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Intel 537EX manual 3.9.2Local Analog Loopback With Self-TestAT&T8, Intel Confidential, Local Modem

Models: 537EX

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Figure 6. Local Analog Loopback Test

Data Mode AT COMMANDS

Figure 6. Local Analog Loopback Test

LOCAL MODEM

TXD

TRANSMITTER

DTE

RXD

RECEIVER

Local Modem (or Test Modem)

AT&F &W<CR>	Returns the modem to the factory defaults.
AT S18 = 0 &T1	Causes the modem to run local analog loopback without self-test.
CONNECT 115200	Modem response code indicates that analog loopback is
	enabled with a DTE speed of 115200.

This is a test. Test string that the user could type at the keyboard. If the received data is the same as the test string, then the DTE-to-modem communication channel is working properly.

+++AT	TIES Escape Sequence is used to return to command mode.
OK	Modem enters command mode.
AT&T0	Terminates any loopback test.
OK	Modem aborts analog loopback and stays in command mode.

3.9.2Local Analog Loopback With Self-Test [AT&T8]

This test is used by the local DTE to check the DTE-to-modem communication integrity.

Figure 7. Local Analog Loopback with Self-Test

		LOCAL MODEM
TXD	PATTERN		TRANSMITTER
	PATTERN
	GENERATOR
	GENERATOR
DTE
RXD	PATTERN
	PATTERN		RECEIVER
	CHECKER		RECEIVER
	CHECKER

536EX Chipset Developer’s Manual

37

Intel Confidential

Image 37

Intel 537EX manual 3.9.2Local Analog Loopback With Self-TestAT&T8, Intel Confidential, Local Modem, Data Mode AT COMMANDS

