Intel Confidential | Intel MD566X manual

56K V.92 Data, Fax, and Voice Chipset

Table 6-1. Voice Mode Command Descriptions (Continued)

Play Mode: This command causes the modem to start voice transmission (play- back mode) and play back a previously recorded voice message.

Upon receiving the AT+VTX command, the modem responds to the DTE with a “CONNECT” message at the current DTE-to-modem rate. It is important that the UART’s DTE-to-modem rate be equal to or higher than the compression- scheme-required UART data rate (for example, CL1 at 4800 samples/second re- quires 57,600 bps). If the DTE-to-modem data rate is lower than the compres- sion-scheme-required UART data rate, then data may be lost or the playback message may be garbled. After receiving the “CONNECT” message, the DTE then sends the voice file to the modem. To ensure that data is not overwritten, the modem provides both hardware or software flow control with AT+FLO=n. The modem also buffers the data to ensure steady voice delivery, even though the voice data may be transferred from the DTE in bursts.

Playing mode is terminated when the data is exhausted and the modem receives

+VTX none the two terminating characters <DLE><ETX> from the DTE. Upon detecting <DLE><ETX>, the modem issues an “OK” result code. After the modem’s internal buffer is empty, it returns to the command mode.

To abort playback mode immediately without waiting for the modem to empty its internal buffer, send <DLE><CAN><DLE><ETX>.The modem aborts playback mode immediately in two other situations: during a AT+VIT=n time-out or a DTR toggle. The modem immediately aborts playback mode if +VIT≠0 and the modem has not received any data or if the modem receives a <DLE><NUL> code before the +VIT timer time-out. The modem then hangs up the line and switches to data mode (+FCLASS=0). If the UART DTR signal is toggled from on-off-on, then the modem follows the &Dn setting. If configured for &D2 or &D3, then the modem immediately aborts playback mode, hangs up the line, and switches to data mode (+FCLASS=0).

Note: The voice sampling rate and sampling mode must be the same values used during record mode.

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Intel Confidential

Programmer’s Guide

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Intel MD566X manual Intel Confidential

