Hardware Setup

SY-5EMA

Step 5. Set JP8,JP9,JP10 for SDRAM frequency

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

JP10

JP8

JP9

SDRAM Clock

Clock

Clock

 

 

 

 

66MHz

66MHz

1-2

2-3

2-3

66MHz

75MHz

75MHz

1-2

2-3

2-3

75MHz

83MHz

55MHz

2-3

1-2

1-2

55MHz

1-2

1-2

2-3

83MHz

 

 

95MHz

63.4MHz

2-3

1-2

1-2

63.4MHz

1-2

1-2

2-3

95MHz

 

 

100MHz

66MHz

2-3

1-2

1-2

66MHz

1-2

1-2

2-3

100MHz

 

 

112MHz

75MHz

2-3

1-2

1-2

75MHz

1-2

1-2

2-3

112MHz

 

 

124MHz

82.6MHz

2-3

1-2

1-2

82.6MHz

1-2

1-2

2-3

124MHz

 

 

Note: Use 8ns or faster SDRAM modules (PC100 compliant) when

SDRAM is set to run at the frequency of 95/100 MHz.

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SOYO SY-5EMA manual Set JP8,JP9,JP10 for Sdram frequency, Cpu Bus Agp Bus, JP8 JP9, Sdram Clock