| Graphics-Class PCI Express Backplane |
The OSS-EBP-2009 is a graphics-class
backplane that supports a x16 PCI Express (PCIe) link from
a graphics-class PICMG 1.3 compatible System Host Board to
the backplane’s PCIE2 slot. High-end PCI Express video
and graphics cards are supported with this x16 PCIe electrical
link. |
| SHB Slot |
Accepts an SHB Express (PICMG® 1.3) compliant
(graphics-class) processor. |
| PCI Express Serial Slots |
PCIE2 is a x16 slot connected to the SHB with
a x16 PCI Express link. PCIE1 is a x8 mechanical slot driven
by a x1 PCI Express link from the PCIeS expansion slot. In
order to use the PCIE1 slot a OSS-ACC-IO expansion board
must be used on The OSS-SHB's. The OSS-ACC-IO enables communication
between the SHB and the PCI Express option card in slot PCIE1. |
| Optional USB 2.0 Interfaces |
The SHB Express specification defines optional
I/O routings from the SHB to the backplane. The OSS-EBP-2009
takes advantage of this new specification feature by providing
two USB 2.0 headers capable of providing up to four USB 2.0
backplane ports. Each OSS System Host Board supports two
USB port connections to a backplane. A factory installed
option provides two additional USB port connections. |
| Optional Ethernet Interfaces |
Trenton’s BPG6544 backplane supports
the optional Ethernet routing feature of the SHB Express
(PICMG 1.3) specification. Two 10/100/1000Base-T Ethernet
RJ-45 connectors are available for use on the backplane.
Data communication performance of the backplane’s Ethernet
interfaces depends on the Ethernet controller hardware and
configuration on the system host board. Consult your SHB
Ethernet interface implementation method for details. The
SHB OPTIONAL BACKPLANE I/O SUPPORT TABLE explains the backplane
I/O capabilities supported by Trenton’s PICMG 1.3 System
Host Boards. |
| Power Connectors |
The OSS-EBP-2009 backplane is available with
a power connector suitable for use with either an ATX or
EPS power supply. |
| Extended-Current Terminal Blocks |
Three extended-current terminal blocks provide
additional power capacity for power-intensive applications
-- up to 80 Amps of +12V, 120 Amps of +3.3V and 80 Amps of
+5V. |
| Power Indicators |
Surface-mount LEDs provide a convenient visual
check for +5V, -5V, +5V AUX,+12V, -12V and +3.3V power connection
and status. CAUTION: Never install or remove the SHB or any
option card from the BPG6544 backplane if the +5V AUX LED
is GREEN. If the system appears to be off and the+5V AUX
LED is GREEN then you need to remove or turn-off the incoming
power to the system power supply. |
| Auxiliary Power Connector |
The +12V power connector on the BPG6544 routes
auxiliary power to the SHB’s edge connectors. This
new capability of PICMG 1.3 compliant SHBs and backplanes
eliminates the need for auxiliary power connections on the
system host board. |
| Printed Circuit Layers |
The backplane is a six-layer, .080” thick
board with three separate signal layers: +5V/+12V, +3.3V
and ground. Multi-layer backplane construction provides excellent
noise immunity. |
| PCI-X Parallel Bus Slots |
The five PCI-X slots on the BPG6544 are connected
to the SHB via a x4 PCI Express link that drives a PCI Express-to-PCI-X
bridge chip. The bridge chip provides a 64-bit/66MHz PCI-X
channel to support slots A1 through A4 and a 64-bit/133MHz
PCI-X channel that supports slot B1. PCI-X and universal
(i.e. 5V/3.3V combo or 3.3V only) PCI option cards may be
used and the bridge chips will throttle-down the bus interface
speeds to match any universal PCI or PCI-X card with an interface
bus speed less than 66MHz or 133MHz. |
| PCI AND ISA Parallel Bus Slots |
The OSS-EBP-2009 supports the optional SHB
edge connector D. Edge connector D provides a 32-bit/33MHz
PCI interface to drive slots SLTC1 and SLTC2. This PCI Interface
also connects to a PCI-to-ISA bridge chip to support ISA
slots SLTD1 and SLTD2. These slots support legacy ISA and
32-bit/33MHz PCI cards to provide a simple, cost-effective
transition to the PCI Express system architecture. |
| Connecting Power |
The combination of new power supply technologies,
soft-power control signals available via the Advanced Configuration
and Power Interface (ACPI) now supported by PICMG 1.3 SHBs
and auxiliary power connectors on PICMG 1.3 backplanes that
deliver all of the SHBs power to the edge connectors are
requiring a different approach to connecting system power. |
| |
Auxiliary power connectors on the backplane
are provided to help improve system Mean Time To Repair (MTTR).
All power can be delivered to the SHB via the board’s
edge connectors. Trenton’s PICMG 1.3 SHBs and backplane
SHB edge connector slots have ample power pins available
to meet the power demands of high-performance, performance-based
processor SHBs like the Trenton T4L. The ATX/EPS and +12V
power connectors on the BPG6544 backplane also have an ample
number of power pins available to meet these demands. The
system designer needs to be aware of the potential power
demands of the entire system including the particular SHB
to ensure that both the power supply and the power connectors
in the cable harness can safely deliver the necessary power
to drive the entire system. |
