Connect Tech Titan/cPCI - Manual (Page 15)

Titan/cPCI User’s Manual, Connect Tech Inc.
10 Revision 1.01
Configuring the Titan/cPCI
Compact Peripheral Component Interconnect (cPCI) bus architecture offers a feature called Plug
and Play (sometimes referred to as PnP). This feature automatically identifies and configures
installed devices each time the system boots.
In most CompactPCI compliant computers, the system BIOS will automatically detect and
configure the Titan/cPCI adapter. However in some cases a system BIOS cannot resolve all of
the requests for resources in the system. This often occurs with the assignment of system
interrupts, since this is usually the scarcest resource.
If this occurs, the driver will signal that a given resource has not been assigned, which requires
the user to assign system resources manually. After reboot, determine with the BIOS setup
utility what resources have been assigned to the cPCI devices and then do manual assignments
of free resources to your cPCI device. Reboot your system. If the BIOS cannot find a suitable
configuration please contact Connect Tech Technical Support.
Important Configuration Note:
The Titan/cPCI and the Titan/cPCI with front LEDs must be configured
for RS-485 to operate with the Titan Rear I/O Opto. This is configured
via jumper blocks on the Rear I/O Opto. You must remove ALL
jumpers on the front I/O Titan/cPCI when you are using the Rear
I/O Opto.
Baud Rate Selection
Titan/cPCI adapters offer ideal solutions for applications requiring serial communications up to
1.8432 Mbps. Baud rates are software selectable; please refer to
Software Installation for
configuring the baud rates under certain operating systems.
RS-422/485 Line Interface
The Titan/cPCI adapters and Rear I/O Opto adapters come with a jumper selectable RS-422/485
electrical line interface for each port. The RS-422/485 electrical interface is a reliable high-
speed serial link that offers superior noise immunity and multi-drop network connectivity. The
RS-485 electrical interface is also a superset of the RS-422 electrical interface. Titan/cPCI and
Titan/cPCI Rear I/O Opto adapters offer full RS-422/485 support in hardware. The following
modes are supported:
Full Duplex Mode
In this mode, TxD & RxD are active all the time. This mode is typically used in point to point
situations much like RS-232. Please refer to
Appendix D: RS-422/485 Line Interface for the
jumper settings associated with this function.
Half Duplex Mode
In this mode the TxD line driver is enabled only when data is transmitted and RxD is disabled
when data is being transmitted. This mode is typically used in either point to point "2 wire"
connections OR in multi-drop "2 wire" bussed connections. Please refer to
Appendix D:
RS-422/485 Line Interface for the jumper settings associated with this function.