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Silicon Laboratories SI2493/57/34/15/04, SI2494/39 manual Transmit Gain Configuration

Models: SI2493/57/34/15/04 SI2494/39

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AN93

Figure 33. Transmit Gain Configuration

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Silicon Laboratories SI2493/57/34/15/04, SI2494/39 manual Transmit Gain Configuration

Contents

Functional Block Diagram IntroductionAN93 Table of Contents AN93 AN93 AN93 AN93 Document Change List Contact Information Protocols Selection GuideModulations Protocol Function Si2494/93 Si2457 Si2439/34 Si2415 Si2404Release Carriers and TonesISOmodem Capabilities Part Numbers PackageReset Sequence Resetting the DeviceModem System-Side Device Reset Strapping General Considerations Mode Reset-Strap Pins Interface Input Clock Pin 5, RXD/MISO SOIC-16 Reset-Strap OptionsReset-Strap Options for 16-Pin Soic Package Reset-Strap Options for 24-Pin Tssop PackageTSSOP-24 UART-Interface Options TSSOP-24 Parallel-Interface OptionsReset Strapping Options for QFN Parts with Uart Operation TSSOP-24 SPI-Interface Clock-Frequency OptionsReset Strapping Options for QFN parts with SPI Operation Input ClkPin Functions vs. Interface Mode TSSOP-24 Pin Functions vs. Interface Mode SOIC-16System Interface Pin Functions vs. Interface Mode QFN-38 SPI-Interface Signals UART-Interface SignalsParallel-Interface Signals Ideal DTE Rate bps Actual DTE Rate bps Approximate Error% DTE RatesSymbol Data bits Parity Stop bits Serial Formats Detected in Autobaud ModeFlow Control PPD Can MonitorU70 Bit Function OCDUart Serial Interface Parallel and SPI Interface OperationTX Fifo Hardware Interface Register Bit Map Hardware Interface RegisterSignal Function Direction Parallel Interface SignalsParallel Interface Operation Parallel Interface Read Timing SPI Interface Operation Bit Function Meaning when High Meaning when LowSPI Control-and-Address Bit Definitions Interface Communication ModesWake-on-Ring Mode Low-Power ModesPower-Down Mode Sleep ModeClkout Fsync SDI SDO Reset SSI/Voice Mode 24-Pin Tssop and 38-Pin QFN OnlySignal Pin Number TSSOP-24 QFN-38 SSI Interface Pin ConnectionEeprom Status Register Any Other Bits are Unused Eeprom CommandsEeprom Interface 24-Pin Tssop and 38-Pin QFN Only Eeprom TimingEOZ Parameter Symbol Min Typ Max UnitEcsh Eecs Detailed Eeprom Examples Three-Wire SPI Interface to EepromBoot Commands Custom Defaults EepromFirmware Upgrades AT Command Macros Customized AT CommandsBoot Command Example AT Command Macro Example Autoloading Firmware Upgrade ExampleCombination Example Command FunctionCombination Example Ascii Chart Dec Hex DisplayHookswitch and DC Termination DAA Line-Side DeviceRinger Impedance and Threshold AC Termination Settings for the Si3018 Line-Side DeviceAC Termination Pulse Dialing and Spark QuenchingTypical Loop Voltage LVS Transfer Function Loop Current Transfer Function Ilim =LVCS40 Condition Legacy-Mode Line Voltage and Loop Current Measurement Billing Tone DetectionHardware Design Reference Power Supply and Bias CircuitryHookswitch and DC Termination Component FunctionsRinger Network Optional Billing-Tone FilterSymbol Value TIP From Line Ring DAAEMI/EMC Schematic Si3018/10 SchematicBill of Materials Component Value SuppliersLayout Guidelines Reference Placement ISOmodem Layout Check List Layout ChecklistLayout Items Required AN93 Module Design Module Design and Application ConsiderationsMotherboard Design Modem Module VCC and Reset Filter Analog