Command Default Description Receive Hdlc Data | Intel MD566X

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

Table 5-3. Fax Mode Command Descriptions (Continued)

Note: An asterisk (*) denotes the factory-default setting.

	Command	Default	Description

			Receive HDLC Data: (cont.)
			The modem obeys the configured flow control from the DTE. If the DTE sends any
			character to the modem other than DC1 or DC3 while the modem is in this mode,
			the modem enters command mode and return an ‘OK’ result code.
			After sending the result code indicating that frame reception is complete, the mo-
	+FRH=n		dem continues to receive and buffer the data in the selected mode. If the DTE is-
	(cont.)		sues another +FRH=<mod> command, the modem returns another “CONNECT”
			result code and continues with HDLC reception. If the DTE issues any command
			that changes modulation, the DCE stops the receive process; the DCE then dis-
			cards any buffered data and processes the command.
			Range: <mod> = 3
			Refer to Table 5-2 on page 74.

			Receive Data: The +FRM=<mod> command causes the modem to enter receive
			mode using the modulation scheme specified in <mod>. <mod> may have the val-
			ues shown in Table 5-2 on page 74.
			When the selected carrier is detected, the modem sends a ‘CONNECT’ result to
			the DTE. If a different signal is detected, the modem sends a “+FCERROR” (con-
			nect error) result code to the DTE and returns to command mode.
			After receiving the selected carrier, the modem transfers all received data patterns
	+FRM=n	none	to the DTE as consecutive start-stop framed bytes, including leading marking con-
	+FRM=n	none	ditions or flags. The modem marks the end of the data stream with <DLE><ETX>.

			Upon loss of carrier, the modem returns to command state and sends a “NO CAR-
			RIER” result code to the DTE.
			Note: If the modem is on-hook, then the modem always returns an ‘ERROR’
			message to the DTE after receiving the +FRM=<mod> command.
			Range: <mod> = 24, 48, 72, 73, 74, 96, 97, 98, 121, 122, 145, 146
			Refer to Table 5-2 on page 74.

			Wait for Silence: The +FRS=<TIME> command causes the modem to send an
			“OK” result code to the DTE when silence has been detected on the line for the
			amount of time specified. The value <TIME> is in 10-ms intervals. The command
	+FRS=n	none	terminates when the required amount of silence has been detected on the line or
	+FRS=n	none	the DTE sends the modem another character that is discarded. In either event, the

			DTE returns the “OK” result code.
			Range: <TIME> = 1–255 (10 ms)

Programmer’s Guide

Intel Confidential

77

Image 77

Intel MD566X manual Command Default Description Receive Hdlc Data, +FRH=n, +FRM=n None, +FRS=n None

