Datasheet

Functional Description
Intel® Xeon® Processor D-1500 Product Family 115
Datasheet - Volume 1 of 4: Integrated Platform Controller Hub
March 2015
3.13.2.2 Advanced TCO Mode
Intel® Xeon® Processor D-1500 Product Family supports the Advanced TCO mode in
which SMLink0 and SMLink1 are used in addition to the host SMBus. See Figure 3-7 for
more details. In this mode, the Intel ME SMBus controllers must be enabled by soft
strap in the flash descriptor.
SMLink1 is used for a Node Power Monitor. The interface could be running at the
frequency of up to 1 MHz depending on different factors such as board routing or bus
loading when the Fast Mode is enabled using a soft strap.
SMLink0 is dedicated to Embedded Controller (EC) or Baseboard Management
Controller (BMC) use. In the case where a BMC is connected to SMLink0, the BMC
communicates with the Intel ME through the Intel ME SMBus connected to SMLink0.
The host and TCO slave communicate with BMC through SMBus.
3.14 General Purpose I/O (D31:F0)
Intel® Xeon® Processor D-1500 Product Family contains up to 68 General Purpose
Input/Output (GPIO) signals for Intel® Xeon® Processor D-1500 Product Family . Each
GPIO can be configured as an input or output signal. The number of inputs and outputs
varies depending on the configuration. Following is a brief summary of GPIO features.
• Capability to mask Suspend well GPIOs from CF9h events (configured using
GP_RST_SEL registers)
• Added capability to program GPIO prior to switching to output
Figure 3-7. Advanced TCO Mode
Host SMBus
TCO Slave
SPD (Slave)
Legacy Sensors
(Master or Slave
with ALERT)
Advanced TCO Mode
SMBus
SMLink0
Intel ME SMBus
Controller 3
Node Power
Monitor
EC or
BMC
SMLink1
Intel Xeon Processor D-1500
Product Family
Intel ME SMBus
Controller 2
Intel ME SMBus
Controller 1
PCIe* Device