OutputAudio Filter Response Audio QualityModem Reference Guide ControllerCommand Action AT Command SetConfiguration Status DSPCommand Result Comment Command ExamplesMultiple AT Commands on a Single Line Command ResultBasic AT Command Set Consecutive U-Register Writes on a Single LineModifier EnableNo Patch AT Command Chip Revision ATI0 ATI1Revision C Patch rcpXYYYY AT Command Chip RevisionRevision B Patch rbpXYYYY ATI0Enable result codes See Table Speaker is always offCommand Action Verbal result codes Program RAM write this command is used to upload firmware +DRNONE Disabled+DR=X +DRV42B RDSpecifies the mode of operation when answer a modem Specifies the mode of operation when initiating a modemConnection = Disable synchronous access mode C,DSpecifies action taken if an underrun condition occurs = CRC generation checking disable= Nrzi encoding and decoding disabled During transparent sub-modeClass 1 Transmit Carrier United States default CountryAutomatically detect the baud rate +GCI?Fixed DTE Rate BPSITU-T V.34 default for Si2434 V22B ITU-T V.22bis default for Si2404V32B ITU-T V.32bis default for Si2415 ITU-T V.90 default for Si2457+PMHT=X Enable Short Phase 1 and Short Phase+PMHR=X +PQC=X= Off DCEs decide to use short startup procedures= After ring only Distinctive RingDTE/DCE Inactivity Timer Command Action Transmit Gain SelectionLoad Voice Factory Defaults ISOmodem on-hook. Aout disabled. Tone detecOK result code. Default time is 0 seconds Ringing Tone Goes Away TimerRinging Tone Never Appeared Timer Is five secondsVoice Compression Method Speakerphone AEC, AES and LEC disabledDtmf / Tone Duration Timer Signed PCMKbps max default for Si2415 Extended AT CommandsExtended AT& Command Set Kbps max default for Si2457 transmit and Si2434Only 56 kbps to 28 kbps TIP + ISOmodem answers a call in answer mode Extended AT% Command SetEnable V.42bis in transmit and receive paths Disable automatic line-in-use detectionExtended AT\ Command Set Mode is not allowed with a parallel or SPI interface\P0 Even \Q2 Use CTS only\T16 Autobaud On4 \T9 Kbps4\V0 Report connect and protocol message Result Codes Numeric1 Meaning Verbal ResponseNo Polarity Reversal StasPolarity Reversal Protocol NoneALTERNATE, +CLASS UN-OBTAINABLE NumberDisconnect Codes Disconnect Code ReasonRegister Descriptions Definition Register Function Default Range Units DecimalRegisters AsciiAll spaces 0s 2400 Symbols/second Symbol Rate Allowable Data RatesRegister Address Name Description Default Hex DT4B1 U0FDT4A0 DT4B2U2F U2EBmtt BdltU4F U4EPrdd FHTSasf V9AGGSamco SC0Bit-Mapped U-Register Summary Register SummaryU0-U16 Dial Tone Registers Register Name Description Default2. U00-U16 Dial Tone Detect Filter Registers U17-U30 Busy Tone Detect Registers 3. U17-U30 Busy Tone Detect Filter Registers300/480 310/510 Default Busy and Dial ToneBPF Biquad Stage Output Scalar 320/630BPF Biquad Values 400/4404. U31-U33 Ringback Cadence Registers Ringback Cadence RegistersDial Tone Timing Register 5. U34-U35 Dial Tone Timing RegisterDtmf Dial Registers Pulse Dial Registers7. U46-U48 Dtmf Dial Registers 8. U49-U4C Ring Detect Registers Ring Detect Registers9. U4D Modem Control Register 1-MOD1 Register U4D Bit Map Loop Current Debounce Registers Pre-Dial Delay Timer RegisterFlash Hook Time Register Transmit Level RegisterU54 Bit Map U53 Bit MapU62 Bit Map U63 Bit Map U65 Bit MapPDL Line-Side Chip Power Down17. U67-U6A International Configuration Registers = Normal operationU66 Bit Map U67 Bit MapU68 Bit Map 18. U6C Line-Voltage Status Register