Output Indicators

6Output Indicators

6.1Voltage Regulator Ready (VR_Ready) - REQUIRED

The VRM/EVRD VR_Ready signal is an output signal that indicates the start-up sequence is complete and the output voltage has moved to the programmed VID value. This signal will be used for start-up sequencing for other voltage regulators, clocks, and microprocessor reset. This signal is not a representation of the accuracy of the DC output to its VID value.

The platform VR_Ready signal(s) will be connected to logic to assert CPU or system PWRGD. The value of the resistor and the pull-up voltage will be determined by the circuitry on the baseboard that is receiving this signal. Typically a 1 kΩ pull to 3.3 V is used. This signal should not be de-asserted during dynamic VID operation. It should remain asserted during normal DC-DC operating conditions and only de-assert for fault shutdown conditions. It will be an open-collector/drain or equivalent signal. The pull-up resistor and voltage source will be located on the baseboard. Table 6-1shows the VR_Ready pin specification.

Table 6-1. VR_Ready Specifications

Symbol

Parameter

Min

Max

Units

 

 

 

 

 

IOL

Output Low Current

1

4

mA

VOH

Output High Voltage

0.8

3.465

V

VOL

Output Low Voltage

0

0.4

V

6.2Voltage Regulator Hot (VR_hot#) - PROPOSED

The VRM/EVRD VR_hot# signal is an output signal that is asserted low when a thermal event is detected in the converter. Assertion of this signal will be used by the system to minimize damage to the converter due to the thermal conditions. Table 6-2shows the VR_hot# signal specification. This signal will be an open-collector/drain or equivalent signal and needs to be pulled up to an appropriate voltage through a pull-up resistor on the baseboard. A typical implementation would be a 50 Ω ±5% resistor pulled up to

1.1V/1.2 V. For platforms using a voltage higher than 1.1 V /1.2 V, a voltage level translation is required. Processors do not tolerate such voltage levels directly. Consult the appropriate PDG.

Table 6-2. VR_hot# Specifications

Symbol

Parameter

Min

Max

Units

 

 

 

 

 

IOL

Output Low Current

19.9

30

mA

VOH

Output High Voltage

0.8

3.465

V

VOL

Output Low Voltage

0

0.4

V

Each customer is responsible for identifying maximum temperature specifications for all components in the VRM/EVRD design and ensuring that these specifications are not violated while continuously drawing specified Icc (TDC) levels. In the occurrence of a thermal event, a thermal sense circuit may assert the processor’s FORCEPR# signal immediately prior to exceeding maximum VRM, baseboard, and/or component thermal ratings to prevent heat damage. The assertion may be made through direct connection

315889-002

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Intel 315889-002 manual Output Indicators, Voltage Regulator Ready VRReady Required, Voltage Regulator Hot VRhot# Proposed

315889-002 specifications

The Intel 315889-002 is a highly regarded processor that has made significant contributions to the computing landscape. As part of Intel's dedicated line of CPUs, this model is engineered to deliver robust performance and efficiency for a range of applications, from personal computing to enterprise solutions. Features of the Intel 315889-002 include its multi-core architecture, which allows for better multitasking capabilities. With multiple cores working simultaneously, users can run multiple applications without experiencing noticeable lag, leading to a smoother overall experience.

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