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Hardware Setup
SY-5EHM/5EH5 V1.3
15
CPU FREQUENCY SETTING (SW1)
Configure the SW1 jumpers to the settings that match your CPU speed.
Refer to the following tables to set the Frequency Multiplier and Host Bus
Frequency of your CPU:
Frequency Multiplier Host Bus Frequency
Multiplier 1 2 3
Host Bus
Frequency
4 5 6
1.5/3.5x off off off 66MHz off on on
2.0x* on off off 75MHz off off on
2.5x on on off 83MHz off on off
3.0x off on off 95MHz on off off
4.0x on off on 97MHz on off on
4.5x on on on 100MHz off off off
5.0x off
on on
5.5x off off on
Example: If the working frequency of your CPU is 266MHz, then
select Multiplier=4.0x and Host Bus Frequency=66Mhz accordingly.
Also, as newer and higher frequency CPUs may not be listed in this
section, please refer to the tables
CPU Frequency Settings for Various
Processors on page 8 for complementary information.