Intel BFCBASE Data Sheet - Page 94
Table 5-1., Signal Definitions Sheet 8 of 8
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Signal Definitions Table 5-1. Signal Definitions (Sheet 8 of 8) Name VID[6:1] VSS_SENSE VSS_SENSE2 VTT VTT_SEL Type O O P O Description VID[6:1] (Voltage ID) pins are used to support automatic selection of power supply voltages (VCC). These are CMOS signals that are driven by the processor and must be pulled up through a resistor. Conversely, the voltage regulator output must be disabled prior to the voltage supply for these pins becomes invalid. The VID pins are needed to support processor voltage specification variations. See Table 2-3 for definitions of these pins. The VR must supply the voltage that is requested by these pins, or disable itself. VSS_SENSE and VSS_SENSE2 provides an isolated, low impedance connection to the processor core power and ground. These signals should be used to provide feedback to the voltage regulator signals, which ensure the output voltage (that is, processor voltage) remains within specification. Please see the applicable platform design guide for implementation details. The FSB termination voltage input pins. Refer to Table 2-9 for further details. The VTT_SEL VTT_SEL is a signal is used no-connect on ttoheseIlnetcetl®thXeecoonr®rePctroVcTeTsvsoolrta7g2e00leSveelrifeosr the and processor. 7300 Series package. Notes § 94 Document Number: 318080-002