Intel T1700 Ficha de datos descargar pdf (Pagina 91)

Datasheet 91

Thermal Specifications and Design Considerations

When PROCHOT# is driven by an external agent, if only Intel Thermal Monitor 1 is

enabled on both cores, then both processor cores will have their core clocks modulated.

If Intel Thermal Monitor 2 is enabled on both cores, then both processor cores will

enter the lowest programmed Intel Thermal Monitor 2 performance state. It should be

noted that Force Intel Thermal Monitor 1 on Intel Thermal Monitor 2, enabled via BIOS,

does not have any effect on external PROCHOT#. If PROCHOT# is driven by an external

agent when Intel Thermal Monitor 1, Intel Thermal Monitor 2, and Force Intel Thermal

Monitor 1 on Intel Thermal Monitor 2 are all enabled, then the processor will still apply

only Intel Thermal Monitor 2.

PROCHOT# may be used for thermal protection of voltage regulators (VR). System

designers can create a circuit to monitor the VR temperature and activate the TCC

when the temperature limit of the VR is reached. By asserting PROCHOT# (pulled-low)

and activating the TCC, the VR will cool down as a result of reduced processor power

consumption. Bi-directional PROCHOT# can allow VR thermal designs to target

maximum sustained current instead of maximum current. Systems should still provide

proper cooling for the VR and rely on bi-directional PROCHOT# only as a backup in case

of system cooling failure. The system thermal design should allow the power delivery

circuitry to operate within its temperature specification even while the processor is

operating at its TDP. With a properly designed and characterized thermal solution, it is

anticipated that bi-directional PROCHOT# would only be asserted for very short periods

of time when running the most power intensive applications. An under-designed

thermal solution that is not able to prevent excessive assertion of PROCHOT# in the

anticipated ambient environment may cause a noticeable performance loss.

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