User guide

User Guide CC3-CAJUN • Low Power CompactPCI CPU
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EKF Elektronik GmbH • Philipp-Reis-Str. 4 • 59065 Hamm • Germany
Tel. [phone] • Fax. [phone] • [e-mail] • www.ekf.com
Rear I/O Options
Optionally, the CC3-CAJUN can be used for rear I/O with respect to the following functions:
• Primary IDE
• USB Port 2
• Keyboard, Mouse
• COM1 (TTL Level)
•GPIOs
If attachment of IDE devices across the rear I/O path is chosen, the CC3-CAJUN on-board IDE
connector must be removed or at least left unused, in order to avoid a T-connection. The rear
I/O USB port is independent from the front panel USB connector by using its own controller
integrated into the ICH2, thus doubling the overall USB bandwidth available. Keyboard and
mouse as well as the serial interface and the GPIOs require the on-board SIO to be stuffed. The
rear I/O COM1 port does not include the physical transceiver (TTL level signals only), because the
CCY-RIO module is provided with its own circuitry - be sure to remove the jumper J-COM on the
CC3-CAJUN before enabling the serial interface transceiver on the rear I/O module. The GPIOs
are used as trigger signals in a PXI system, but can also be utilized for general applications in a
non-PXI environment. Each of the above functions can be activated individually (by appropriate
stuffing/removing of resistor networks).
Utilization of the CCY-RIO rear I/O transition module is bound to several preconditions, which
must be completely satisfied:
< The CC3 CPU card by default is suitable for a 64-bit CompactPCI backplane. However, the
J2/P2 pin assignments of a 64-bit CPCI backplane differ substantially from a CompactPCI
rear I/O backplane. Hence usage of the rear I/O features is available only as stuffing
options on the CC3 CPU board, which have to be ordered explicitly. Pull-up resistor
networks on the CPCI address/data lines AD33-AD63 and associated control signals must
be removed, and pass-through resistor networks for the required rear I/O signals have to
be filled on the CC3. Neither can these modifications be made afterwards on a CC3 64-
bit J2 CPU board by the user, nor by EKF, due to the technical effort needed and costs
incurred.
< The system in use must be equipped with a P2 CompactPCI rear I/O backplane. If the
system is provided with a P2 CompactPCI 64-bit backplane instead, several of the CC3
rear I/O signals will collide with the 64-bit address/data lines on the backplane, with
unpredictable results regarding the rear I/O signal integrity.
Please note, that EKF is not only a manufacturer of boards, but also has many years of
experience as a systems integrator. Please contact [e-mail] for a quotation on the complete
system, tailored to your individual needs.