Cn, Gn, Jn | Intel MD566X specification

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

Table 4-2. V.44 / V.42 / V.42 bis and MNP Data Mode Command Descriptions

Set Auto-Reliable Buffer (requires a license from Microcom): In auto-reliable mode (\N3), this command determines the fallback method and enables data buffer- ing. The settings for this command are used by the modem during the V.42 detection phase.

	\Cn	0	n = 0–2
	\Cn	0	n = 0*	Does not buffer data.
			n = 0*	Does not buffer data.
			n = 1	Reserved.
			n = 2	Does not buffer data. Switches to buffer (normal) mode upon receipt
				of auto-reliable fallback character and passes it to serial port. This
				feature allows non-V.42 modems to connect immediately to a V.42
				modem without data loss.

		Set Modem Port Flow Control: In buffer (normal) mode (either \N0 or after fall-
		back), this command enables modem-to-modem flow control using XOFF (13h) to
		stop and XON (11h) to start transmission between modems.
\Gn	0	n = 0, 1
		n = 0, 1
		n = 0*	Disables port flow control
		n = 1	Sets port flow control to XON/XOFF

		bps Rate Adjust Control: If this command is enabled, the serial port speed auto-
		matically changes to the modem-connection speed. This forces the user to change
		the DTE-to-modem bps rate, if needed. If the command is disabled, the serial port
		speed is independent of the connection speed, which allows much greater through-
\Jn	0	put when using error correction and data compression.
		n = 0, 1
		n = 0*	Turns off feature
		n = 1	Turns on feature

Programmer’s Guide

Intel Confidential

67

Image 67

Intel MD566X manual Cn, Gn, Jn

Contents

MD566X Revision History Acronym Definition Symbol Units of measureConventions Programmer’s Guide Dram Introduction Chipset Contents QtyIntel V.90/V.92 56K Chipsets Modem Connection Overview V.92, V.90 and V.34 Data Modes 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 Command Function Default Range Reported By &Vn V.44 / V.42 / V.42 bis MNP∗ Command Summary Intel Confidential Value saved in Nvram Fax Class 1 Command Summary Fax Identity Command SummaryIS-101 Voice Command Summary Response Hex Code Function Voice DTE→DCE Character Pairs Voice DTE←DCE Character Pairs Register Function Default Range Units Reported By &Vn Dial Modifiers Command FunctionS-Register Summary 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 Modem Setup Host Command Modem Response Basic Data Mode AT CommandsUsing AT Commands to Access the S-Registers Sn?, Sn=x, ? Modem Responses and Command Echo En, Vn, Xn, Wn, Qn Example of a Remote Connection Information Product Identification 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 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 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 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 +MS=m Examples DTE data rate = 115,200 bpsExamples DTE data rate = 2400 bps +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 \Gn \Cn\Jn \Nn \Kn \Tn \Qn\Xn Intel Confidential +DS44=m 972,140 0,471140,1884 3768 Tocols FAX Class 1 AT CommandsFax Identity Commands Fax Identity Command Descriptions +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 +FRS=n None Command Default Description Receive Hdlc Data+FRH=n +FRM=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 +VDR=m Enable Report Function+VEM=m See m Dialtone +VEM=m Example 1. Viewing Supported Events Example 2. Setting the Event MaskExample 3. Reading the Event Mask Settings Event Reporting and Masking +VGT=n +VGM=n 128+VGR=n 128 +VGS=n +VIP none +VLS=n Code Primitive Code +VLS=n Relay/Playback Control+VNH=n Intel Confidential +VRX none +VSD=m See ‘m’ = sds, sdi Defaults m = 128 Vsr Comments Samples/second Manufac +VSM=m turer- specified Hard Disk Compression Method Selection+VSM=m Manufac Vsr +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 S11 S10S12 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 Manufacturing-Only Command Descriptions MANUFACTURING-ONLY CommandsNCnn S92 S91 $TTnn FAX Test Tone Test Command Analog Loopback ALB Test #VGP2=n Command Bit Pins#VGP0=n #VGP1=n See Note 118 Programmer’s Guide Parallel Host Interface 16C450/16C550A Uart119 Register BIT Number Address Name Parallel Host Interface Uart Register Bit Assignments Line Status Register LSR Uart Register DefinitionsScratch Register SCR Modem Status Register MSR Modem Control Register MCR Are no subsequent Fifo errors 123 Line Control Register LCR Trigger Level Bytes Fifo Control Register FCR Interrupt Control Functions Interrupt Identity Register IIR125 Transmitter Holding Register THR Interrupt Enable Register IER10.1.10Receiver Buffer Register RBR Programmable Data Rates Fifo Interrupt Mode Operation10.2 16C550A Uart Fifo Operation 10.1.11Divisor Latch Registers DLM and DLL Fifo Polled Mode Operation 129 130