Intel 537EX manual +FTH=m

Page 69

Fax Class 1 AT Commands

Table 24. Fax Mode Command Descriptions (Continued)

Command

Default

Description

 

 

 

 

 

Transmit HDLC Data: The +FTH=<mod> command causes the modem to transmit

 

 

data framed in HDLC protocol using the modulation mode selected. <mod> may have

 

 

the values shown in Table 23 on page 65.

 

 

After receiving the +FTH command, the modem sends a ‘CONNECT’ result code to

 

 

the DTE. The modem then transmits signal converter training (if required) followed by

 

 

flags until the first byte of data is sent by the DTE. The modem terminates the +FTH

 

 

command upon detecting <DLE><ETX> characters in the data stream.

 

 

When the buffer is empty, the modem computes and appends the FCS (Frame Check

 

 

Sequence) and a closing flag to the frame. The modem ensures that the minimum

 

 

number of flags required by T.30 are sent before the data from the DTE begins to be

 

 

transmitted.

 

 

The modem checks the final frame bit in the control field of each frame; this is the fifth-

 

 

received bit of the second byte of each frame. If the final frame bit is a ‘1’, the modem

 

 

ceases transmission after the frame is sent, returns to command state, and sends the

+FTH=m

none

‘OK’ result code to the DTE. If the final frame bit is a ‘0’, the modem sends another

‘CONNECT’ result code to the DTE after the current frame is sent. The modem

 

 

continues to transmit flags until the DTE takes one of the following actions:

 

 

• The DTE sends additional data. The modem then transmits another frame.

 

 

• The DTE sends only <DLE><ETX> (a null frame). The modem then turns off the

 

 

transmit carrier and send the ‘OK’ result code to the DTE.

 

 

• If the DTE transmits no additional data within 5 seconds from when the modem

 

 

reported the ‘CONNECT’ result code, the modem turns off the transmit carrier

 

 

mode, returns to command mode, and sends the ‘ERROR’ result code to the DTE.

 

 

In HDLC transmit mode, the modem performs HDLC transparency functions, FCS

 

 

generation, and buffers the transmit data. The modem uses the configured method of

 

 

flow control to pause the DTE as necessary.

 

 

NOTE: If the modem is on-hook, it always returns an ‘ERROR’ message to the DTE

 

 

after receiving the +FTH=<mod> command.

 

 

Range: <mod> = 3

 

 

Refer to Table 23 on page 65.

 

 

 

 

 

Transmit Data: The +FTM = <mod> command causes the modem to transmit data

 

 

using the modulation selected in <mod>.

 

 

The modem returns a ‘CONNECT’ result code and transmits the proper training

 

 

sequence in the selected mode, followed by constant ‘1’ bits until data is received from

 

 

the DTE. The modem terminates this command upon detecting <DLE><ETX>

 

 

characters in the data stream.

 

 

If the modem’s transmit buffer empties and the last transmitted character is an ASCII

 

 

NULL (00), the modem continues to transmit NULLs until the DTE sends more data or

 

 

5 seconds have elapsed. After 5 seconds have elapsed with an empty transmit buffer,

+FTM=m

none

the DCE turns off the transmit carrier, returns to command state, and returns an

‘ERROR’ result code to the modem.

 

 

 

 

NOTE: Hex $00 replication does not provide the required timing needed for

 

 

generating the TCF frame (1.5 seconds of ‘0’s’).

 

 

If the modem’s transmit buffer empties and the last transmitted character was not a

 

 

NULL, the modem turns off the transmit carrier, returns to command state, and sends

 

 

the ‘OK’ result code to the DTE.

 

 

NOTE: If the modem is on-hook, the modem always returns an ‘ERROR’ message to

 

 

the DTE after receiving the +FTM = <mod> command.

 

 

Range: <mod> = 24, 48, 72, 73, 74, 96, 97, 98, 121, 122, 145, 146

 

 

Refer to Table 23 on page 65.

 

 

 

 

 

Stop Transmission and Pause: The +FTS=<TIME> command causes the modem to

+FTS=m

none

stop all transmissions. The modem waits for the specified amount of time, then sends

an ‘OK’ result code to the DTE. The value <TIME> is in 10 ms intervals.

