Kontron CPCI Generic backplane - Manual (Page 20)

General CPCI Backplane
Page 6 © 2002 PEP Modular Computers GmbH ID 24229, Rev. 01
2.2 System Slot Board Clock Skew
This is the clock skew that may be attributed to the onboard routing differences (if any) of all of
the PCI clocks as well as the skew specification for the type of integrated circuit driver used for
clock distribution. The onboard clock routing is designed to complement the propagation
delays of distributing the clock to a backplane and still meet overall system skew require-
ments.
3. Backplane Interfaces
3.1 Line Connection
Both AC and DC power supply to most backplanes are connected by means of 3-pole Mate-
N-Lok connectors marked ”LINE1” and, on some 6U backplanes, “LINE2” on the backplane
reverse side.
Figure 4: Orientation and Pinouts of AC/DC Line Connectors
3.2 Power Supply Connectors
The AC or DC input voltages to the power supply unit and the Vo1...Vo4 output voltages from
the power supply unit to the backplane are connected via a power supply connector comply-
ing with one of the below described specifications.
Attention!
AC/DC power supply units must be installed only with backplanes/sys-
tems connected to an AC power line and DC/DC power supply units
with backplanes/systems connected only to a DC power line.
Failure to comply with this warning will result in damage to your equip-
ment.
Note...
The term ”power supply connector” is used both for the connectors
receiving the backplanes’ power supply and the mating output connec-
tors of the power supply units.
2
3
1
Table 2: Pinouts of AC/DC Line Connector
Pin AC DC
1 N - DC supply
2 L + DC supply
3 PE PE