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2.3 Jumper Settings
We designed the PCM-3753I with ease-of-use in mind. It is a "plug and
play" card, i.e. the system BIOS assigns the system resources such as
base address and interrupt automatically. The following section describes
how to configure the card. You may want to refer to the figure below for
help in identifying card components.
Figure 2.1: Location of Connectors and Jumpers
Jumper Settings to Set Ports as Input or Output by Software
When the two pins of jumpers JPA0, JPB0, JPC0L, JPC0H, JPA1, JPB1,
JPC1L, JPC1H, JPA2, JPB2, JPC2L, JPC2H, JPA3, JPB3, JPC3L or
JPC3H are not shorted (i.e., by setting a jumper), the corresponding ports
are set to be configurable as input or output ports by software. (JPA0
means jumper for port A0, JPB0 means jumper for port B0, etc. See
Table 2-1) If jumper JP1 is not enabled (i.e., by shorting the upper two
pins of JP1), all ports configured by software are automatially set as input
ports during system startup a reset, with a default signal level of logic
1(high). (But see Jumper JP1 discussion below.)
9
Chapter 2
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