 

 

 

 

Range: <TIME> = 0–255 (in 10 ms intervals)

 

 

 

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

536EX Chipset Developer’s Manual

69

Intel Confidential

Page 68 Page 70
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Page 68 Page 70
Contents Developer’s Manual 537EX ChipsetIntel Confidential Contents Figures Tables Revision History Date Revision Description001 Initial release Controllerless Modem Driver Overview IntroductionWindows 95 and Windows Tapi V.90/V.92 and V.34 Data ModesUnimodem Intelsdb.VXDModem Connection Overview DTE-to-DCE Data Rates for Each Mode AT Commands OverviewDCE-to-DCE Data Rates for Each Mode DCE-to-ISP Data Rates for V.90 ModeDelayed Call Sending CommandsDTE-Modem Data Rate Response Codes Numeric TextAT Escape Sequences Command FunctionDial Modifier Dialing digitsCommand Function Default Range Reported By &Vn Data Mode Command SummaryIntel Confidential Intel Confidential Intel Confidential +ESA +EB+ESR +ETBM44/V.42/V.42 bis MNP Command Summary Processes flow control characters and passes to local Fax Class 1 Command Summary Fax Identity Command SummaryIS-101 Voice Command Summary Voice DTE→DCE Character PairsResponse Hex Code Function Voice DTE←DCE Character Pairs Voice DTE →DCE Character PairsDEL ESCDial Modifiers Register Function Default Range Units Reported by &VnRegister Summary AsciiRegister Function Default Range Units Using AT Commands to Access the S-Registers Sn?, Sn=x, ? Modem Responses and Command Echo En, Vn, Xn, Wn, QnModem Setup Host Modem Response Command Disable Enable Data Reporting Wn MappingDTE Resets and then configures the modem to Nvram user profile AT Commands Product Information Establishing a Modem Connection A, D, DS = n, S0Product Identification Information Online Command Mode Escape Codes, On Hanging Up Hn, S10, Zn, &D2Modem-to-Modem Connection Data Rates Intel Confidential Modem-on-Hold Incoming Voice Call in Data Mode Modem-on-Hold Initiating a Voice Call in Data Mode Intel Confidential Carrier Description Supported Modulation TypesLocal Analog Loopback AT&T1 Diagnostic Testing S18, &TnLocal Modem or Test Modem Local Analog Loopback With Self-Test AT&T8AT Escape Sequences Time-Independent Escape SequenceLicensing Requirements for Hayes Escape Sequence Example Data Mode Command Descriptions Command Default DescriptionHayes* Escape Sequence Host in either online or off-line command mode Previously stored in the Nvram with the AT&Zn=x commandEcho disabled Echo enabledATI2 DTESn=x Modem dials a telephone number touch tone dialing CommandNumeric or verbose form Numeric formSubsequent commands to be ignored DisconnectingResets the modem and recalls user profile DCD or Rlsd signalActive Profile AT&V0Stored Profile Telephone NumbersCommand to see the stored telephone number S-register configurations into the Nvram user profile ‘n’Select profile = 0-9 a B C D # * T P R W @Indication Definition Command Default+EB Nrzi encoding and decoding disabled CRC generation and checking disabledSecondary channel operation, and vice versa 12/V.34+ETBM +ESR+GSN +GMR+IFC +ILRR=m+MA? will display a list of enabled alternative modulations +MS command description= carrier,carrier,…carrier If +MS = ,0,, no alternative modulations will be availableBELL103 Carrier DescriptionBELL212 +MS=m See ‘m’+PMHF +PHSW=Value Description +PMHREnable Short Phase 1 and Short Phase Conjunction with the +PSS commandEnable Short Phase Disable short Phase 1 and Short PhaseOperating Modes Mode Features+ES Settings Answer Modem 44/V.42/V.42 bis and MNP Data Modem Command DescriptionsResulting +ES Connection Types +ES=1, 0 +ES=4, 4 +ES=3, 0 +ES=3, 2\Bn \Kn Direction +DR=m+DS=m Max string+EFCS=m 3768Decimal value and the format is as follows Display messages when +ER =+ER=m +ER LapmControl during non-error control operation Setting is ignored if origrqst=6Non-error control operation +ES=mFax Class 1 Commands Fax Identity CommandsFax Identity Command Descriptions +FMFR?/+FMIValue Modulation Speed bps Mod Selection TableClass 1 DTE-Generated Hdlc Frame Information AT+FTH=mod 30 Hdlc Frame FormatFax Mode Command Descriptions +FCLASS?+FCLASS +FRS=m +FRH=m+FTH=m IS-101 Voice Mode AT Commands Voice Mode Command Descriptions Dtmf Detection ReportingRelay Control +FLO=m +VDR=m See ‘m’ Enable report FunctionCaller ID report Command Reserved Distinctive ringing All Defaults = ‘C’, BB860980, BFE63883, BB863EE0Event Description +VEM=m See ‘m’EIGHT-DIGIT HEX Code B B 8 6 3 E E EX Value BIT Value EventHEX Digit Location Local telephone, or speaker 128 Nominal transmit level+VIP Preassigned Voice I/O Labels Label+VLS=m Voice I/O Primitive Codes Relay/Playback ControlPrimitive Code Description +VSD=m See ‘m’ +VRX141 AD3 3-bit Adaptive differential pulse code modulation +VSM=? command to obtain supported sampling rates+VSM=m Range 4800, 7200, 8000, and 11025 samples/secondSerial CmlHard Disk Compression100 Default value 1 second Factory default is ‘0’100 Range 5-255 units of 0.01 seconds+VTS=m None Dual tones may be sent using the following formatSpecified by +VTD=m This sends a 500 ms period of silenceCommand Default Description Register Command Descriptions S10 Range Seconds Default 0 seconds Escape sequencesS16 S22 118 S21S25 S30Modem or when a ring signal is detected Modem exits sleep mode whenever the host reads or writes toSleep mode is disabled by setting S33 to ‘0’ Inactive state whenTag Description Caller ID Tags for Formatted ReportingRing Uart Emulation in Intelsdb.VxD Uart Emulation in the Controllerless ModemUart THRRBR Parallel Host Interface Uart Register Bit Assignments Uart Register Definitions Scratch Register SCRModem Status Register MSR OE Overrun Error-Not supported Bit Framing errorLine Status Register LSR StackProcedure is as follows IER Interrupt Enable registerModem Control Register MCR Line Control Register LCRBit Fifo Control Register FCRInterrupt Identity Register IIR Interrupt Control FunctionsID1 ID0 ID bit 2 for Fifo mode Interrupt Enable Register IERTransmitter Holding Register THR Dlab =Divisor Latch Registers DLM and DLL Receiver Buffer Register RBRProgrammable Data Rates Data Rate Divisor Number Divisor Latch HexFifo Polled Mode Operation Fifo Interrupt Mode Operation16C550A Uart Fifo Operation 102536EX Chipset Developer’s Manual 103

