STPCI2GDYI(2002) 데이터 시트보기 (PDF) - STMicroelectronics

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STPCI2GDYI
(Rev.:2002)

X86 Core PC Compatible System-on-Chip for Terminals

STMicroelectronics 

DESIGN GUIDELINES

Figure 6-25. IBIS Simulation for on-board SDRAM / 90MHz

(V)

MCLKI

3

MCLKI

MCLKx

2

2.0 V

833ps

1

0.8 V

791ps

Time

Figure 6-26. Recommended topology for DIMM (IBIS model)

Buffer out

Buffer out

22 Ohms

18 Ohms

3000 mils

2000 mils

Track impedance= 75 Ohms

Trace thickness = 0.72 mil

Trace width = 4 to 8 mils

MCLKI

DIMM

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Issue 1.0 - July 24, 2002

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