Intel IQ31244 user manual Sdram Eeprom, Temperature Sensors Reset Supervisor

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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).

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User’s Manual

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Contents Intel IQ31244 Customer Reference Board User’s ManualUser’s Manual Contents Figures Tables001 Initial release Revision HistoryDate Revision Description This page Intentionally Left Blank Introduction 415 Feature Description FeaturesFeatures and Descriptions Electrical Specifications Environmental SpecificationsIntel IQ31244 Customer Reference Board Power Requirements Environmental SpecificationsCharacteristic Description Physical CharacteristicsPhysical Characteristics Physical Configuration Component Layout Diagram not to scaleDocument Manufacturer Reference InformationDocuments and Manufacturers PCI-X Interface Primary PCI BusPriority Description PAL Arbitration CircuitRotation Scheme of the PAL Arbitration Circuit Intel 80321 I/O Processor Block Diagram Intel 80321 I/O ProcessorSignal InterruptsInterruptConnections Intel80321 I/O Processor Intel 31154 133 MHz PCI Bridge Gpio Pin AssignmentsGpio Signal Definitions General-Purpose I/O UnitI2C Bus Units 2C Device AddressesTemperature Sensors Reset Supervisor Sdram EepromSupported Sdram Configurations Type Size Class Total Memory SizePin Symbol Gigabit Ethernet InterfaceIntel 82546EB Dual-Port Gigabit Ethernet Controller Gigabit Ethernet Port AssignmentSata Interface Sata Port AssignmentSata Port Pin Assignment PinPin Signal Sata Jtag InterfaceIntel 31244 PCI-X to Serial ATA Controller Sata Jtag Emulator Pin AssignmentActivity LEDs Sata LED HeaderCompactFlash Peripheral Bus Interface UnitFlash ROM Rotary Switch Console Serial Port ConnectorRead-Only Rotary Switch Console Serial PortSignal Pin Jtag Emulator SupportHex Display LEDsATX Power Connector ATX Power Connector J1Jumper Options Configure DescriptionJumpers

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.
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