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Board Connections
Connector and Jumper Locations
The following diagram shows the location of all connectors and jumpers on the CM17320HR.
Future revisions of the CM17320HR may have cosmetic differences. For a description of each
jumper and connector, refer to the following sections.
User Oscillator, U3
The board has a position for a half size, 8-pin DIP, user oscillator. This device can be either a 5
volt or 3.3 volt oscillator and is configured with jumper JP27. Jumper JP2 selects either the
14.7456 MHz oscillator or the user oscillator. All serial ports use the same oscillator. U3 pin 1 is
PC/104-
Plus
ISA Bus
PC/104-
Plus
PCI Bus
JP2 – Oscillator Select
JP27 – User Oscillator Power
SW1 PCI
Slot Selector
CN4
1
st
serial port
CN7
4
th
serial port
CN6
3
rd
serial port
CN5
2
nd
serial port
CN8
5
th
serial port
CN9
6
th
serial port
CN10
7
th
serial port
CN11
8
th
serial port
U3 – User Oscillator
Serial Port
Signal Conditioning
(4 jumpers per port)
Mode A & B = Signaling Mode
R = RxD Termination
C = CTS Termination
Figure 2 – CM17320 Connector and jumper locations
