ROCKY-3701 Socket 370 Celeron
TM
& Pentium III
9
2.2 Unpacking Precautions
Some components on ROCKY-3701 SBC are very sensitive to
static electric charges and can be damaged by a sudden rush of
power. To protect it from unintended damage, be sure to follow
these precautions:
Ground yourself to remove any static charge before touching your
ROCKY-3701 SBC. You can do it by using a grounded wrist strap
at all times or by frequently touching any conducting materials that
is connected to the ground.
Handle your ROCKY-3701 SBC by its edges. Don’t touch IC chips,
leads or circuitry if not necessary.
Do not plug any connector or jumper while the power is on.
Do not put your ROCKY-3701 SBC unprotected on a flat surface
because it has components on both sides.
ROCKY-3701 Socket 370 Celeron
TM
& Pentium III
10
FREQUENCY
2.3 Setting the CPU of ROCKY-3701
•
JP2 : CPU FREQUENCY SETTING
JP2
1-3 2-4
AUTO
ON
ON
Note: Auto-detect 66/100/133MHz FSB CPU.
•
JP15 : CPU TYPE SETTING
CPU TYPE.
JP15
CYRIX 1-2
INTEL
2-3
•
JP4 :
CPU MULTIPLIER SETTING
Ratio 1-2 3-4 5-6 7-8
3.0 x
ON
OFF
ON
ON
3.5
x ON OFF OFF ON
4.0
x OFF ON ON ON
4.5 x
OFF
ON
OFF
ON
5.0 x
OFF
OFF
ON
ON
5.5x OFF
OFF
OFF ON
6.0x
ON
ON
ON
OFF
6.5x ON ON
OFF
OFF
7.0x ON OFF ON OFF
7.5x ON OFF OFF OFF
8.0x OFF ON ON OFF
2.4 Watch-Dog Timer
The Watch-Dog Timer is enabled by reading port 443H. It
should be triggered before the time-out period ends, otherwise it
will assume the program operation is abnormal and will issue a
reset signal to reboot or activate NMI to CPU. The Watch-Dog
Timer is disable by reading port 043(843)H
.
•
JP14 : Watch-Dog Timer Type Setting
PIN NO.
DESCRIPTION
1-2 NMI
2-3
RESET