Contents

Developer’s Manual 537EX ChipsetJanuary 536EX Chipset Developer’s Manual Intel ConfidentialContents ContentsIntel Confidential Figures ContentsIntel Confidential Tables ContentsIntel Confidential 536EX Chipset Developer’s ManualRevision History ContentsIntel Confidential Date1.1Controllerless Modem Driver Overview IntroductionIntel Confidential 1.1.2Windows 95 and Windows Figure 1. WDM Driver Block DiagramUser applications Kernel - ring01.2V.90/V.92 and V.34 Data Modes Figure 2. VxD Mini Port Driver Block DiagramIntel Confidential IntroductionIntel Confidential 1.3Modem Connection OverviewIntroduction Table 2. DCE-to-DCEData Rates for Each Mode Table 1. DTE-to-DCEData Rates for Each ModeTable 3. DCE-to-ISPData Rates for V.90 Mode Intel ConfidentialIntel Confidential 1.4.1Sending CommandsIntroduction Table 4. DTE-ModemData Rate Response Codes1.4.3Dial Modifier 1.4.2AT Escape SequencesIntel Confidential IntroductionAT Command Summary Tables AT Command Summary TablesTable 5. Data Mode Command Summary Intel ConfidentialTable 5. Data Mode Command Summary Continued AT Command Summary TablesIntel Confidential 536EX Chipset Developer’s ManualTable 5. Data Mode Command Summary Continued AT Command Summary TablesIntel Confidential Result code typeTable 5. Data Mode Command Summary Continued AT Command Summary TablesIntel Confidential 536EX Chipset Developer’s ManualTable 5. Data Mode Command Summary Continued AT Command Summary TablesGenerate data mode calling tone Intel ConfidentialTable 6. V.44/V.42/V.42 bis MNP Command Summary AT Command Summary TablesIntel Confidential 536EX Chipset Developer’s ManualIntel Confidential AT Command Summary Tablesconnect state, transmits 536EX Chipset Developer’s ManualTable 7. Fax Identity Command Summary AT Command Summary TablesTable 8. Fax Class 1 Command Summary Intel ConfidentialTable 9. IS-101Voice Command Summary AT Command Summary TablesIntel Confidential Table 10. Voice DTE→DCE Character PairsIntel Confidential AT Command Summary TablesTable 10. Voice DTE→DCE Character Pairs Continued Table 11. Voice DTE←DCE Character PairsIntel Confidential AT Command Summary TablesTable 11. Voice DTE←DCE Character Pairs Continued Table 12. Dial ModifiersIntel Confidential AT Command Summary TablesTable 13. S-RegisterSummary Continued 536EX Chipset Developer’s ManualData Mode AT COMMANDS Data Mode AT COMMANDSIntel Confidential Data Mode AT COMMANDSTable 14. Data Reporting Wn Mapping Figure 3. Example of a Remote ConnectionIntel Confidential Data Mode AT COMMANDSExamples +FMFR?, +FMDL?, +FREV? Data Mode AT COMMANDS 3.6Online Command Mode Escape Codes, On3.7Hanging Up Hn, S10, Zn, &D2 3.8Modem-to-ModemConnection Data RatesIntel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual Intel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual +PMH=0Intel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual hook to connect the call. Now you can answer the phone and talk. After completing your voice conversation, the modem will issue another +PMHF and ATO command to initiate a Quick Connect. If the server rejects the request to go on hold, the user can stay on line ATO command issued or disconnect from his initial data connection ATH command issued Data Mode AT COMMANDSIntel Confidential Intel Confidential Data Mode AT COMMANDSTable 16. Supported Modulation Types 536EX Chipset Developer’s ManualData Mode AT COMMANDS 3.9Diagnostic Testing S18, &Tn3.9.1Local Analog Loopback AT&T1 Intel Confidential3.9.2Local Analog Loopback With Self-TestAT&T8 Data Mode AT COMMANDSIntel Confidential LOCAL MODEM3.10.1Time-IndependentEscape Sequence Data Mode AT COMMANDSIntel Confidential Local Modem or Test Modem<char1><char2><char3><AT command><contents of S3> Data Mode AT COMMANDSIntel Confidential FormatTable 18. Data Mode Command Descriptions Data Mode AT COMMANDS3.10.2Hayes* Escape Sequence Intel ConfidentialIntel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual Intel Confidential Data Mode AT COMMANDSSn=x 536EX Chipset Developer’s ManualIntel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual NOTE: An asterisk * denotes the factory-defaultsetting Data Mode AT COMMANDSIntel Confidential 536EX Chipset Developer’s ManualIntel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual AT&V0Intel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual Command Default Data Mode AT COMMANDSIntel Confidential 536EX Chipset Developer’s ManualIntel Confidential Data Mode AT COMMANDS1, 0, 536EX Chipset Developer’s ManualIntel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual Intel Confidential Data Mode AT COMMANDS+ESR +ETBMIntel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual +GMRIntel