Contents

MD566X Revision History Conventions Symbol Units of measureProgrammer’s Guide Acronym Definition Dram Intel V.90/V.92 56K Chipsets Chipset Contents QtyIntroduction Modem Connection Overview V.92, V.90 and V.34 Data Modes Mode Data Rate bps Affected Data DTE-to-DCE Data Rates for Each ModeDCE-to-DCE Data Rates for Each Mode Command Function Default Range Reported by AT Command Summary TablesData Mode Command Summary Intel Confidential Data rate Result code type Yes Ports only Async mode +GMI? Intel Confidential Command Function Default Range Reported By &Vn V.44 / V.42 / V.42 bis MNP∗ Command Summary Intel Confidential Value saved in Nvram IS-101 Voice Command Summary Fax Identity Command SummaryFax Class 1 Command Summary Response Hex Code Function Voice DTE→DCE Character Pairs Voice DTE←DCE Character Pairs S-Register Summary Dial Modifiers Command FunctionRegister Function Default Range Units Reported By &Vn Verbose Code Numeric Code 10. V.90/V.92 Mode DCE-to-ISP Response Codes 12. DTE-to-DCE Data Rate Response Codes 11. V.34 Mode DCE-to-DCE Response Codes Command Function Default Range 13. Manufacturing-Only Command Summary a Using AT Commands to Access the S-Registers Sn?, Sn=x, ? Basic Data Mode AT CommandsModem Responses and Command Echo En, Vn, Xn, Wn, Qn Modem Setup Host Command Modem Response Example of a Remote Connection Information Product Identification Information Establishing a Modem Connection A, D, DS = n, S0 Modem-to-Modem Connection Data Rates Online Command Mode Escape Codes, OnHanging Up Hn, S10, Zn, &D2 Intel Confidential Intel Confidential ATH +PMHF +PMHR Carrier Description Supported Modulation Types S37 +MS = carrier , automode, min rate, max rate Figured to attempt only a 28,800 bps connec Originating Answering Resulting Connection Speed Modem Local Analog Loopback AT&T1 Diagnostic Testing S18, &Tn AT&T0 Local Analog Loopback with Self-Test Local Analog Loopback With Self-Test AT&T8 Time-Independent Escape Sequence AT Escape SequencesLicensing Requirements for Hayes Escape Sequence Hayes∗ Escape Sequence None Data Mode Command DescriptionsCommand Default Description Stant carrier mode Dialing Digits Online data mode echo Reports product code ATI5 Cont Mode from online command mode Sn? Sn=x Protocol Lapm Sequent commands to be ignored For data mode Ports asynchronous mode. This command is the same as &M0 User profile n Zn=x None Modem power-up +GMR? V34BS +MS=m See m Cont Modulation Selection Examples DTE data rate = 2400 bps Examples DTE data rate = 115,200 bps+MS=m +PMH=m +PCW=m DCE +PMHR none Mand +PSS=m Intel Confidential Mode Features Error Correction and Data Compression Resulting \Nn Connection Types Bis with fallback to MNP5 \N3 \Bn None \An \Jn \Cn\Gn \Nn \Kn \Xn \Qn\Tn Intel Confidential 140,1884 3768 0,471+DS44=m 972,140 Fax Identity Commands FAX Class 1 AT CommandsFax Identity Command Descriptions Tocols +FREV?/+FMR? none Fax Class 1 Commands Value Modulation Speed Bps Mod Selection Table Class 1 DTE-Generated Hdlc Frame Information AT+FTH=mod +FCLASS=1 Fax Mode Command Descriptions +FRH=n Command Default Description Receive Hdlc Data+FRM=n None +FRS=n None DTE after receiving the +FTH=mod command Data using the modulation selected in mod Each command may be used as follows IS-101 Voice Mode AT Commands Relay Control Dtmf Detection +FLO=n Voice Mode Command Descriptions +VCID=n +VBT=m +VEM=m See m Enable Report Function+VDR=m Dialtone +VEM=m Example 3. Reading the Event Mask Settings Example 2. Setting the Event MaskEvent Reporting and Masking Example 1. Viewing Supported Events +VGR=n 128 +VGM=n 128+VGS=n +VGT=n +VIP none +VLS=n Code +VNH=n Relay/Playback ControlPrimitive Code +VLS=n Intel Confidential +VRX none +VSD=m See ‘m’ = sds, sdi Defaults m = 128 Vsr Comments Samples/second Manufac +VSM=m turer- specified +VSM=m Manufac Compression Method SelectionVsr Hard Disk +VTD=n 100 +VSP=n +VTS=m none AT+VTS=DTMF or Dtmf and Tone Generation AT+VTS= , ,duration For example AT+VTS= , ,50 Intel Confidential Registers S-Register Command Descriptions Ascii decimal S12 S10S11 S16 S14 138 S22 118 S21 S27 S23 None S31 S33 Maximum Line Speed Attempted 110 Caller ID Tags for Formatted Reporting Caller ID Ring NCnn MANUFACTURING-ONLY CommandsManufacturing-Only Command Descriptions S92 S91 $TTnn FAX Test Tone Test Command Analog Loopback ALB Test #VGP0=n Command Bit Pins#VGP1=n See Note #VGP2=n 118 119 Parallel Host Interface 16C450/16C550A UartProgrammer’s Guide Register BIT Number Address Name Parallel Host Interface Uart Register Bit Assignments Scratch Register SCR Uart Register DefinitionsModem Status Register MSR Line Status Register LSR Modem Control Register MCR Are no subsequent Fifo errors 123 Line Control Register LCR Trigger Level Bytes Fifo Control Register FCR 125 Interrupt Identity Register IIRInterrupt Control Functions 10.1.10Receiver Buffer Register RBR Interrupt Enable Register IERTransmitter Holding Register THR 10.2 16C550A Uart Fifo Operation Fifo Interrupt Mode Operation10.1.11Divisor Latch Registers DLM and DLL Programmable Data Rates Fifo Polled Mode Operation 129 130