Introduction

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This developer’s manual describes the software interface for Intel® 536EX (controllerless and controller) chipset solutions. The controllerless-based solutions include the 536EP for PCI and Mini-PCI. Refer to the chipset datasheets for the detailed chipset descriptions (public order numbers 273503-001, 273xxx-001, 273xxx-001, 273xxx-001, and 273xxx-001).

The controllerless-based chipset, as the name implies, does not have a dedicated hardware controller. The controller functions are executed by the CPU. This developer’s manual includes the AT command sets for data, fax, and voice and the UART interface and emulation. Like the earlier solutions from Intel, the 536EX chipsets support a variety of applications without the need of additional firmware development. Note, the supported AT commands are firmware or driver version dependent.

1.1Controllerless Modem Driver Overview

1.1.1Windows* Millennium Edition (Windows Me), Windows 2000, Windows XP, and Windows NT* 4

The controllerless modem chipsets are integrated into the Microsoft* Windows* Me, Windows 2000, Windows XP, and Windows NT* 4 operating systems via proprietary Intel® Windows Driver Model (WDM) modem drivers. These drivers are fully plug and play capable and conform to all Microsoft WHQL certification requirements.

The functional block diagram in Figure 1 shows the common WDM architecture for the Microsoft’s operating systems supporting common WDM drivers model.

User-mode application, via special Windows API (FILE, TAPI, UNIMODEM), can access a virtual COM port provided by the Intel WDM driver. The data flow is converted inside the driver in accordance with some compression and a channel level protocol and passed to the DSP. The control flow follows the common Microsoft WDM driver model. The Intel WDM driver is installed as a stack of filter drivers below the system modem.sys driver.

536EX Chipset Developer’s Manual

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Intel Confidential

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Intel 537EX manual Introduction, Controllerless Modem Driver Overview
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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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