Jumper Settings; How To Set Jumpers; Cpu Clock Ratio Setting (Sw1) - Advantech PCA-6176 Series User Manual

1.8

Jumper Settings

This section provides instructions on how to configure your card by
setting jumpers. It also includes the card's default settings and your
options for each jumper.

1.8.1 How to set jumpers

You configure your card to match the needs of your application by
setting jumpers. A jumper is the simplest kind of electric switch. It
consists of two metal pins and a small metal clip (often protected by a
plastic cover) that slides over the pins to connect them. To "close" a
jumper you connect the pins with the clip. To "open" a jumper you
remove the clip. Sometimes a jumper consists of a set of three pins,
labeled 1, 2 and 3. In this case you connect either pins 1 and 2,
or 2 and 3.
A pair of needle-nose pliers may be useful when setting jumpers.

1.8.2 CPU clock ratio setting (SW1)

You must configure your PCA-6176 CPU card to the frequency of
your Intel Pentium
PCA-6176 SW1 is equpped to use Pentium processors with speeds of
233, 266, 300, 333, 350, 400, 450, and 500 MHz. Configure your
PCA-6176 as follows:
Table 1-3: CPU clock ratio setting (SW1)
CPU freq.
233 MHz
266 MHz
300 MHz
333 MHz
366 MHz
350 MHz
400 MHz
450 MHz
500 MHz
550 MHz
Note:
PCA-6176 User's Manual
12
®
II/III processor by setting jumper SW1. The
Ratio Bus clk
3.5 66 MHz
4 66 MHz
4.5 66 MHz
5 66 MHz
5.5 66 MHz
3.5 100 MHz
4 100 MHz
4.5 100 MHz
5 100 MHz
5.5 100 MHz
SW1-4 is factory reserved.
SW1-1 SW1-2
ON ON
OFF OFF
OFF OFF
OFF ON
OFF ON
ON ON
OFF OFF
OFF OFF
OFF ON
OFF ON
SW1-3
ON
OFF
ON
OFF
ON
ON
OFF
ON
OFF
ON