S-Registers

S-Registers

7

 

 

The 536EX chipsets provide direct access to the internal registers known as S-registers. The DTE uses S-registers to set up and check modem configurations. The contents of these registers can be changed using the ATSn=x command, where ‘n’ is the register number and ‘x’ is the value to be stored. The contents of the S-registers can be read using the ATSn? command. Most S-registers can be read from or written to; however, some S-registers (such as S14) are read-only. Writing to a read-only register may cause the modem to act improperly (that is, even though the contents of a read-only S-register may be changed using the ATSn=x command, changing the contents of the S- register does not normally configure the entire modem).

Reserved S-registers are used by the modem and provide no valuable information to the DTE. These registers have been removed from the following table. Reserved S-registers should never be written to, as they cause the modem to lock up.

Table 26. S-Register Command Descriptions

Command

Default

 

Description

 

 

 

 

 

Number of Rings to Auto-Answer On: Assigning S0 a value from 1 to 255 configures the

 

 

modem for auto-answer mode. The modem automatically goes off-hook and initiates a data

 

 

mode-answer mode handshake after detecting the specified number of rings. This S-register is

 

 

meant for data modem mode only and should be set to ‘0’ for fax and voice modes.

 

 

Range: 0–255 rings

S0

0

0

Auto-answer mode disabled

 

 

1–255

Auto-answer mode enabled

 

 

NOTES:

 

 

 

• If Caller ID is enabled (+VCID=m), then the modem only answers after the second ring

 

 

even if S0=1.

 

 

• Setting n > 2 causes the modem to answer on the nth ring signal.

 

 

Ring Count: Reports the number of ring signals detected by the modem. This register is cleared

S1

0

to zero if no new ring signals are detected within an 8 second time interval.

Range: 0–255 rings

 

 

 

 

Default: 0 rings

 

 

 

 

 

Escape Character: S2 specifies an ASCII value for the Hayes or TIES escape character. The

 

 

factory default is ‘+’ or ASCII decimal 43. The escape character may range between 0–127. Any

S2

43

value over 127 disables the escape sequence.

Range: 0–127

 

 

 

 

Default: 43 (‘+’)

 

 

 

 

 

Carriage Return Character: S3 specifies the AT command string terminator and modem

S3

13

response code terminator. The factory default is a <CR> or carriage return (ASCII decimal 13).

Range: 0–127

 

 

 

 

Default: 13 (carriage return)

 

 

 

 

 

Line Feed Character: S4 specifies the line feed character, which is used for verbose (text)

S4

10

modem result codes.

Range: 0–127

 

 

 

 

Default: 10 (line feed)

 

 

 

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

 

 

 

 

536EX Chipset Developer’s Manual

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Intel Confidential

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Intel 537EX manual Register Command Descriptions
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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.

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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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