U6A Bit MapU6C Bit Map 19. U6E-U7D Modem Control and Interface RegistersU6F Bit Map U6E Bit MapPtmr U70 Bit Map U71 IO1 Bit D15 D14 D13 D12 D11 D10 Name Type Reset settings = BitDisables PCM mode Enables PCM mode Function 155 Reserved Read returns zeroU76 Bit Map U77 Bit MapU78 Bit Map Monitor Mode ValuesU79 Bit Map = Normal Atdtw operation U7A Bit MapAdaptive Dialing Pin indicates valid ring signal Synchronous Mode= Normal asynchronous mode Given time= ATZ enabled = Disables No Loop Current Detect= Timed calibration disabled 20. U80 Transmit Delay for V.22 Fast ConnectMinimal Transparency Special Error Reporting Mode= Ignore unrecognized in-band commands Framed Sub-Mode StartupFirmware Upgrades Load Technique and Speed Table Patch, 115 kbaud Uart Lines Reset, thenEscape Methods MethodTh Bit Escape 1. +++ EscapeEscape Pin Escape Enabling Error Correction/Data Compression Error CorrectionWire Mode To Enable Use AT CommandsSynchronous Mode Overview Legacy Synchronous DCE Mode/V.80 Synchronous Access Mode15. V.80 Mode Epos Electronic Point of Sale ApplicationsSynchronous Access Mode Settings AT\N0Indicator pair Code Transparent Submode Command Hex Supported Transmit Direction Receive DirectionCRC EM In-Band Commands and Statuses Supported Transmit Direction Receive Direction Fast Connect SettingsCommand Code Transparent SubmodeATDT12345 Connect 1200 Protocol None 0x190x190x110x11 Programming Examples Modem Feature vs. Hardware, AT Command and Register SettingFunction/Feature AT Commands Registers Quick ReferenceDC Termination Country-Dependent SetupDC Termination Control Bits Reg Bit Val FunctionCountry Initialization Table Country ConfigurationCountry Initialization Table Country InitializationAT+GCI=16 AT+GCI=AAT+GCI=F AT+GCI=9CAT+GCI=31 AT+GCI=26AT+GCI=27 AT+GCI=6CAT+GCI=3D AT+GCI=3CAT+GCI=42 AT+GCI=57 AT+GCI=46AT+GCI=53 AT+GCI=58AT+GCI=61 AT+GCI=59AT+GCI=0 AT+GCI=9FAT+GCI=69 AT+GCI=7BAT+GCI=89 AT+GCI=7EAT+GCI=82 AT+GCI=87AT+GCI=B8 AT+GCI=A0AT+GCI=FE AT+GCI=A5AT+GCI=A6 UAEAT+GCI=B4 International Call Progress Registers Dial Registers Line Interface/Control RegistersBlacklisting AT Command FunctionSpecial Requirements for Serbia and Montenegro S42 BlacklistingCaller ID Caller ID ModesJapan Caller ID SMS CommandsSMS Support Protocol150 Character Description Hexadecimal Value Ascii Value Type II Caller ID/SAS DetectionMdmf Parameters JohndoeSAS Tone Frequency SAS Cadence for Supported CountriesAustralia Country Tone Frequency Hz Cadence seconds RegistersAruba AustriaCyprus Country Tone Frequency Hz Cadence seconds Registers ChinaCroatia Czech RepublicHonduras GreeceGuyana Hong Kong064 0.436 IsraelJapan JordanLao P.D.R KiribatiKorea Republic LithuaniaPapua New Guinea NigeriaOman ParaguaySt. Lucia Country Tone Frequency Hz Cadence seconds Registers RussiaSt.-Kitts-and-Nevis Saudi ArabiaTrinidad SwedenTajikistan TobagoLine Not Present/In Use Indication Method 1-Fixed Intrusion/Parallel Phone DetectionOn-Hook Condition Loop Voltage ActionLine Not Present/In Use Indication Method 2-Adaptive Off-Hook ConditionRegister Bits Name Function Intrusion DetectionATH1 Initiating Modem-On-Hold Possible Responses to Pmhr Command from Remote ModemModem-On-Hold Value DescriptionHdlc Bit Errors on a Noisy Line Receiving Modem-On-Hold RequestsDCE Bit ErrorsBeginning of Packet Bit Errors Data Meaning0D 0A 4E 4F 20 43 52 49 45 52 0D 0A Overcurrent Detection Overcurrent DetectionPulse/Tone Dial Decision Register Bit Value FunctionAutomatic Phone Line Configuration Possible +PMHT Settings Telephone