Data Mode AT COMMANDS

Local Modem (or Test Modem)

AT&F &W<CR>

Returns the modem to the factory defaults.

AT S18=20 &T8

Causes the modem to start local analog loopback with self-test for 20

 

seconds.

OK

After starting analog loopback, the modem goes back to command

 

mode.

AT

The modem responds to new commands.

OK

 

000

After 20 seconds, the modem stops analog loopback, sends

OK

an error count to the DTE, and enters command mode.

AT S18=0 &T8

Causes the modem to start local analog loopback with self-test, which

 

is only terminated by AT&T0 or ATH.

OK

After starting analog loopback, the modem goes back to command

 

mode.

AT

The modem responds to new commands.

OK

 

AT&T0

After receiving AT&T0 or ATH, the modem stops analog

000

loopback, sends an error count to the DTE, and enters

OK

command mode.

3.10AT Escape Sequences

The 56K family provides the industry-standard Time Independent Escape Sequence (TIES). The DTE sends the escape sequence to return the modem to command state while in the online data state (that is, connected to another modem) or in diagnostic mode (&Tn commands).

Intel also makes the HayesEscape Sequence available to customers; however, see the following statement regarding licensing requirements.

Licensing Requirements for Hayes Escape Sequence

The Intel chipsets are manufactured with TIES as the default setting. It is Hayes’ position that you must either have or obtain a valid license from Hayes Microcomputer Products, Inc., of Norcross, Georgia, before producing modem systems that use the Hayes Escape Sequence.

Intel accepts no responsibility and does not indemnify nor in any way provide protection for patent or possible patent violations to its customers or users of its products.

3.10.1Time-Independent Escape Sequence

The TIES (Time-Independent Escape Sequence), implemented with +++AT, was developed by a group of modem manufacturers as an alternative to the Hayes Escape Sequence. TIES was designed for compatibility with existing communication software written for the Hayes Escape Sequence.

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536EX Chipset Developer’s Manual

Intel Confidential

Page 37 Page 39
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Intel 537EX manual AT Escape Sequences, Time-Independent Escape Sequence, Licensing Requirements for Hayes Escape Sequence
Page 37 Page 39

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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