Intel 537EX manual Kn

Page 59

Error Correction and Data Compression

Table 21. V.44/V.42/V.42 bis and MNP Data Modem Command Descriptions (Continued)

Command

Default

 

Description

 

 

 

 

 

Set break control: Defines what action the modem takes when a break (attention signal) is sent or

 

 

received, as described below:

 

 

where n =,

 

 

 

In connect state, transmits break to remote (if in reliable mode):

 

 

0, 2, 4

Enters command mode, no break sent

 

 

1

Destructive/expedited

 

 

3

Nondestructive/expedited

\Kn

5

5

Nondestructive/nonexpedited

In command state, transmits break to remote (if in reliable mode):

 

 

 

 

0, 1

Destructive/expedited

 

 

2, 3

Nondestructive/expedited

 

 

4, 5

Nondestructive/nonexpedited

 

 

In connect state, receives break at modem port and sends to serial port:

 

 

0, 1

Destructive/expedited

 

 

2, 3

Nondestructive/expedited

 

 

4, 5

Nondestructive/nonexpedited

 

 

 

 

 

Set Inactivity Timer: During a buffer (normal) or reliable connection, if no data is sent or received within

\Tn

0

the inactivity time period, the link is disconnected. The default, ‘0’, disables this feature.

Range: 0–90 Length in minutes

 

 

 

 

n = 0*

Disables inactivity timer

 

 

 

 

 

Set XON/XOFF Pass-Through:If software flow control is enabled (\Q1), this command defines whether

 

 

the XON (11h) and XOFF (13h) characters received from the DTE are sent to the remote modem. In

 

 

addition, if the modem port flow control is enabled (\G1) in normal mode, the command specifies whether

 

 

the XON and XOFF characters received from the remote modem are sent to the DTE. In both cases, flow

\Xn

0

control operation is not affected.

Range: 0, 1

 

 

 

 

 

 

n = 0*

Processes flow control characters*

 

 

n = 1

Processes flow control characters and passes them through to the local or remote so they

 

 

 

can process the characters.

 

 

 

 

 

Set V.42 Detect Phase: In V.42 modes (+ES=3,0,2 and +ES=3,2,4), this command specifies whether the

 

 

modem detects V.42, MNP, or no error-correcting protocols from the remote modem and changes to the

-Jn

1

appropriate mode. Otherwise, only V.42 is attempted.

Range: 0, 1

 

 

 

 

 

 

n = 0

Disables the V.42 detect phase

 

 

n = 1*

Enables the V.42 detect phase

 

 

 

 

 

V.42 bis Compression Control: This command specifies whether the data in the LAPM frames are

 

 

compressed using V.42 bis data compression. This can improve throughput by as much as 400%.

 

 

Compression can be negotiated to operate in one direction or both.

“Hn

3

Range: 0–3

 

n = 0

Disables V.42 bis

 

 

 

 

n = 1

Enables V.42 bis only when transmitting data

 

 

n = 2

Enables V.42 bis only when receiving data

 

 

n = 3*

Enables V.42 bis for both transmitting and receiving data

 

 

 

 

 

V.42 bis String Length: This command specifies the maximum number of characters that can be

“On

32

compressed into one V.42 bis code word. The default value of 32 optimizes throughput for most file types.

Range: 6–250 Number of characters

 

 

 

 

n = 32*

Usual number of characters

 

 

 

 