Voting Mode12. V.92 Quick Connect AT+PQC Parameters AT+PSS ParametersHandset, TAM, and Speakerphone Operation Extended AT+ Command SetSoftware Reference After ring only Command Action Caller ID TypeCaller ID Enable Distinctive Ring Cadence ReportingCommand Action Analog Source / Destination Selection +VTS command. Default time is 1 second dur = Command Action Ringing Tone Never Appeared TimerSpeakerphone AEC, AES and LEC disabled. Handset FIR filter Compression Selection MethodCommand Action Dtmf and Tone Generation Transmit Voice StreamCode Hex Simple Action Command Description DLE Commands DTE-to-DCEDLE Commands DTE-to-DCE Format DLECodeCode Hex Description DLE Simple Events DCE-to-DTEDLE Events DCE-to-DTE Simple Event Reporting SUB180 Complex Event Reporting Voice Mode U Registers AddressDescription Default Format DLEXResponseDLE DescriptionVoice Mode U Registers Register Address Name Description DefaultHRXFIR3 HRXFIR1HRXFIR2 HRXFIR4STXFIR3 STXFIR1STXFIR2 STXFIR4SRXFIR3 SRXFIR1SRXFIR2 SRXFIR4U19E U199 Bit DefinitionsVoice Reference-Overview TAM, Handset, and Speakerphone Voice Paths Rev 189 Voice Mode Operations +FCLASS=8 +VTX +VRX +VSP +VTSDTR off &D2 Input Current Modem Settings Command orEvent +VNH = ATH or ATZ orSi3000 Configuration System Voice Modes TAM PstnInitialization Initialization SequenceRev 195 Handset Handset ConfigurationOverview AT+VLS=13 AT+VLS=0AT+VSP=0 Handset Manual Off-Hook Dial Handset Automatic Tone DialHandset Automatic Pulse Dial Terminate Handset to TAM Hands-Free TransitionAT+VLS=14 Speakerphone Transition Handset to Speakerphone TransitionAT+VSP=1 Local Ring Notification with Type I CID Event Telephone Answering MachineNAME=JONES Jennifer ATU199&FFFD TAM Hands-Free Record OGMRecord OGM AT+VRX ConnectRecord Local ICM TAM Hands-Free Review OGMReview OGM Review ICMTAM Handset Record OGM Trigger receive operation. The first byte TAM Handset Review OGM AT+VSM=4 TAM Pstn Normal Answer OGM Playback with ICM Record Normal Answer OGM Playback with ICM RecordAT+VLS=15 ICMInterrupted Answer OGM Playback with Dtmf Menu Entry DLE1 Dtmf 1 digit detected Speakerphone Simplex SpeakerphoneSimplex Speakerphone U Registers Register Name Description Default ValueTransmit Gain Calibration-Speakerphone Disabled External Microphone/Speaker CalibrationTransmit Gain Configuration Transmit/Receive Gain Calibration Dial Remote Telephone AT+FCLASS=8Receive Gain Configuration Receive Gain Reference MeasurementsSpeakerphone Calibration-AEC Gain Calibration Reg Name Bit U19EAEC Gain Calibration Dial Remote Telephone Speakerphone Configuration Speakerphone ConfigurationSimplex Speakerphone Configuration Speakerphone Manual Off-Hook Dial Simplex Speakerphone ConfigurationSpeakerphone Automatic Tone Dial Call-Automatic Tone DialSpeakerphone to Handset Transition Speakerphone Automatic Pulse DialCall-Automatic Pulse Dial References GlossaryTermination Security Protocols Implementing the SIA ProtocolConsiderations when Disconnecting the Session AT+F0AT+F3 AT+F1AT+F2 AT+F4Result Code Meaning Remarks Implementing the Ademco Contact ID Protocol Modem Specific Implementation Details Ademco Contact ID Protocol Tone Transmission AT CommandsDtmf Digit Low Tone Hz High Tone Hz Contact ID AT Command KissoffHandshake Tone Detection Ademco Mode of OperationStep DTE-to-Modem Command Modem-to-DTE Remarks Indication Event Modem-to-DTE indication RemarksWait for Receiver to answer with handshake tones Delay 250 ms before transmitting Data TonesMessage Wait for Kissoff tone ATHRev 233 Chinese