Datasheet

Introduction
Intel® Xeon® Processor D-1500 Product Family 29
Datasheet - Volume 1 of 4: Integrated Platform Controller Hub
March 2015
Universal Serial Bus (USB) Controllers
Intel® Xeon® Processor D-1500 Product Family contains one eXtensible Host
Controller Interface (xHCI) controller and one Enhanced Host Controller Interface
(EHCI) controllers. The xHCI controller is mapped as PCI D20:F0 and it supports up to
4 USB 2.0 ports of which all 4 can be configured as SuperSpeed (USB 3.0) ports.
EHCI controller 1 (EHCI1) is located at D29:F0 and it supports up to 4 USB 2.0 ports.
One of the USB 2.0 ports in the EHCI controller can be used for a Debug Port (not
available through xHCI). 1.
See Section 1.3 for details on feature availability.
Gigabit Ethernet Controller
The Gigabit Ethernet Controller provides a system interface using a PCI function. The
controller provides a full memory-mapped or IO mapped interface along with a 64-bit
address master support for systems using more than 4 GB of physical memory and
DMA (Direct Memory Addressing) mechanisms for high performance data transfers. Its
bus master capabilities enable the component to process high-level commands and
perform multiple operations. This lowers processor utilization by off-loading
communication tasks from the processor. Two large configurable transmit and receive
FIFOs (up to 20 KB each) help prevent data underruns and overruns while waiting for
bus accesses. This enables the integrated LAN controller to transmit data with
minimum interframe spacing (IFS).
The LAN controller can operate at multiple speeds (10/100/1000 MB/s) and in either
full duplex or half duplex mode. In full duplex mode the LAN controller adheres with the
IEEE 802.3x Flow Control Specification. Half duplex performance is enhanced by a
proprietary collision reduction mechanism. See Section 3.3 for details.
RTC
Intel® Xeon® Processor D-1500 Product Family contains a Motorola MC146818B-
compatible real-time clock with 256 bytes of battery-backed RAM. The real-time clock
performs two key functions – keeping track of the time of day and storing system data,
even when the system is powered down. The RTC operates on a 32.768-kHz crystal and
a 3-V battery.
The RTC also supports two lockable memory ranges. By setting bits in the configuration
space, two 8-byte ranges can be locked to read and write accesses. This prevents
unauthorized reading of passwords or other system security information.
The RTC also supports a date alarm that allows for scheduling a wake up event up to
30 days in advance, rather than just 24 hours in advance.
GPIO
Various general purpose inputs and outputs are provided for custom system design.
The number of inputs and outputs varies depending on Intel® Xeon® Processor D-
1500 Product Family configuration.