Data Mode AT COMMANDS

Table 18. Data Mode Command Descriptions (Continued)

Command Default

Description

Modulation Selection: This command sets the preferred modulation, whether alternative modulations can be tried, and the transmit and receive DCE bit rates.

m = <carrier>,<automode>,<min rate>,<max rate>,<min rx rate>, <max rx rate>

Defaults: m = V92,1,0,0,0,0

+MS? will display the current +MS parameter settings

+MS=? will display the +MS parameter settings supported by the modem

<carrier> specifies the preferred modulation. The following table contains the modulations supported.

 

<carrier>

Description

 

BELL103

Bell 103 300bps (FSK)

 

BELL212

Bell 212A (DPSK)

 

V21

V.21

300bps (FSK)

 

V22

V.22

1200bps (QAM)

 

V22B

V.22 bis 1200 or 2400bps (QAM)

 

V23C

V.23

1200bps forward and 75bsp reverse channel (FSK)

 

V32

V.32

4800 or 9600bps (QAM) or 9600bps (TCM)

 

V32B

V.32 bis 4800 or 9600bps (QAM) or7200, 9600, 12000 or 14400bsp (TCM)

 

V34

V.34

2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400, 28800,

 

 

31200 or 33600bps

 

V90

V.90 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400, 28800, 31200

 

 

or 33600 bps on the transmit channel and 28000, 29333, 30666, 32000, 33333, 34666,

 

 

36000, 37333, 38666, 40000, 41333, 42666, 44000, 45333, 46666, 48000, 49333, 50666,

 

 

52000, 53333, 54666 or 56000 bps (PCM) on the receive channel

 

V92

V.92

24000, 25333, 26666, 28000, 29333, 30666, 32000, 33333, 34666, 36000, 37333,

 

 

38666, 40000, 41333, 42666, 44000, 45333, 46666 and 48000 bps on the transmit channel

+MS=m

see ‘m’

and 28000, 29333, 30667, 32000, 33333, 34667, 36000, 37333, 38667, 40000, 41333,

42667, 44000, 45333, 46667, 48000, 49333, 50667,52000, 53333, 54667 or 56000 bps

 

 

 

 

(PCM) on the receive channel

<automode> enables or disable automatic modulation negotiation. Automatic modulation negotiation allows the modem to connect with an alternative modulation to the preferred modulation. Alternative to the preferred modulations are specified by the +MA command. The +MA parameters are reset to all modulations supported by the modem below the preferred modulation whenever the +MS=<carrier> changes the preferred modulation.

Range: 0, 1

Default: 1

<automode> = 0 Disable automatic modulation negotiation

<automode> = 1 Enable automatic modulation negotiation

<min rate> and <min rx rate> specifies the lowest bit rate, in decimal units of bits/s, that may be established on the DCE. If 0, they are determined by the modulation selected by <carrier>, <automode> and the +MA command. These values are reset to 0 whenever +MS=<carrier> changes the preferred modulation. <min rx rate> is only used for modulations that support unequal minimum bit rate limits for the transmit and receive channel like V.23 and V.90 and is used to specify limits for the receive channel as distinct from the transmit channel.

Range: 0 and the DCE bps given in the <carrier> description table above

Default: 0

<max rate> and <max rx rate> specifies the highest bit rate, in decimal units of bits/s, that may be established on the DCE. If 0, they are determined by the modulation selected by <carrier>. These values are reset to 0 whenever the +MS=<carrier> changes the preferred modulation. <max rx rate> is only used for modulations that support unequal maximum bit rate limits for the transmit and receive channel like V.23 and V.90 and is used to specify limits for the receive channel as distinct from the transmit channel.

Range: 0 and the DCE bps given in the <carrier> description table above

Default: 0

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

536EX Chipset Developer’s Manual

53

Intel Confidential

Page 52 Page 54
Page 53
Image 53
Intel 537EX manual Carrier Description, BELL103, BELL212, +MS=m See ‘m’
Page 52 Page 54

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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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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