Introduction

When the controllerless chipsets are used with MS-DOS* applications, however, a UART emulation is required. Intel provides an additional driver called Intelsdb.VxD, which includes a UART emulation. Please refer to Section 9.1, “UART Emulation in the Controllerless Modem” on page 92 for an explanation of the 536EX UART emulation. The Intelsdb.VxD driver interacts directly with the VCOMM.VxD driver using the Win16 and Win32 Communication APIs.

Figure 2. VxD Mini Port Driver Block Diagram

NON-SYSTEM

 

 

VIRTUAL MACHINE

SYSTEM VIRTUAL MACHINE

MS-DOS SHELL APPLICATION

OR DRIVER

 

 

MS-DOS

WINDOWS

APPLICATION

APPLICATION

 

TAPI

Win 16

 

Unimodem

COMM.DRV

Intelsdb.VXD

VCOMM.VXD

 

HaM Port Driver

 

Interrupt Services

 

Chipset Hardware

1.2V.90/V.92 and V.34 Data Modes

The 536EX chipset defaults to the V.90 or V.92 mode depending on the driver version. The V.90/ V.92 mode allows receive data rates of up to 56,000 kbps over the PSTN (public switched telephone network) only in connections with equipment-compatible ISPs (Internet Service Providers); however, FCC regulations limit receive speeds to 53,333 kbps due to excessive power demands at higher speeds. In modem-to-modem connections, V.90/V.92 mode falls back to V.34 mode in both the transmit and receive directions. The chipsets implement all data rates and modulation schemes for ITU-T (International Telecommunications Union-Telecommunications) standards V.34, V.32 bis, V.32, V.22 bis, V.22, V.21, Bell 212A, and Bell 103.

536EX Chipset Developer’s Manual

9

Intel Confidential

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Intel 537EX manual V.90/V.92 and V.34 Data Modes, Tapi, Unimodem, Intelsdb.VXD
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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.

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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