Mobile Intel Pentium 4 Processor - M and Intel 845MP/MZ Chipset Platform Design Guide

Mobile Intel
®
Pentium
®
4 Processor-M and Intel
®
845MP/845MZ Chipset Platform
96 Design Guide
R
Figure 43. Intel 845MP/845MZ PLL1 Filter
V_1P5_CORE
MCH
PLL
L
VSSA1
(ball U17)
VCCA1
(ball T17)
C
Length A
Table 32. PLL1 Routing Guidelines
Parameter Routing Guidelines
Trace Width 5 mils
Trace Spacing 10 mils
Trace Length – A 1.5”
Capacitor – C 33 µF
Inductor – L 4.7 µH
Table 33. Recommended Inductor Components for MCH-M PLL Filter
Value Tolerance SRF Rated I DCR
4.7µH 10% 35 MHz 30 mA 0.56 Ω (1 Ω max)
4.7µH 10% 47 MHz 30 mA 0.7 Ω (±50%)
4.7µH 30% 35 MHz 30 mA 0.3 Ω max
Table 34. Recommended Capacitor Components for MCH-M PLL Filter
Value ESL ESR
33 µF 2.5 nH 0.225 Ω
33 µF 2.5 nH 0.2 Ω