Confidential Data Mode AT COMMANDSmodulations 536EX Chipset Developer’s ManualIntel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual <carrier>Intel Confidential Data Mode AT COMMANDS+PHSW= +PMHFIntel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual Error Correction and Data Compression Error Correction and Data Compression4Intel Confidential Table 19. Operating ModesIntel Confidential Error Correction and Data CompressionTable 20. Resulting +ES Connection Types 536EX Chipset Developer’s ManualIntel Confidential Error Correction and Data Compression536EX Chipset Developer’s Manual Intel Confidential Error Correction and Data Compression536EX Chipset Developer’s Manual Intel Confidential Error Correction and Data Compression+DR=m <direction>Intel Confidential Error Correction and Data Compression536EX Chipset Developer’s Manual 3768Intel Confidential Error Correction and Data Compression+ER=m 536EX Chipset Developer’s ManualIntel Confidential Error Correction and Data Compression536EX Chipset Developer’s Manual +ES=m5.1Fax Identity Commands Fax Class 1 AT Commands5.2Fax Class 1 Commands Fax Class 1 AT CommandsIntel Confidential Fax Class 1 AT CommandsTable 23. <mod> Selection Table 536EX Chipset Developer’s ManualIntel Confidential Fax Class 1 AT CommandsFigure 8. T.30 HDLC Frame Format Table 24. Fax Mode Command Descriptions Fax Class 1 AT CommandsIntel Confidential Table 24. Fax Mode Command Descriptions Continued Fax Class 1 AT CommandsIntel Confidential +FRH=mTable 24. Fax Mode Command Descriptions Continued Fax Class 1 AT CommandsIntel Confidential 536EX Chipset Developer’s ManualIS-101Voice Mode AT Commands IS-101Voice Mode AT CommandsIntel Confidential Table 25. Voice Mode Command Descriptions IS-101Voice Mode AT Commands6.1DTMF Detection Reporting 6.2Relay ControlIntel Confidential IS-101Voice Mode AT Commands+FLO=m m = <deassert>, <assert>m=<enable>, <report> IS-101Voice Mode AT CommandsIntel Confidential 536EX Chipset Developer’s ManualIntel Confidential IS-101Voice Mode AT Commandsm = <mask> +VEM=mIntel Confidential Intel Confidential IS-101Voice Mode AT Commands+VIP 536EX Chipset Developer’s ManualIntel Confidential IS-101Voice Mode AT CommandsPreassigned Voice I/O Labels 536EX Chipset Developer’s ManualIntel Confidential IS-101Voice Mode AT CommandsVoice I/O Primitive Codes Relay/Playback Control: contIntel Confidential IS-101Voice Mode AT Commands536EX Chipset Developer’s Manual +VRXIntel Confidential IS-101Voice Mode AT Commandsm= <cml>, <vsr>, <scs>, <sel> +VSM=mIntel Confidential IS-101Voice Mode AT Commands536EX Chipset Developer’s Manual Compression Method Selection: contfactory default is ‘0’ IS-101Voice Mode AT CommandsIntel Confidential 536EX Chipset Developer’s ManualIntel Confidential IS-101Voice Mode AT Commands536EX Chipset Developer’s Manual +VTS=mCommand IS-101Voice Mode AT CommandsDefault Intel ConfidentialTable 26. S-RegisterCommand Descriptions S-RegistersIntel Confidential S-RegistersS-Registers Intel Confidential536EX Chipset Developer’s Manual S-Registers Intel Confidential536EX Chipset Developer’s Manual S-Registers Intel Confidential536EX Chipset Developer’s Manual S-Registers Intel Confidential536EX Chipset Developer’s Manual Intel Confidential Caller IDCaller ID Table 27. Caller ID Tags for Formatted ReportingCaller ID Intel Confidential536EX Chipset Developer’s Manual RING DATE = TIME = NMBR = NAME = DOE JOHN MESG =UART Parallel Host Interface 16C450/16C550AIntel Confidential Parallel Host Interface 16C450/16C550A UARTUART Receiver Flow Diagram UART Transmitter Flow DiagramIntel Confidential Parallel Host Interface 16C450/16C550A UARTREGISTER REGISTERBIT NUMBER ADDRESS9.2.2Modem Status Register MSR 9.2.1Scratch Register SCRIntel Confidential Parallel Host Interface 16C450/16C550A UARTFigure 16. Line Status Register LSR 9.2.3Line Status Register LSR9.2.5Line Control Register LCR 9.2.4Modem Control Register MCRIntel Confidential Parallel Host Interface 16C450/16C550A UARTIntel Confidential 9.2.6FIFO Control Register FCRRegister Parallel Host Interface 16C450/16C550A UARTIntel Confidential 9.2.7Interrupt Identity Register IIRParallel Host Interface 16C450/16C550A UART Figure 20. Interrupt Identity Register IIRFigure 21. Interrupt Enable Register IER 9.2.8Interrupt Enable Register IER9.2.9Transmitter Holding Register THR Intel Confidential9.2.11Divisor Latch Registers DLM and DLL 9.2.10Receiver Buffer Register RBRIntel Confidential Parallel Host Interface 16C450/16C550A UART9.3.2FIFO Polled Mode Operation 9.3.1FIFO Interrupt Mode Operation9.316C550A UART FIFO Operation Intel ConfidentialParallel Host Interface 16C450/16C550A UART Intel Confidential536EX Chipset Developer’s Manual