Intel® IQ31244 Customer Reference Board

3.4SDRAM EEPROM

The EEPROM located on the SDRAM module contains identification and configuration information. Start-up code must read this information on power-up and must properly configure the Intel XScale® processor to the SDRAM type.

3.5Temperature Sensors

The National Semiconductor* LM75 temperature sensors have over-temperature trip points that trigger an interrupt when crossed. The sensors are placed on the board at U8 and U35. They share an interrupt line to the processor. Polling the two devices is required to determine which device triggered the interrupt. The sensors are placed in interrupt mode by the Breeze* initialization code (for more information, see the National Semiconductor website at http://www.national.com). The default over-temperature point is 80 °C. The sensors can be read for a temperature reading at any time. Reading after an interrupt clears the interrupt. The sensor does not interrupt again until the temperature drops below the hysteresis value (default is 75 °C) and rises again beyond the trip point. Consult the LM75 datasheet for more details on programming the temperature sensors.

3.6Reset Supervisor

The STMicroelectronics* M41ST85W supervisor chip is connected to the Intel® 80321 I/O Processor through its I2C bus interface. The supervisor controller uses a 512-bit, static CMOS SRAM organized as 64 words by 8 bits wide. This controller is driven by a 32.768 KHz clock. It features the time-of-day clock/calendar function, status/control of alarm, watchdog timer, and power-fail voltage monitoring (used by Ethernet LAN Power Good). The eight clock address locations contain the century, year, month, date, day, hour, minute, second, and tenths/hundredths of a second in 24-hour Binary Code Decimal (BCD) format. Corrections for 28-, 29- (leap year— valid until year 2100), 30- and 31-day months are made automatically.

The supervisor chip is supplied with a SNAPHAT package, which has a crystal and a battery for backup during power failures. The SNAPHAT comes in two battery sizes (48 or 120 mAh).

20

User’s Manual

Page 19 Page 21
Page 20
Image 20
Intel IQ31244 user manual Sdram Eeprom, Temperature Sensors Reset Supervisor
Page 19 Page 21

IQ31244 specifications

The Intel IQ31244 represents a notable innovation in the realm of embedded processing solutions, tailored to meet the demands of contemporary applications in various industries. This processor, part of Intel's robust lineup, is engineered with a focus on delivering performance, efficiency, and reliability.

At the core of the IQ31244 lies a powerful multi-core architecture, which enables simultaneous processing tasks. This architecture is designed to optimize workload distribution, thereby enhancing overall system performance. With multiple execution cores, the IQ31244 is capable of handling demanding applications such as industrial automation, communications, and advanced embedded systems.

One of the standout features of the Intel IQ31244 is its support for Intel’s advanced security technologies. Hardware-based security measures are integrated into the processor, providing robust protection against potential vulnerabilities. This is particularly crucial in environments where data integrity and system security are paramount.

The IQ31244 also boasts a high level of energy efficiency, making it suitable for applications where power consumption is a critical concern. Intel has implemented various power management techniques in this processor, allowing it to dynamically adjust performance states based on workload demands. This adaptive capability ensures that performance is maximized while minimizing energy consumption, which is ideal for battery-operated or energy-sensitive devices.

Additionally, the Intel IQ31244 is equipped with advanced connectivity options, facilitating seamless integration into modern IoT ecosystems. With support for multiple communication protocols, including Ethernet, USB, and serial interfaces, this processor can connect to a diverse range of peripherals and network systems, enhancing its versatility for various applications.

The processor also incorporates Intel's latest advancements in graphic processing capabilities. With an integrated graphics engine, it offers improved visual performance for applications that require rich graphical interfaces, making it a suitable choice for embedded systems displaying complex data visualizations.

In summary, the Intel IQ31244 stands out as a high-performance, energy-efficient solution designed for a wide array of embedded applications. Its multi-core architecture, robust security features, advanced connectivity options, and integrated graphics capabilities make it a formidable choice for industries such as automation, telecommunications, and IoT, meeting the evolving needs of modern technology.
Top Page Image Contents