25
[
Note 4
]
User define external clock and multiplier factor:
User Define
External Clock:
66MHz 75MHz
83MHz
Multiplier Factor:
You can choose the following multiplier factors:
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
However, differences will exist because of the various brands
and types available.
Normally, we do not recommend that you use the “User
Define” option to setup CPU speed and multiplier factor. This
option is for setup of future CPUs whose specifications are
still unknown. The specifications of all present CPUs are
included in the default settings. Unless you are very familiar
with all CPU parameters, it is very easy to make mistakes
when you define by yourself the external clock and the
multiplier factor.
Turbo Frequency:
This item will only be displayed if your CPU
external clock supports Turbo mode.
The Turbo mode allows you to speed up the
external clock by approximately 2.5%. This
feature is used to verify the design flexibility. It is
a very important tool for test units to verify CPU
stability. Do not use this feature.
