Vterm/Vdd Power Sequencing Requirement; Figure 176. Customer Reference Board Layout Example (Signal 2 - Layer 4); Figure 177. 1.8 V And 2.5 V Power Sequence (Schottky Diode) - Intel Pentium 4 Design Manual

Power Distribution Guidelines
Figure 176. Customer Reference Board Layout Example (Signal 2 – Layer 4)
12.4

Vterm/Vdd Power Sequencing Requirement

Power to the RDRAM device termination resistors (Vterm) must follow the power to the RDRAM
device Core. A Schottky diode can be placed between the 1.8 V and 2.5 V to ensure this power-up
sequence.

Figure 177. 1.8 V and 2.5 V Power Sequence (Schottky Diode)

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Intel Pentium 4 Processor / Intel
1.8V
2.5V
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850 Chipset Family Platform Design Guide
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