CPCI H.110 Backplane 23006 - 601
User Manual (Rev000)
Schroff GmbH, Okt. 2005; Document#: 73972-105, Rev.: 000
www.schroff.de
Page 1 of 2
Assembly Instructions & general Information
1.
Mechanical Mounting:
Attach the backplane through the mounting holes in at least every second
connector position at top and bottom using M2,5 screws and isolating washers.
2.
Chassis GND:
If noise reduction shall be achieved by connecting digital GND to Chassis GND, use
conductive washers instead of isolating ones. Spring washers are recommended instead of flat
washers. Creepage and clearance between screw and GND are in accordance with EN60950. It is
maintained by means of layout when using isolating washers.
3.
VI/O:
Check VI/O coding (blue/yellow keys on connector P1 from front) and VI/O (power) bridge on rear
side, default assembly is +5V (blue key at connector P1). If VI/O shall be set to 3,3V, use conversion kit
(order# 21101-658, included keys and tool) to change keys and move the bridge on rear. For position of
the bridge see drawing #1.
4.
Geographical Addressing
(GA) is set by default to start from number one from left (upper) position
within the chassis. If more than one backplane shall be assembled, a change of geographical addresses
can be made. Cut copper links in between SMD pads to open, apply and zero Ohm resistors to close.
Package size shall be 0603. Position is labelled "nGA[x]" where "n" stands for slot# , and "x" for
address#, see drawing.
5.
M66MHz Operation:
Schroff CPCI backplanes are designed in accordance with the requirements of
CPCI Core Specification, Revision 3.0 (PICMG 2.0 R3.0). Up to 5 Slots 66MHz operation is possible,
signal M66 is HIGH (open). Backplanes of higher slot count also fulfil the 66MHz operation
requirements in terms of clock trace length and skew, but M66 is tied to GND to disable 66MHz
operation by default. This link is made by a removable copper link. For test purposes it can be opened
and closed again by using a zero Ohm resistor of size 0603. For position of the link see drawing #1.
6.
Hot Swap:
Schroff CPCI backplanes fulfil the requirements for Basic Hot Swap of the Hot Swap
Specification PICMG 2.1 R2.0. The signal BD_SEL# is tied to GND by a removable copper link. It can
be replaced by a resistor-capacitor combination, both of package size 0603. Position is labelled "nB"
where "n" stands for slot# , see drawing #1.
7.
Termination:
If Termination is required, the termination board 23006-931 can be assembled (see
drawing for location). Termination is recommended in some very few cases if strong buffers are used
and only the system and adjacent slots are occupied and all others are empty.
8.
Assembling of Power Cables:
M4 cable lugs should be used to connect the cables from the PSU to
the powerbugs on the backplane. Maximum 2 cables are allowed per powerbug. Please assemble the
cable lugs with the flat side to the power bug to ensure the correct isolation distance between unisolated
part of the power cable and unisolated parts of the backplane.
Powerbug
Cable
Correct orientation
Powerbug
Cable
Wrong orientation
9.
Telecom Voltages:
The Telecom voltages are defined as secondary hazardous voltages and can
exceed 60V DC. Therefore, please take special care during installation and maintenance to disconnect
the voltages -Vbat, VbatRtn and VRG, VRGRtn first, before touching the unisolated parts of the
backplane.
ATTENTION:
Do not touch any unisolated part of the backplane when Telecom Voltages are connected.
IPMB Connector
Top view on connector
Pin
Signal
1
SCL
2
GND
3
SDA
4
Vsm
5
nc
Molex part#:
board connector: 53398-0590
free connector:
51021-0500
crimp contact:
50079-8100
(AWG 26-28, bag)
Vsm (Power) can be connected to +5V by
using zero Ohm resistor of size 0603 (R100)
