Technical product specification

Intel® Server Board S2600CP Functional Architecture Intel
®
Server Board S2600CP and Server System P4000CP TPS
Revision 1.8
Intel order number G26942-005
46
4.3.20.3 Non-Transparent Bridge
PCI Express* Non-Transparent Bridge (NTB) acts as a gateway that enables high performance,
low overhead communication between two intelligent subsystems, the local and the remote
subsystems. The NTB allows a local processor to independently configure and control the local
subsystem, provides isolation of the local host memory domain from the remote host memory
domain while enabling status and data exchange between the two domains.
The PCI Express* Port 3A of Intel
®
Xeon
®
Processor E5-2600 and E5-2600 v2 Product Families
can be configured to be a transparent bridge or a NTB with x4/x8 link width and
Gen1/Gen2/Gen3 link speed. Also this NTB port could be attached to another NTB port or PCI
Express* Root Port on another subsystem. NTB supports three 64bit BARs as configuration
space or prefetchable memory windows that can access both 32bit and 64bit address space
through 64bit BARs.
There are three NTB supported configuration:
 NTB Port to NTB Port Based Connection (Back-to-Back)
 NTB Port to Root Port Based Connection - Symmetric Configuration. The NTB port on
the first system is connected to the root port of the second. The second system’s NTB
port is connected to the root port on the first system making this a fully symmetric
configuration.
 NTB Port to Root Port Based Connection - Non-Symmetric Configuration. The root port
on the first system is connected to the NTB port of the second system. And it is not
necessary for the first system to be of the Intel
®
Xeon
®
Processor E5-2600 and E5-2600
v2 product family.
4.4 PCI Subsystem
The primary I/O buses for the Intel
®
Server Board S2600CP are PCI Express* Gen3 with six
independent PCI bus segments. The following tables list the characteristics of the PCI bus
segments.
Table 9. Intel
®
Server Board S2600CP PCI Bus Segment Characteristics
Voltage
Width
Speed
Type
PCI I/O Card Slots
3.3 V
X4 or x8
(with mux)
8 GB/S or
16 GB/S
PCI Express*
Gen3
X4 or x8 (with mux) PCI Express*
Gen3 throughput to Slot1 (x8
mechanically)
3.3 V
x8
16 GB/S
PCI Express*
Gen3
x8 PCI Express* Gen3 throughput
to Slot 2 (x8 mechanically)
3.3 V
x8
16 GB/S
PCI Express*
Gen3
x8 PCI Express* Gen3 throughput
to Slot 3 (x8 mechanically, open end
connector)
3.3 V
x8
16 GB/S
PCI Express*
Gen3
x8 PCI Express* Gen3 throughput
to Slot 4 (x8 mechanically)
3.3 V
x8
16 GB/S
PCI Express*
Gen3
x8 PCI Express* Gen3 throughput
to Slot 5 (x8 mechanically, open end
connector), from CPU2