537EX specifications

The Intel 537EX is a powerful and innovative embedded processor designed for a range of applications, particularly in the fields of industrial automation, telecommunications, and transport management systems. This processor is a member of Intel's embedded product line, tailored specifically to meet the demands of systems that require high reliability and long lifecycle support.

One of the main features of the Intel 537EX is its multi-core architecture, which enables efficient parallel processing capabilities. This allows for the execution of multiple tasks simultaneously, significantly improving overall system performance. The processor also incorporates Intel’s advanced power management technology, which ensures that the device consumes energy efficiently, enhances thermal performance, and prolongs the lifespan of the system.

The Intel 537EX supports a range of connectivity options, including high-speed Ethernet and Serial ATA interfaces. This ensures that it can easily integrate into existing systems, seamlessly supporting applications that require robust data transfer capabilities. Additionally, the processor is equipped with multiple I/O ports, facilitating the connection of various peripherals and sensors, which is crucial in industrial applications.

One of the standout technologies within the Intel 537EX is its support for hardware virtualization. This feature allows for the creation of multiple virtual environments within a single physical structure, optimizing resource utilization and enhancing system flexibility. Additionally, Intel’s integrated security technologies provide a significant layer of protection against potential threats, ensuring that embedded systems remain secure.

Another characteristic of the Intel 537EX is its extensive software support, which includes compatibility with various operating systems and development environments. This versatility makes it an attractive choice for developers looking to build or upgrade their embedded systems. With access to Intel's comprehensive software tools, developers can quickly optimize applications to take full advantage of the processor's capabilities.

The Intel 537EX also boasts excellent thermal performance, allowing it to operate efficiently in harsh environments. This is crucial for embedded applications in industrial settings where temperature fluctuations are common. Overall, the Intel 537EX is engineered to deliver high-performance processing power, superior connectivity, and enhanced security, solidifying its position as a reliable choice for demanding embedded applications.
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