Intel E5-2648L CM8062100854905 用户手册

146

Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families

Datasheet Volume One

Refer to the appropriate Platform Design Guide (PDG) for additional implementation details.

Refer to the appropriate Platform Design Guide (PDG) for additional implementation details.

PEHPSDA

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.

DMI_RX_DN[3:0]
DMI_RX_DP[3:0]

DMI2 Receive Data Input

DMI_TX_DP[3:0]
DMI_TX_DN[3:0]

DMI2 Transmit Data Output

QPI{0/1}_CLKRX_DN/DP

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.

QPI{0/1}_CLKTX_DN/DP

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.

QPI{0/1}_DRX_DN/DP[19:00]

Intel QPI Receive data input.

QPI{0/1}_DTX_DN/DP[19:00]

Intel QPI Transmit data output.

QPI_RBIAS

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.

QPI_RBIAS_SENSE

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.

QPI_VREF_CAP

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.