Intel US15W Power Management, Power Measurement Support, Power Measurement Resistor, Equation

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Power Management

3Power Management

3.1Power Measurement Support

Power measurement resistors are provided to measure the power on many of the subsystems.

Table 5. Power Measurement Resistor

Feature

Value

 

 

Tolerance

1%

 

 

Value

10 mΩ

 

 

NOTE: Intel recommends that larger (~10 mΩ) resistors be stuffed for greater accuracy.

Power on a particular subsystem is calculated using the following formula:

Equation 1.

P = V 2

R

R = value of the sense resistor (typically 0.01 Ω)

V = the voltage difference measured across the sense resistor.

Use a high precision digital multi-meter tool such as the Agilent 34401A digital multi- meter. Refer to Table 6 for a comparison of a high-precision, digital multi-meter (Agilent 34401A) versus a precision, digital multi-meter (Fluke 79).

Table 6. Digital Multi-Meter Comparison

Example System

Sense Resistor Value

0.01 Ω

 

 

Voltage Difference Across Resistor

1.492 mV (149.2 mA)

 

 

Calculated Power

0.223 mW

 

 

 

 

User’s Manual

21

Document Number: 320264

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Contents July Document # Revision User’s ManualUser’s Manual Document Number Contents Power Up Tables FiguresDocument Revision Description Revision HistoryInitial release Release for public postingAbout the Development Kit IntroductionTerm Definition TerminologyAdditional Technical Support Technical SupportRelated Documents Product LiteratureIntel Literature Centers Related DocumentsCrown Beach Board Crown Beach Board Block DiagramCrown Beach Board Top View Getting StartedCrown Beach Feature Set Summary Major FeaturesFeature Crown Beach Board Comments Implementation OverviewSDIO/MMC Processor Support Processor Voltage RegulatorsSMC/KBC Intel SCH Chipset Subsystem DescriptionsSystem Memory DisplayPCI Express* Slots Manufacturer Size Resolution Back Aspect Part#Soft Audio/Soft Modem Crown Beach Supported Lvds DisplaysPata Storage USB ConnectorsLPC Slot System Management Controller SMC/Keyboard Controller KBCTrusted Platform Module TPM Header EFI Firmware Hub FWH12 SD/SDIO/MMC ClocksIn-Target Probe ITP and Debug Support Power Supply SolutionBoard Size Board TechnologyPower Measurement Support Power ManagementPower Measurement Resistor EquationCrown Beach Voltage Rails Agilent 34401A 6½ digitSch Component Voltage Supply Rail Ref Des Resistor Lvdsddc DDR2VRLvdsbcklt LvdsvdlKeyboard +V12SCPU Vcore+V12S Crown Beach Board Features ConnectorsReference Board Summary Ref Des Description Back Panel ConnectorsConfiguration Jumpers/Switches Configuration SettingsBbprog Configuration Jumper/Switches SettingsPSON# Bsel Jumper Settings Bsel Jumper SettingsManual VID Support for CPU ProcessorCrown Beach Manual VID Power On and Reset Push ButtonsLEDs Crown Beach LEDsFunction Reference Designator Mini Card a connector J7H1 is enabled by default PCI Express* X1 Slots and Mini Card ConnectorsPCI Express* Slot 1 Board Rework to Enable Functionality Rework Impacted components CommentsMini Card B Board Rework to Enable Functionality Mini Card B connector J2G1 is disabled by defaultH8S Jtag Programming Headers 1 H8 In-System ProgrammingReference Board Summary Uart Connector H8 Programming JumpersJtag Required Peripherals Quick StartSamsung 15 inch 381.00 mm Panel Graphics Assembly Lvds PanelCrown Beach Board Lvds Cable Connected to the Crown Beach Board Power Up Powering Up the Board EFI Firmware Updates Mott Canyon 4 Interposer Card Appendix a Daughter and Plug-In CardsMott Canyon 4 Interposer Card Jumper SettingsDescription Default Setting Optional Setting Reference Mott Canyon 4 Interposer Card Configuration Jumper/SwitchesFirmware Configuration Voltage Identification Definition Appendix B Intel MVP-6 VID CodesVID6 VID5 VID4 VID3 VID2 VID1 VID0 VCC 5625 External Feature Location Front of Chassis Appendix C External FeaturesRear Chassis View with Board Installed External Feature Location Rear of Chassis

US15W specifications

The Intel US15W is an embedded chipset designed to meet the demands of ultra-low power computing environments. Released in 2008, this chipset was aimed at small form-factor devices such as netbooks, thin clients, and embedded systems. With its unique blend of features, the US15W has played a crucial role in the evolution of low-power computing technologies.

One of the standout characteristics of the US15W chipset is its integration of a single-chip design, which significantly reduces the overall footprint of the system. This is particularly advantageous for manufacturers looking to create compact devices without compromising on performance. The chipset integrates the Intel Atom processor, which is known for its efficient power consumption and solid performance for lightweight applications. The combination provides a balance between energy efficiency and processing capability, making it suitable for various applications ranging from internet browsing to multimedia playback.

Another major feature of the Intel US15W is its support for Intel's Graphics Media Accelerator 500, which enhances visual performance by providing hardware acceleration for graphics rendering. This capability enables smoother video playback and improved graphical user interfaces, which are essential for user-centric devices.

The US15W chipset also supports various connectivity options, including USB 2.0 and Serial ATA (SATA) interfaces. This flexibility allows for ease in peripheral connectivity and storage solutions, accommodating the needs of embedded applications and consumer electronics alike. Moreover, the chipset supports Intel's Enhanced SpeedStep technology, a power management feature that adjusts processor voltage and frequency based on workload, helping to extend battery life in portable devices.

In terms of memory support, the Intel US15W can handle up to 2GB of DDR2 RAM, which is adequate for many embedded computing tasks. The chipset is designed to facilitate efficient thermal management, which is crucial in maintaining long-lasting performance in compact and thermally constrained environments.

Overall, the Intel US15W chipset exemplifies the shift towards energy-efficient, compact computing solutions. Its innovative integration of features, support for modern graphics, and robust connectivity options make it a significant player in the embedded chipset market. As technology continues to evolve, the US15W remains a testament to Intel's commitment to providing high-performance solutions that meet the demands of modern computing without sacrificing power efficiency.