Intel 830 manual THERMTRIP# Signal, Tcontrol and Fan Speed Reduction, Thermal Diode

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Thermal Specifications and Design Considerations

5.2.5THERMTRIP# Signal

Regardless of whether or not the Thermal Monitor feature is enabled, in the event of a catastrophic cooling failure, the processor will automatically shut down when the silicon has reached an elevated temperature (refer to the THERMTRIP# definition in Table 4-3). At this point, the FSB signal THERMTRIP# will go active and stay active as described in Table 4-3. THERMTRIP# activation is independent of processor activity and does not generate any bus cycles.

5.2.6TCONTROL and Fan Speed Reduction

TCONTROL is a temperature specification based on a temperature reading from the thermal diode. The value for TCONTROL will be calibrated in manufacturing and configured for each processor. When TDIODE is above TCONTROL, then TC must be at or below TC-MAXas defined by the thermal profile in Table 5-2and Figure 5-1; otherwise, the processor temperature can be maintained at TCONTROL (or lower) as measured by the thermal diode.

The purpose of this feature is to support acoustic optimization through fan speed control.

5.2.7Thermal Diode

The processor incorporates an on-die thermal diode. A thermal sensor located on the system board may monitor the die temperature of the processor for thermal management/long term die temperature change purposes. Table 5-4and Table 5-5provide the diode parameter and interface specifications. This thermal diode is separate from the Thermal Monitor’s thermal sensor and cannot be used to predict the behavior of the Thermal Monitor.

Table 5-4. Thermal Diode Parameters

Symbol

Parameter

Min

Typ

Max

Unit

Notes

 

 

 

 

 

 

 

IFW

Forward Bias Current

11

 

187

µA

1

 

 

n

Diode Ideality Factor

1.0083

1.011

1.023

 

2, 3, 4, 5

 

 

 

 

 

 

 

RT

Series Resistance

3.242

3.33

3.594

Ω

2, 3, 6

 

NOTES:

1.Intel does not support or recommend operation of the thermal diode under reverse bias.

2.Characterized at 75 °C.

3.Not 100% tested. Specified by design characterization.

4.The ideality factor, n, represents the deviation from ideal diode behavior as exemplified by the diode equation:

IFW = IS * (e qVD/nkT –1)

where IS = saturation current, q = electronic charge, VD = voltage across the diode, k = Boltzmann Constant, and T = absolute temperature (Kelvin).

5.Devices found to have an ideality factor of 1.0183 to 1.023 will create a temperature error approximately 2 °C higher than the actual temperature. To minimize any potential acoustic impact of this temperature error, TCONTROL will be increased by 2 °C on these parts.

6.The series resistance, RT, is provided to allow for a more accurate measurement of the thermal diode temperature. RT, as defined, includes the pins of the processor but does not include any socket resistance or board trace resistance be- tween the socket and the external remote diode thermal sensor. RT can be used by remote diode thermal sensors with automatic series resistance cancellation to calibrate out this error term. Another application is that a temperature offset can be manually calculated and programmed into an offset register in the remote diode thermal sensors as exemplified by the equation:

Terror = [RT * (N-1) * IFWmin] / [nk/q * ln N]

wherecharge.Terror = sensor temperature error, N = sensor current ratio, k = Boltzmann Constant, q = electronic

