Tau-PCI/32 Adapter, User Manual
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Copyright © 2004-2007 Cronyx
Not all of the 32 transceiver timeslots are used in the unstructured bit rate slow-down
modes. The control modules are assigned to timeslots that should be used, and their
number must correspond to the speed selected. The indicated timeslots are disconnected
from the cross connector, and are only used by the unstructured mode modules.
The activation of the unstructured mode results in the data bus of the corresponding
E1 interface switching from the cross connector to the control module. The exchange of
Sa bits and CAS signaling does not make sense any longer, this data will be ignored by
the E1 interface.
The timeslots that are not used by the unstructured mode of the E1 interface can be
used randomly. Such uses include interacting with the other E1 interface, both in the
structured and unstructured modes.
The transceiver, the cross connector and other functional parts of the adapter are
always synchronized from the same source. The reception path of either E1 interface or
the internal adapter clock can be used as such a source. If clock signals from the external
source are lost, the adapter always automatically switches to the internal clock.
Only the basic operation modes needed to construct packet transmission networks are
implemented in the supplied drivers. To use the other features of the Tau-PCI/32 adapter,
you may have to use the Driver Development Kit (DDK).
For additional information, please refer to the support service and DDK
documentation.
Adapter Installation
Before installation, make sure that the power supply unit of your computer has
enough power to support the Tau-PCI/32 adapter.
Make sure your computer is switched off! Most of the modern computers must
be disconnected from external power supply, otherwise, the PCI bus and some
other components would be live!
Remove the cabinet cover, find vacant PCI slot and remove the related plug on
the rear side of the chassis;
Insert the adapter into the PCI slot up to the stop and screw it tight to the rear
side of the chassis;
Connect E1 lines to the DB-15 connector (see the "List of E1 Interface
Signals" section). While soldering, make sure the residual flux did not
contaminate the contact surfaces;
Replace the cabinet cover;
Connect the communications equipment using appropriate cables (not
included);
