User guide

User Guide CC8-BLUES • Multi-Processing CompactPCI CPU
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EKF Elektronik GmbH • Philipp-Reis-Str. 4 • 59065 HAMM • Germany
Tel. [phone] • Fax. [phone] • E-Mail [e-mail] • Internet http://www.ekf.de
IEEE 1394 / FireWire Connectors
Both 1394 receptacles are functionally equivalent and wired to a dual-port 1394 PHY, which is
operated as a hub with respect to the connectors. 1394 bus power is sourced by the CC8-BLUES
and electronically limited to ~0.5A in total. Use commercially available cable assemblies to
attach 1394 devices, which may have 4-position (without power distribution) or 6-position (with
power distribution) receptacles.
The 1394 connectors are protruding through the CC8-BLUES front panel. This allows for
snapping in a locking mechanism, which is part of special 1394 plugs for industrial use.
1394 (1 & 2)
1Bus Power
2GND
3TP B-
4TP B+
5TP A-
6TP A+
Avoid hot inserting of devices with high power-on current (>1A) across the 1394 cable. EKF has
found 1394 hard disk drives with a power-up current requirement beyond 1A, which may
trigger the CC8-BLUES on-board 12V power switch protection circuit while hot insertion. This
effect causes the board to be reset. As a workaround, power up such devices simultaneously
with the CC8-BLUES, or use an external power supply for the respective 1394 device.