S-Registers

Table 26. S-Register Command Descriptions (Continued)

Command

Default

 

 

Description

 

 

 

 

 

Bit-Mapped Options: S21 is a read-only register that indicates AT command settings.

 

 

Bit 0

 

Reserved

 

 

Bit 1

 

Reserved

 

 

Bit 2

 

Reserved

 

 

Bits 4–3

00

&D0 is selected

 

 

 

01

&D1 is selected

S21

48

 

10*

&D2 is selected

 

11

&D3 is selected

 

 

 

 

 

Bit 5

0

&C0 is selected

 

 

 

1*

&C1 is selected

 

 

Bit 6

0*

&S0 is selected

 

 

 

1

&S1 is selected

 

 

Bit 7

0*

Y0 is selected

 

 

 

1

Y1 is selected

 

 

 

 

 

Bit-Mapped Options: S22 is a read-only register that indicates AT command settings.

 

 

Bits 1–0

00

L0 is selected

 

 

 

01

L1 is selected

 

 

 

10*

L2 is selected

 

 

 

11

L3 is selected

 

 

Bits 3–2

00

M0 is selected

 

 

 

01*

M1 is selected

 

 

 

10

M2 is selected

S22

118

 

11

M3 is selected

Bits 6–4

000

X0 is selected

 

 

 

 

 

001

Reserved

 

 

 

010

Reserved

 

 

 

011

Reserved

 

 

 

100

X1 is selected

 

 

 

101

X2 is selected

 

 

 

110

X3 is selected

 

 

 

111*

X4 is selected

 

 

Bit 7

0*

&P0 is selected

 

 

 

1

&P1 is selected

 

 

 

 

 

Detect DTR Change: S25 defines the minimum amount of time that DTR has to remain off (that

 

 

is, on-to-off-to-on transitions) before the modem performs the function specified by &Dn

S25

5

command. A change in DTR that persists for a shorter time than the value specified in S25 is

 

 

ignored by the modem (see the &Dn command).

 

 

Range: 0–255 (1/100 of a second)

 

 

 

 

 

Disconnect Inactivity Timer: This S-register sets the length of time (in minutes) that the

 

 

modem stays online/off-hook before disconnecting when no data is being transmitted or

 

 

received. In data and fax modes, any data transmitted or received between the DTE-DCE

S30

0

interface resets the timer. In all other modes (except Telephone-Emulation mode), any data

transmitted resets the timer. In Telephone-Emulation mode, S30 is ignored (that is, the modem

 

 

does not automatically hang up the line after a given time delay).

 

 

Range: 0–255 minutes

 

 

0

Disabled

 

 

 

 

 

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

88

536EX Chipset Developer’s Manual

Intel Confidential

Page 87 Page 89
Page 88
Image 88
Intel 537EX manual S21, S22 118, S25, S30
Page 87 Page 89

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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