Voltage Regulator-Down (VRD) 10.1 Design Guide

Processor Vcc Requirements
R
18 Design Guide
Table 2-5: Socket Load Line WindowSocket Load Line Window for Design Configurations
775_VR_CONFIG_05A and 775_VR_CONFIG_05B
Icc Maximum Typical Minimum
0 A 0.000 V -0.019 V -0.038 V
20 A -0.020 V -0.039 V -0.058 V
40 A -0.040 V -0.059 V -0.078 V
60 A -0.060 V -0.079 V -0.098 V
80 A -0.080 V -0.099 V -0.118 V
100 A -0.100 V -0.119 V -0.138 V
120 A -0.120 V -0.139 V -0.158 V
125 A -0.125 V -0.144 V -0.163 V
NOTE: 1: Presented as a deviation from VID
2: Socket load line Slope = 1.0mOhms, TOB Tolerance = +/-19mV
3: Consult Table 1 for VR configuration parameter details
Table 2-5. Socket Load Line Reference Lands
Orientation Land
North Vcc U27
North Vss V27
East Vcc AJ14
East Vss AJ15
SE Vcc Jumper AN5
SE Vss Jumper AN6