SY-5EMA+Quick Start Guide

JP8 is used to indicate the frequency of the CPU bus clock to the ETEQ chipset.

JP9 and JP10 are used to determine that the SDRAM is running at the frequency of the CPU bus clock or the AGP clock.

CPU BUS

AGP BUS

PCI Clock

JP10

JP8

JP9

SDRAM

 

Clock

Clock

Clock

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66MHz

66MHz

33MHz

1-2

2-3

2-3

66MHz

 

75MHz

75MHz

37.5MHz

1-2

2-3

2-3

75MHz

 

83MHz

55MHz

27.5MHz

2-3

1-2

1-2

55MHz

 

1-2

1-2

2-3

83MHz

 

 

 

 

 

95MHz

63.4MHz

31.7MHz

2-3

1-2

1-2

63.4MHz

 

1-2

1-2

2-3

95MHz

Installation

 

 

 

100MHz

66MHz

33MHz

2-3

1-2

1-2

66MHz

 

1-2

1-2

2-3

100MHz

 

 

 

 

 

112MHz

75MHz

37.5MHz

2-3

1-2

1-2

75MHz

 

1-2

1-2

2-3

112MHz

 

 

 

 

 

124MHz

82.6MHz

41.3MHz

2-3

1-2

1-2

82.6MHz

 

1-2

1-2

2-3

124MHz

 

 

 

 

 

Note: Use 8ns or faster SDRAM modules (for PC100) when SDRAM is set to run at

the frequency of 95/100MHz.

Step 4. Configure Memory

Your board comes with three DIMM sockets, providing support for up to 768MB of main memory using DIMM modules from 8MB to 256MB. For 66MHz host bus CPUs use 12ns or faster DIMM modules; for 83MHz host bus CPUs use 8ns modules.

Memory Configuration Table

MEMORY

 

DIMM Banks

 

CONFIGURATION

DIMM 1

DIMM 2

DIMM 3

 

RAM Type

FPM/EDO/SDRAM

FPM/EDO/SDRAM

FPM/EDO/SDRAM

 

 

 

 

Single RAM

8/16/32/64/128/256

8/16/32/64/128/256

8/16/32/64/128/256

Module Size (MB)

 

 

 

Note: Do not use FPM or EDO type of SIMM/DIMM if you already use SDRAM.

 

 

 

 

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SOYO SY-5EMA+ quick start PCI Clock JP10, Configure Memory