Technical Product Specification

Intel® Server Board S1600JP TPS Product Architecture Overview
3.3.1.4.2 Rank Sparing Mode
In Rank Sparing Mode, one rank is a spare of the other ranks on the same channel. The spare
rank is held in reserve and is not available as system memory. The spare rank must have
identical or larger memory capacity than all the other ranks (sparing source ranks) on the same
channel. After sparing, the sparing source rank will be lost.
3.3.1.4.3 Mirrored Channel Mode
In Mirrored Channel Mode, the memory contents are mirrored between Channel 0 and Channel 2
and also between Channel 1 and Channel 3. As a result of the mirroring, the total physical
memory available to the system is half of what is populated. Mirrored Channel Mode requires
that Channel 0 and Channel 2, and Channel 1 and Channel 3 must be populated identically with
regards to size and organization. DIMM slot populations within a channel do not have to be
identical, but the same DIMM slot location across Channel 0 and Channel 2 and across Channel
1 and Channel 3 must be populated the same.
3.3.1.4.4 Lockstep Channel Mode
In Lockstep Channel Mode, each memory access is a 128-bit data access that spans Channel 0
and Channel 1, and Channel 2 and Channel 3. Lockstep Channel mode is the only RAS mode
that allows SDDC for x8 devices. Lockstep Channel Mode requires that Channel 0 and Channel
1, and Channel 2 and Channel 3 must be populated identically with regards to size and
organization. DIMM slot populations within a channel do not have to be identical, but the same
DIMM slot location across Channel 0 and Channel 1 and across Channel 2 and Channel 3 must
be populated the same.
3.3.2
Processor Intergrated I/O Module (I/O)
The processor’s integrated I/O module provides features traditionally supported through chipset
components. The integrated I/O module provides the following features:
 PCI Express* Interfaces: The integrated I/O module incorporates the PCI Express*
interface and supports up to 40 lanes of PCI Express*. Following are key attributes of
the PCI Express* interface:
o GenIII speeds at 8 GT/s (no 8b/10b encoding)
o X16 interface bifurcated down to two x8 or four x4 (or combinations)
o X8 interface bifurcated down to two x4
 DMI2 Interface to the PCH: The platform requires an interface to the legacy
Southbridge (PCH) which provides basic, legacy functions required for the server
platform and operating systems. Since only one PCH is required and allowed for the
system, any sockets which do not connect to PCH would use this port as a standard x4
PCI Express* 2.0 interface.
 Integrated IOAPIC: Provides support for PCI Express* devices implementing legacy
interrupt messages without interrupt sharing.
 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.
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