ePOS SMS SMS Message FormatAT Command ISOmodem Response Description SMS AT Command SetAT Commands for SMS +FCLASS=256User Registers for SMS Operations Register Bits Name Description Default Hex= Auto Mode SMS User RegistersExample ProcedureCrlfconnect Crlf Connect 1CRLF ResponseDleetxcrlfno Carriercrlf Connect 2CRLFExample Session DleetxcrlfokcrlfPOS SMS Process in Host and Modem Testing and Diagnostics Prototype Bring-Up Si3018/10 Register Configurations  Inappropriate Commands Command Timing Host Interface TroubleshootingComponent Troubleshooting Isolation Capacitor Troubleshooting10.1.6. Si3018/10 Troubleshooting  Connect Evaluation Board to Prototype SystemTest the Host Interface EVBTest the Prototype Si3018/10 Circuitry Si3018/10 Typical Voltages Resistance to Si3018/10 Pin Si3018/10 ResistanceFB1 FB2 RV1 Resistance across ComponentsVoltages across Components with Diode Checker Component VoltageSelf Test Loop Test CircuitBoard Test Bell 103-V.34 Modem Functional Test ConnectionModem Under Test Teltone ILSIsdn Modem Test CoverageAT Commands for Compliance Testing Compliance TestingAT Command/Test Method Desired Response 29 Data Rate Symbol/Data RateS41 Symbol Rate Allowable Data Rates Transmit Modulation Data RateSafety SurgesAM-Band Interference Published Coilcraft TRF-RJ11 Filter PerformanceDebugging the DTE interface Debugging the DTE InterfaceAppendix A-EPOS Applications ModulationRecommendation 0xFF 0x19 0xA0 0x19 0xB1 ISOmodem in Epos Applications ISOmodem V.80 Protocol Hdlc Framing in Framed Sub-ModeAT&D2 Setup procedure29 FastPOS Sample Program AT+FCLASS=1How to use the program Example Program in C/C++Rev 263 264 Rev 265 True Rev 267 = Rtscontrolenable Rev 269 270 RTS not RTS signal FastPOS Detailed Wave FilesFastPOS DTE Trace Times When Audio Recording May Not Help When to Use Audio RecordingHardware Setup Setting PC Microphone Input for Recording Windows NT Larger of the two jacks 3.5 mm carries audio to the PCSetting PC Microphone Input for Recording Windows Sounds and Multimedia PropertiesSetting PC Microphone Input for Recording Windows XP Multimedia PropertiesSounds and Audio Devices Properties Making the Recording with Adobe Audition or WaveSurfer Sound RecorderAudio Playback and Analysis Adobe Audition Temporal View of a Good V.22 TransactionAdobe Audition Spectral View of a Good V.22 Transaction Band Spectral Display Audio-Recording Pitfalls Recording Made at Excessive LevelDetails of Some Low-Speed Protocols Appearance of Bell 212 ProtocolAppearance of V.22 bis Protocol Appearance of V.29 FastPOS Protocol Examples of Epos Server Misbehavior Example of Epos Server Misbehavior Examples of Line Impairments Dtmf Distorted by Low Line LevelPower Line Related Noise Appendix C-PARALLEL/SPI Interface Software Implementation MCU Software Description Hardware Access LayerInterrupt Service and Polling Layer  MCUhardware.c  modemhardware.cPolling HIR1 Method Interrupt Service Routine ISR MethodRXF Interrupt Receive Fifo Almost Full TXE Interrupt Transmit Fifo Almost Empty Timer Interrupt Receive Fifo Not EmptyU70 Interrupt Parallel- or SPI-Port Interrupt-Service Flowchart Buffer Management, Status and Control Layer Buffer ManagementCircular-Buffer Flowchart Application Layer Sample Application Status and ControlMaking a Connection Compiler Option Dot CommandsModem Operation Data BurstsModem Interrupt Service Sample Code Sfrpagesave = SfrpageRev 301 302 Revision 0.7 to Revision Revision 0.5 to RevisionRevision 0.6 to Revision Revision 0.8 to RevisionContact Information