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

536EX Chipset Developer’s Manual

59

Intel Confidential

Page 58 Page 60
Image 59
Page 58 Page 60
Contents Developer’s Manual 537EX ChipsetIntel Confidential Contents Figures Tables 001 Initial release Revision HistoryDate Revision Description Controllerless Modem Driver Overview IntroductionWindows 95 and Windows Intelsdb.VXD V.90/V.92 and V.34 Data ModesTapi UnimodemModem Connection Overview DCE-to-ISP Data Rates for V.90 Mode AT Commands OverviewDTE-to-DCE Data Rates for Each Mode DCE-to-DCE Data Rates for Each ModeNumeric Text Sending CommandsDelayed Call DTE-Modem Data Rate Response CodesDialing digits Command FunctionAT Escape Sequences Dial ModifierCommand Function Default Range Reported By &Vn Data Mode Command SummaryIntel Confidential Intel Confidential Intel Confidential +ETBM +EB+ESA +ESR44/V.42/V.42 bis MNP Command Summary Processes flow control characters and passes to local Fax Class 1 Command Summary Fax Identity Command SummaryResponse Hex Code Function IS-101 Voice Command SummaryVoice DTE→DCE Character Pairs ESC Voice DTE →DCE Character PairsVoice DTE←DCE Character Pairs DELAscii Register Function Default Range Units Reported by &VnDial Modifiers Register SummaryRegister Function Default Range Units Modem Setup Host Modem Response Command Using AT Commands to Access the S-Registers Sn?, Sn=x, ?Modem Responses and Command Echo En, Vn, Xn, Wn, Qn DTE Disable EnableData Reporting Wn Mapping Resets and then configures the modem to Nvram user profile Product Identification Information AT Commands Product InformationEstablishing 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 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&T8Licensing Requirements for Hayes Escape Sequence AT Escape SequencesTime-Independent Escape Sequence Example Hayes* Escape Sequence Data Mode Command DescriptionsCommand Default Description Echo enabled Previously stored in the Nvram with the AT&Zn=x commandHost in either online or off-line command mode Echo disabledSn=x ATI2DTE Numeric form CommandModem dials a telephone number touch tone dialing Numeric or verbose formDCD or Rlsd signal DisconnectingSubsequent commands to be ignored Resets the modem and recalls user profileTelephone Numbers AT&V0Active Profile Stored Profile= 0-9 a B C D # * T P R W @ S-register configurations into the Nvram user profile ‘n’Command to see the stored telephone number Select profileIndication Definition Command Default+EB 12/V.34 CRC generation and checking disabledNrzi encoding and decoding disabled Secondary channel operation, and vice versa+ETBM +ESR+ILRR=m +GMR+GSN +IFCIf +MS = ,0,, no alternative modulations will be available +MS command description+MA? will display a list of enabled alternative modulations = carrier,carrier,…carrier+MS=m See ‘m’ Carrier DescriptionBELL103 BELL212+PMHR +PHSW=+PMHF Value DescriptionDisable short Phase 1 and Short Phase Conjunction with the +PSS commandEnable Short Phase 1 and Short Phase Enable Short PhaseOperating Modes Mode Features+ES=1, 0 +ES=4, 4 +ES=3, 0 +ES=3, 2 44/V.42/V.42 bis and MNP Data Modem Command Descriptions+ES Settings Answer Modem Resulting +ES Connection Types\Bn \Kn Max string +DR=mDirection +DS=m+EFCS=m 3768+ER Lapm Display messages when +ER =Decimal value and the format is as follows +ER=m+ES=m Setting is ignored if origrqst=6Control during non-error control operation Non-error control operation+FMFR?/+FMI Fax Identity CommandsFax Class 1 Commands Fax Identity Command DescriptionsValue Modulation Speed bps Mod Selection TableClass 1 DTE-Generated Hdlc Frame Information AT+FTH=mod 30 Hdlc Frame Format+FCLASS Fax Mode Command Descriptions+FCLASS? +FRS=m +FRH=m+FTH=m IS-101 Voice Mode AT Commands Relay Control Voice Mode Command DescriptionsDtmf Detection Reporting +FLO=m +VDR=m See ‘m’ Enable report Function+VEM=m See ‘m’ Defaults = ‘C’, BB860980, BFE63883, BB863EE0Caller ID report Command Reserved Distinctive ringing All Event DescriptionHEX Digit Location EIGHT-DIGIT HEX Code B B 8 6 3 E EEX Value BIT Value Event +VIP Local telephone, or speaker128 Nominal transmit level +VLS=m Preassigned Voice I/O LabelsLabel Primitive Code Description Voice I/O Primitive CodesRelay/Playback Control +VSD=m See ‘m’ +VRXRange 4800, 7200, 8000, and 11025 samples/second +VSM=? command to obtain supported sampling rates141 AD3 3-bit Adaptive differential pulse code modulation +VSM=mCompression CmlSerial Hard DiskRange 5-255 units of 0.01 seconds Factory default is ‘0’100 Default value 1 second 100This sends a 500 ms period of silence Dual tones may be sent using the following format+VTS=m None Specified by +VTD=mCommand Default Description Register Command Descriptions S10 S16 Range Seconds Default 0 secondsEscape sequences S30 S21S22 118 S25Inactive state when Modem exits sleep mode whenever the host reads or writes toModem or when a ring signal is detected Sleep mode is disabled by setting S33 to ‘0’Tag Description Caller ID Tags for Formatted ReportingRing Uart Emulation in Intelsdb.VxD Uart Emulation in the Controllerless ModemRBR UartTHR Parallel Host Interface Uart Register Bit Assignments Modem Status Register MSR Uart Register DefinitionsScratch Register SCR Stack Bit Framing errorOE Overrun Error-Not supported Line Status Register LSRLine Control Register LCR IER Interrupt Enable registerProcedure is as follows Modem Control Register MCRBit Fifo Control Register FCRID1 ID0 Interrupt Identity Register IIRInterrupt Control Functions Dlab = Interrupt Enable Register IERID bit 2 for Fifo mode Transmitter Holding Register THRData Rate Divisor Number Divisor Latch Hex Receiver Buffer Register RBRDivisor Latch Registers DLM and DLL Programmable Data Rates102 Fifo Interrupt Mode OperationFifo Polled Mode Operation 16C550A Uart Fifo Operation536EX 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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