MT5634SMI Developer’s Guide

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Contents MT5634SMI-34 MT5634SMI-92 Revisions Table of Contents Multi-Tech’s Flash Programming Protocol Appendix C Country Configuration and Result Codes Index Introduction Product Description SpecificationsProduct Description Features Matrix MT5634SMITechnical Specifications and Features TIA/EIA TR29.2MT5634SMI-IT-92 Industrial Temperature 3.3V Build Option StandardMechanical Specifications Physical Dimensions All ModelsPin # Signal Name I/O Type Description Pin ConfigurationsDigital Ground Active High DCD status Tip Signal from TelcoRing Signal from Telco Active High RDX statusINT Pin # Signal Description NameDgnd GND VCC PWRElectrical Characteristics Electrical CharacteristicsTiming Requirements for Parallel Write Handling PrecautionsTiming Requirements Timing Requirements for Parallel ReadSocketModem Parallel Interface Internal Registers SocketModem Parallel Interface a Programmer’s DescriptionSocketModem Mimic MMM Operation Register Name Register Description Host Access Internal Registers Time Out InterruptsRegister Functional Descriptions Special Register Set Note *2RBR Receive Buffer RX Fifo IER Interrupt EnableBit Priority Interrupt Source Interrupt Reset Control THR Transmit Holding Register TX FifoLCR Line Control FCR Fifo ControlMCR Modem Control LSR Line Status MSR Modem StatusDLM Divisor Latch MSByte SCR ScratchDLL Divisor Latch LSByte Baud Rate Clock Divisor Decimal DLM Value HEX DLL Value HEXAT Commands, S-Registers Result Codes AT Command SummaryModulation Handshake Set Register ValueDial string modifiers AT CommandsEnter Key DS= y Dial Stored Telephone NumberReturn Online to Data Mode Sr= n Set Register Value Sr?XON/XOFF Pacing Control \An Select Maximum MNP Block Size Zy=x Store Dialing Command\Bn Transmit Break \Kn Break Control \Nn Error Correction Mode Selection\Tn Inactivity Timer Data mode. The modem receives the break from the computerDCn AT Command Control \Xn XON/XOFF Pass-Through$EBn Asynchronous Word Length $RPn Ring Priority vs. AT Command Priority$Dn DTR Dialing $MBn Online BPS Speed#CBIn Local Callback Inactivity Timer #CBDn Callback DelayCallback Failed Attempts Reset #CBNy=x Store Callback PasswordEscape AT Commands Subparameters Commands+MS= Modulation Selection Modulation Possible rates bps1Mod value Valid maxrate values bps +PCW=n Call Waiting Enable+PMH=n Modem on Hold Enable +PIG=n PCM Upstream Ignore+PMHF V.92 Modem Hook Flash +PMHT=n Modem on Hold Timer+PMHR=n Modem on Hold Initiate +PQC=n Quick Connect Control +VCID=n Caller ID Selection#Sx Enter Setup Password #S=x Store Setup PasswordRegister Unit Range Default Description RegistersS38 S48=7 S48=128Result Codes Terse Verbose Description111 Voice Commands Commands That Change for Voice Mode Support Voice CommandsVoice S-Register Summary Command Description Voice +V Commands SummaryVoice +V Commands Detail +FCLASS= mode Enter Select Modem Operating ModeAT+FCLASS=? Enter Display Service Class Capabilities Touch Tone Signals Digit Low frequency High frequency+FCLASS=8 Dtmf Detect Detect and Control Dtmf +FMM?Enter Report Product ID +VNH=hookEnter Automatic Hang-Up Control+FMI?Enter Report Manufacturers ID +FMR?Enter Report Version Level+VTS=string Produce Dtmf and Tone Generation in Voice Mode Enter Voice Receive StateStart Voice Transmission Process +VTS=? Report Frequency SupportAT+VTS=? +VGR=gain Set the Gain for Received Voice Samples+VLS=label Select Analog Source/Destination +VGT=level Set the Volume for Transmitted Voice Samples+VIT=timer Set DTE/DCE Inactivity Timer Code Description+VRA=interval Set Ring Back Goes Away Timer +VSD=sds,sdi Set Silence Detection Sensitivity +VRN=interval Set Ring Back Never Appeared Timer+VSM=cml,vsr,scs,sel Select Voice Compression Method AT+VSM=? +VSM=? Report Voice Compression MethodIdentifier Description +VDT=enable,report Control Tone Cadence Reporting Enable Report DescriptionLsltcq +VEM=mask Event Reporting and Masking +VEM=? Report Event Reporting and Masking Capabilities+VBT=? Report Modem Flow Control Assert and Deassert Points Interface Configuration Commands+VPP=enable Enable or Disable Voice Mode Packet Protocol AT+VBT=?Flow Control Voice Mode Result Codes+VPR=rate Select DTE/DCE Interface Rate Turn Off Autobaud Valid Complex Event Report Tags Unsolicited Voice Mode Result CodesTag Description Voice Mode Shielded Codes Shielded Code Hex Event Report DescriptionAscii Sample Sessions Command ResponseSample Rate Selection and Suggested Compression Method DLE ETX AT+VLS=4AT+VTX AT+VLS=0DLE NUL AT+VLS=2AT+VRX AT+VNH=1Related Manuals DTE/DCE Interface RatesAdditional Information Fax Commands Basic Procedure Remote Configuration Country Code ConfigurationRemote Configuration SetupUsing AT Commands Country Code ConfigurationUsing the Global Wizard Utility Country AT Command Result Code Hexadecimal DecimalUpgrade Overview Firmware Upgrade ProcedureUpgrade Steps Extract the Firmware Upgrade .Hex Files Download the Upgrade FileInstall the Flash Wizard Identify the Current Version of the FirmwareUsing the Flash Wizard Upgrade the Modem’s FirmwareRestore Your Parameters Modem Comments Multi-Tech Systems, Inc. Flash Programming ProtocolProgramming the Modem Handshake SequenceOther Programming Concerns Other Supported Boot Code CommandsATI4 Example Extended Address Record in Intel Format Intel Hex FormatData Record Char Pos Field Type Value Description End of File Record Char Pos Field Type Value DescriptionExample End of File in Intel Format Appendix a Mechanical Details Serial Test/Demo Board ComponentsSerial Test/Demo Board Block Diagram 5V / 3.3V Jumper JP1Address/COM Port/ IRQ Select Jumpers JP2 and JP3 Parallel Test/Demo Board ComponentsOperating Voltage Select Jumper JP4 Parallel Test/Demo Board Block Diagram Figure A-4. Parallel Test/Demo Board Block DiagramSafety and EMC Approvals Telecom ApprovalsRegulatory Design Considerations Hardware ConsiderationsSafety 5V Tolerant Inputs for 3.3V Modules FCC Part 15 Regulation Industry CanadaFCC Part 68 Telecom Telecom Labeling RequirementsFrom FCC Part 68 Subpart D Conditions for Registration ReregistrationFax Branding Statement Canadian Limitations NoticeInternational Modem Restrictions EMC, Safety, and R&TTE Directive ComplianceIndustry Canada CS-03 Multiple ListingNew Zealand Telecom Warning Notice South African NoticeAppendix C Country Configuration Result Codes Country Country Config. hex ATI9 ResponseAppendix C Country Configuration and Result Codes Appendix C Country Configuration and Result Codes Appendix C Country Configuration and Result Codes Page Index Index Index Index