Contents

MD566X Revision History Symbol Units of measure ConventionsProgrammer’s Guide Acronym Definition Dram Introduction Chipset Contents QtyIntel V.90/V.92 56K Chipsets V.92, V.90 and V.34 Data Modes Modem Connection Overview DCE-to-DCE Data Rates for Each Mode DTE-to-DCE Data Rates for Each ModeMode Data Rate bps Affected Data Data Mode Command Summary AT Command Summary TablesCommand Function Default Range Reported by Intel Confidential Data rate Result code type Yes Ports only Async mode +GMI? Intel Confidential V.44 / V.42 / V.42 bis MNP∗ Command Summary Command Function Default Range Reported By &Vn Intel Confidential Value saved in Nvram Fax Class 1 Command Summary Fax Identity Command SummaryIS-101 Voice Command Summary Voice DTE→DCE Character Pairs Response Hex Code Function Voice DTE←DCE Character Pairs Register Function Default Range Units Reported By &Vn Dial Modifiers Command FunctionS-Register Summary 10. V.90/V.92 Mode DCE-to-ISP Response Codes Verbose Code Numeric Code 11. V.34 Mode DCE-to-DCE Response Codes 12. DTE-to-DCE Data Rate Response Codes 13. Manufacturing-Only Command Summary a Command Function Default Range Basic Data Mode AT Commands Using AT Commands to Access the S-Registers Sn?, Sn=x, ?Modem Responses and Command Echo En, Vn, Xn, Wn, Qn Modem Setup Host Command Modem Response Example of a Remote Connection Product Identification Information Information Establishing a Modem Connection A, D, DS = n, S0 Hanging Up Hn, S10, Zn, &D2 Online Command Mode Escape Codes, OnModem-to-Modem Connection Data Rates Intel Confidential Intel Confidential ATH +PMHF +PMHR Supported Modulation Types Carrier Description +MS = carrier , automode, min rate, max rate S37 Originating Answering Resulting Connection Speed Modem Figured to attempt only a 28,800 bps connec Diagnostic Testing S18, &Tn Local Analog Loopback AT&T1 AT&T0 Local Analog Loopback With Self-Test AT&T8 Local Analog Loopback with Self-Test Licensing Requirements for Hayes Escape Sequence AT Escape SequencesTime-Independent Escape Sequence Hayes∗ Escape Sequence Command Default Description Data Mode Command DescriptionsNone Stant carrier mode Dialing Digits Online data mode echo Reports product code Cont ATI5 Mode from online command mode Sn=x Sn? Protocol Lapm Sequent commands to be ignored For data mode Ports asynchronous mode. This command is the same as &M0 User profile n Modem power-up Zn=x None +GMR? +MS=m See m V34BS Modulation Selection Cont +MS=m Examples DTE data rate = 115,200 bpsExamples DTE data rate = 2400 bps +PCW=m +PMH=m +PMHR none DCE +PSS=m Mand Intel Confidential Error Correction and Data Compression Mode Features Resulting \Nn Connection Types Bis with fallback to MNP5 \N3 \An \Bn None \Gn \Cn\Jn \Kn \Nn \Tn \Qn\Xn Intel Confidential +DS44=m 972,140 0,471140,1884 3768 FAX Class 1 AT Commands Fax Identity CommandsFax Identity Command Descriptions Tocols Fax Class 1 Commands +FREV?/+FMR? none Mod Selection Table Value Modulation Speed Bps Class 1 DTE-Generated Hdlc Frame Information AT+FTH=mod Fax Mode Command Descriptions +FCLASS=1 Command Default Description Receive Hdlc Data +FRH=n+FRM=n None +FRS=n None DTE after receiving the +FTH=mod command Data using the modulation selected in mod IS-101 Voice Mode AT Commands Each command may be used as follows Dtmf Detection Relay Control Voice Mode Command Descriptions +FLO=n +VBT=m +VCID=n +VDR=m Enable Report Function+VEM=m See m +VEM=m Dialtone Example 2. Setting the Event Mask Example 3. Reading the Event Mask SettingsEvent Reporting and Masking Example 1. Viewing Supported Events +VGM=n 128 +VGR=n 128+VGS=n +VGT=n +VIP none Code +VLS=n Primitive Code +VLS=n Relay/Playback Control+VNH=n Intel Confidential +VRX none = sds, sdi Defaults m = 128 +VSD=m See ‘m’ Manufac +VSM=m turer- specified Vsr Comments Samples/second Compression Method Selection +VSM=m ManufacVsr Hard Disk +VSP=n +VTD=n 100 +VTS=m none Dtmf and Tone Generation AT+VTS=DTMF or AT+VTS= , ,duration For example AT+VTS= , ,50 Intel Confidential S-Register Command Descriptions Registers Ascii decimal S11 S10S12 S14 138 S16 S21 S22 118 S23 None S27 S31 S33 Maximum Line Speed Attempted 110 Caller ID Caller ID Tags for Formatted Reporting Ring Manufacturing-Only Command Descriptions MANUFACTURING-ONLY CommandsNCnn S91 S92 $TTnn Tone Test Command Analog Loopback ALB Test FAX Test Command Bit Pins #VGP0=n#VGP1=n See Note #VGP2=n 118 Programmer’s Guide Parallel Host Interface 16C450/16C550A Uart119 Parallel Host Interface Uart Register Bit Assignments Register BIT Number Address Name Uart Register Definitions Scratch Register SCRModem Status Register MSR Line Status Register LSR Are no subsequent Fifo errors Modem Control Register MCR Line Control Register LCR 123 Fifo Control Register FCR Trigger Level Bytes Interrupt Control Functions Interrupt Identity Register IIR125 Transmitter Holding Register THR Interrupt Enable Register IER10.1.10Receiver Buffer Register RBR Fifo Interrupt Mode Operation 10.2 16C550A Uart Fifo Operation10.1.11Divisor Latch Registers DLM and DLL Programmable Data Rates Fifo Polled Mode Operation 129 130