Datasheet

Introduction
Intel® Xeon® Processor D-1500 Product Family 27
Datasheet - Volume 1 of 4: Integrated Platform Controller Hub
March 2015
1.2.1 Capability Overview
The following sub-sections provide an overview of Intel® Xeon® Processor D-1500
Product Family’s capabilities.
PCI Express* Interface
Intel® Xeon® Processor D-1500 Product Family provides up to 8 PCI Express Root
Ports, supporting the PCI Express Base Specification, Revision 2.0. Each Root Port x1
lane supports up to 5 Gb/s bandwidth in each direction (10 GB/s concurrent). PCI
Express Root Ports 1–4 or Ports 5–8 can independently be configured to support
multiple port width configurations. See Section 1.3 for details on feature availability.
Serial ATA (SATA) Controller
Intel® Xeon® Processor D-1500 Product Family has two integrated SATA host
controllers that support independent DMA operation on up to six ports and support data
transfer rates of up to 6.0 GB/s on all ports. The SATA controller contains two modes of
operation – a legacy mode using I/O space, and an AHCI mode using memory space.
Software that uses legacy mode will not have AHCI capabilities.
Intel® Xeon® Processor D-1500 Product Family supports the Serial ATA Specification,
Revision 3.0. Intel® Xeon® Processor D-1500 Product Family also supports several
optional sections of the Serial ATA II: Extensions to Serial ATA 1.0 Specification,
Revision 1.0 (AHCI support is required for some elements).
See Section 1.3 for details on feature availability.
AHCI
Intel® Xeon® Processor D-1500 Product Family provides hardware support for
Advanced Host Controller Interface (AHCI), a standardized programming interface for
SATA host controllers. Platforms supporting AHCI may take advantage of performance
features such as no master/slave designation for SATA devices – each device is treated
as a master – and hardware-assisted native command queuing. AHCI also provides
usability enhancements, such as Hot-Plug. AHCI requires appropriate software support
(such as, an AHCI driver) and for some features, hardware support in the SATA device
or additional platform hardware. See Section 1.3 for details on feature availability.
Low Pin Count (LPC) Interface
Intel® Xeon® Processor D-1500 Product Family implements an LPC Interface as
described in the LPC 1.1 Specification. The Low Pin Count (LPC) bridge function of
Intel® Xeon® Processor D-1500 Product Family is mapped as PCI D31:F0 and supports
a memory size up to 8 MB, two master/DMA devices, interrupt controllers, timers,
power management, system management, Super IO, and RTC.
Serial Peripheral Interface (SPI)
In addition to the standard Dual Output Fast Read mode, the SPI interface in Intel®
Xeon® Processor D-1500 Product Family supports new Dual IO Fast Read, Quad IO Fast
Read and Quad Output Fast Read. To enable the new Quad IO operation modes, all data
transfer signals in the interface are bidirectional and two new signals (SPI_IO2 and
SPI_IO3) have been added to the basic four-wire interface: Clock, Master Out Slave In
(MOSI), Master In Slave Out (MISO) and active-low chip selects (CS#). Intel® Xeon®
Processor D-1500 Product Family supports three chip selects: SPI_CS0# and