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
As a stuffing option, the CC3-CAJUN can be equipped with an ordinary HD D-Sub 15-lead
female connector (VGA style). This connector is suitable for analog signals only, so the PanelLink
transmitter is not stuffed with this option. Nevertheless also most flat-panel displays can be
attached to the D-Sub connector with only minor impact on the image quality.
Independent from the video connector actually in use, DVI or VGA, the VESA DDC 2B standard
is supported. This is a two-wire serial bus (clock, data), which is controlled by the GMCH and
allows to read out important parameters, e.g. the maximum allowable resolution, from the
attached monitor. In addition, DDC Power (+5V) is delivered to either connector. Resettable
fuses are stuffed to protect the board from an external short-circuit condition (0.75A for DVI, 2
x 0.75A for VGA).
Graphics drivers for the i815 GMCH can be downloaded from the Intel website, if required.
Real-Time Clock
The CC3-CAJUN has a time-of-day clock and 100-year calendar, integrated into the ICH2. A
battery on the board keeps the clock current when the computer is turned off. The CC3 uses a
Vanadium-Pentoxide-Lithium rechargeable battery, giving an autonomy of more than 80 days
when fully loaded after 24 hours. The cell is free of memory effects and withstands deep
discharging. Under normal conditions, replacement should be superfluous during lifetime of the
board. The RTC registers can be manually reset by the jumper JRTC.
Universal Serial Bus (USB)
The CC3-CAJUN is provided with two USB 1.1 ports. One USB I/F is routed to a front panel
connector, while the other is optionally available for rear I/O across the J2/P2 CompactPCI
connector. When using both ports, you can connect a maximum of two USB peripheral devices
directly to the CC3 without an external hub. To attach more devices, get an external hub
attached to one of the CC3 USB ports. Both, the front panel USB connector and the rear I/O USB
interface can source up to 0.5A/5V to external devices, over-current protected by an electronic
switch. Both USB controllers are integrated into the i82801 ICH2.
RS-232E Serial Port
The CC3-CAJUN is provided with an on-board EIA-232E compatible transceiver, connected to a
UART (universal asynchronous receiver transmitter), which is contained in the 8761 LPC I/O chip
(see next paragraph). The transceiver is ESD protected and supports a minimum data rate of
230kbps. Due to limited space in the front panel, a RJ45 jack is used for this COM port. An
adapter (available from EKF) may be helpful to emulate the PC-style 9-position D-Sub connector
(signal RI = Ring Indicator not supported). Usage of the RS-232 front panel connector requires
that the jumper J-COM on the CC3-CAJUN is set in order to enable the transceiver. However, if
rear I/O was chosen for the COM port, J-COM must be removed (instead enable the alternate
transceiver on the CCY-RIO rear I/O transition module).