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Datasheet

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Contents Datasheet Intel Pentium D Processor 800Δ SequenceContents Contents Halt and Enhanced Halt Powerdown States Figures Tables Revision Description Date Revision HistoryInitial release May Contents Intel Pentium D Processor 800 Sequence Features Contents Introduction Terminology Processor Packaging TerminologyReferences ReferencesIntroduction Decoupling Guidelines Electrical SpecificationsPower and Ground Lands VCC DecouplingVoltage Identification FSB DecouplingVoltage Identification Definition VID5 VID4 VID3 VID2 VID1 VID0Reserved, Unused, FC and Testhi Signals Symbol Parameter Min Max Unit Voltage and Current SpecificationsDC Voltage and Current Specifications Absolute Maximum and Minimum RatingsVID Voltage and Current SpecificationsSymbol Parameter Min Typ Max Unit Vttout ICC065 Icc a Voltage Deviation from VID Setting V 1, 2000 072Icc a 013 033 000 019007 026 020 040Icc a Magnitude of V CC overshoot above VID 050 VCC Overshoot SpecificationVCC Overshoot Specifications Time duration of V CC overshoot above VIDFSB Signal Groups Signaling SpecificationsDie Voltage Validation Signals FSB Signal GroupsSignal Group Signals Associated StrobeSignal Characteristics 2 GTL+ Asynchronous SignalsSignal Reference Voltages 11. GTL+ Signal Group DC Specifications FSB DC Specifications10. BSEL20 and VID50 Signal Group DC Specifications Symbol Parameter Max Unit12. Pwrgood Input and TAP Signal Group DC Specifications 13. GTL+ Asynchronous Signal Group DC SpecificationsSymbol Parameter Min Typ Max Units 14. Vttpwrgd DC Specifications15. Bootselect and MSID10 DC Specifications 16. GTL+ Bus Voltage Definitions17. Core Frequency to FSB Multiplier Configuration Clock SpecificationsFSB Frequency Select Signals FSB Clock BCLK10 and Processor ClockingFSB Frequency Phase Lock Loop PLL and Filter18. BSEL20 Frequency Table for BCLK10 133 MHzPhase Lock Loop PLL Filter Requirements Package Mechanical Specifications Package Mechanical DrawingProcessor Package Drawing Package Mechanical Specifications Package Mechanical Specifications Processor Component Keep-Out Zones Package Loading SpecificationsProcessor Loading Specifications Package Handling GuidelinesProcessor Materials Package Insertion SpecificationsProcessor Mass Specification Processor MarkingsProcessor Top-Side Marking Example Intel Pentium D Processor Processor Land Coordinates Processor Land Coordinates, Top ViewLand Listing and Signal Descriptions Processor Land AssignmentsLandout Diagram Top View Left Side Landout Diagram Top View Right Side Land Name Signal Buffer Direction Type Alphabetical Land AssignmentsDBI0# GTLREF1 VCC AC8 VCC AK8 Vccmb AN5 VSS AA3 VSS AJ4 E11 Power/Other Vssmb AN6 Land Land Name Signal Buffer Direction Type Numerical Land AssignmentReserved ADS# Reserved DEFER# J12 N30 AA1 Vttoutright AD4 VSS AH1 VSS AK2 VSS AN1 VSS Request Signals Alphabetical Signals ReferenceSignal Description Sheet 1 Name Type DescriptionSignal Description Sheet 2 NameBus Signal Data Bus Signals Signal Description Sheet 3Data Group Signal Description Sheet 4 Signal Description Sheet 5 RESET# Signal Description Sheet 6Pwrgood Signal Description Sheet 7 Signal Description Sheet 8 Land Listing and Signal Descriptions Processor Thermal Specifications Thermal Specifications and Design ConsiderationsThermal Specifications Minimum Maximum T C C Processor Thermal SpecificationsGHz Power Maximum T C Thermal Profile for the Pentium D Processor with PRB=1Power Thermal Profile for the Pentium D Processor with PRB=0Thermal Metrology Processor Thermal FeaturesThermal Monitor On-Demand Mode PROCHOT# SignalFORCEPR# Signal Pin Thermal Diode THERMTRIP# SignalTcontrol and Fan Speed Reduction Thermal Diode ParametersThermal Diode Interface Signal Name Land Number Signal DescriptionDiode anode Thermal Specifications and Design Considerations Clock Control and Low Power States FeaturesPower-On Configuration Options Power-On Configuration Option SignalsHalt and Enhanced Halt Powerdown States Normal StateEnhanced Halt Powerdown State Stop-Grant StateEnhanced Halt Snoop or Halt Snoop State, Grant Snoop State Enhanced Intel SpeedStep TechnologyBoxed Processor Specifications Mechanical Representation of the Boxed ProcessorMechanical Specifications Boxed Processor Cooling Solution DimensionsFan Heatsink Power Supply Boxed Processor Fan Heatsink WeightElectrical Requirements Description Min Typ Max Unit Fan Heatsink Power and Signal Specifications+12 V 12 volt fan power supply Sense frequencyThermal Specifications Boxed Processor Cooling RequirementsBoxed Processor Specifications Boxed Processor Fan Boxed Processor Fan Speed Variable Speed FanFan operates at its highest speed Boxed Processor Specifications Mechanical Representation of the Boxed Processor Cooling Solution Dimensions Assembly Stack Including the Support and Retention Module Boxed Processor Support and Retention Module SRMSense Sense frequency ControlDatasheet 101 Boxed Processor TMA Set Points Boxed Processor Boxed Processor Fan SpeedDatasheet 103 104 Mechanical Considerations Debug Tools SpecificationsLogic Analyzer Interface LAI Electrical Considerations106

830 specifications

The Intel 830 chipset, introduced in the early 2000s, marked a significant evolution in Intel's chipset architecture for desktop and mobile computing. Known for its support of the Pentium 4 processors, the 830 chipset was tailored for both performance and stability, making it an appealing choice for OEMs and enthusiasts alike.

One of the standout features of the Intel 830 chipset is its support for DDR SDRAM, providing a much-needed boost in memory bandwidth compared to its predecessors. With dual-channel memory support, the chipset could utilize two memory modules simultaneously, which effectively doubled the data transfer rate and enhanced overall system performance. This made the Intel 830 particularly beneficial for applications requiring high memory throughput, such as multimedia processing and gaming.

Another important characteristic of the Intel 830 was its integrated graphics support, featuring Intel's Extreme Graphics technology. This integration allowed for decent graphics performance without the need for a dedicated GPU, making it suitable for budget systems and everyday computing tasks. However, for power users and gaming enthusiasts, the option to incorporate a discrete graphics card remained available through the provided PCI Express x16 slot.

The Intel 830 chipset also boasted advanced I/O capabilities, including support for USB 2.0, which provided faster data transfer rates compared to USB 1.1, and enhanced IDE interfaces for connecting hard drives and optical devices. With its Hyper-Threading technology support, the chipset allowed for improved multitasking efficiency, enabling a single processor to execute multiple threads simultaneously, a feature that was particularly beneficial in server environments and complex computing tasks.

In terms of connectivity, the Intel 830 supported multiple bus interfaces, including PCI Express and AGP, thereby enabling users to expand their systems with various add-on cards. This flexibility contributed to the chipset's longevity in the marketplace, as it catered to a wide range of user needs from light computing to intensive gaming and content creation.

In summary, the Intel 830 chipset combined enhanced memory capabilities, integrated graphics performance, robust I/O features, and flexible expansion options, making it a versatile choice for various computing environments during its time. It played a key role in shaping the landscape of early 2000s computing, paving the way for future advancements in chipset technology. Its legacy continues to influence modern computing architectures, illustrating the lasting impact of Intel’s innovative design principles.