Dmi2/Pci Express* Port 0 Signals; Intel Quickpath Interconnect Signals; Dmi2 And Pci Express* Port 0 Signals; Intel Qpi Port 0 And 1 Signals - Intel Xeon Processor E5-1600 Datasheet

Table 6-6. PCI Express* Miscellaneous Signals (Sheet 2 of 2)
PEHPSDA
Note: Refer to the appropriate Platform Design Guide (PDG) for additional implementation details.
6.3

DMI2/PCI Express* Port 0 Signals

Table 6-7.

DMI2 and PCI Express* Port 0 Signals

DMI_RX_DN[3:0]
DMI_RX_DP[3:0]
DMI_TX_DP[3:0]
DMI_TX_DN[3:0]
6.4

Intel QuickPath Interconnect Signals

Table 6-8.

Intel QPI Port 0 and 1 Signals

QPI{0/1}_CLKRX_DN/DP
QPI{0/1}_CLKTX_DN/DP
QPI{0/1}_DRX_DN/DP[19:00]
QPI{0/1}_DTX_DN/DP[19:00]
Table 6-9.

Intel QPI Miscellaneous Signals

QPI_RBIAS
QPI_RBIAS_SENSE
QPI_VREF_CAP
Note: Refer to the appropriate Platform Design Guide (PDG) for additional implementation details.
146
Signal Name
PCI Express* Hot-Plug SMBus Data: Provides PCI Express* hot-
plug support via a dedicated SMBus interface. Requires an external
general purpose input/output (GPIO) expansion device on the
platform.
Signal Name
DMI2 Receive Data Input
DMI2 Transmit Data Output
Signal Name
Reference Clock Differential Input. These pins provide the PLL
reference clock differential input. The Intel QPI forward clock
frequency is half the Intel QPI data rate.
Reference Clock Differential Output. These pins provide the PLL
reference clock differential input. The Intel QPI forward clock
frequency is half the Intel QPI data rate.
Intel QPI Receive data input.
Intel QPI Transmit data output.
Signal Name
This input is used to control Intel QPI bias currents. QPI_RBIAS is
required to be connected as if the link is being used even when
Intel QPI is not used. Refer to the appropriate Platform Design
Guide (PDG) for further details.
Provides dedicated bias resistor sensing to minimize the voltage
drop caused by packaging and platform effects.
QPI_RBIAS_SENSE is required to be connected as if the link is
being used even when Intel QPI is not used. Refer to the
appropriate Platform Design Guide (PDG) for further details.
Intel QPI voltage reference used to measure the actual output
voltage and comparing it to the assumed voltage. Refer to the
appropriate Platform Design Guide (PDG) for further details .
Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families
Signal Descriptions
Description
Description
Description
Description
Datasheet Volume One