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SY-5EMA+ V1.0 Quick Start Guide
12
Installation
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
Clock
AGP BUS
Clock
PCI Clock JP10 JP8 JP9
SDRAM
Clock
66MHz 66MHz 33MHz 1-2 2-3 2-3 66MHz
75MHz 75MHz 37.5MHz 1-2 2-3 2-3 75MHz
2-3 1-2 1-2 55MHz
83MHz 55MHz 27.5MHz
1-2 1-2 2-3 83MHz
2-3 1-2 1-2 63.4MHz
95MHz 63.4MHz 31.7MHz
1-2 1-2 2-3 95MHz
2-3 1-2 1-2 66MHz
100MHz 66MHz 33MHz
1-2 1-2 2-3 100MHz
2-3 1-2 1-2 75MHz
112MHz 75MHz 37.5MHz
1-2 1-2 2-3 112MHz
2-3 1-2 1-2 82.6MHz
124MHz 82.6MHz 41.3MHz
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.