Intel E5-4600, CM8062101038606 PCI Express* Port 2 Signals Sheet 2, PCI Express* Port 3 Signals

Signal Descriptions

Table 6-4. PCI Express* Port 2 Signals (Sheet 2 of 2)

Signal Name

Description

PE2D_RX_DN[15:12]	PCIe* Receive Data Input
PE2D_RX_DP[15:12]
PE2A_TX_DN[3:0]	PCIe* Transmit Data Output
PE2A_TX_DP[3:0]
PE2B_TX_DN[7:4]	PCIe* Transmit Data Output
PE2B_TX_DP[7:4]
PE2C_TX_DN[11:8]	PCIe* Transmit Data Output
PE2C_TX_DP[11:8]
PE2D_TX_DN[15:12]	PCIe* Transmit Data Output
PE2D_TX_DP[15:12]

Table 6-5. PCI Express* Port 3 Signals

Signal Name

Description

PE3A_RX_DN[3:0]	PCIe* Receive Data Input
PE3A_RX_DP[3:0]
PE3B_RX_DN[7:4]	PCIe* Receive Data Input
PE3B_RX_DP[7:4]
PE3C_RX_DN[11:8]	PCIe* Receive Data Input
PE3C_RX_DP[11:8]
PE3D_RX_DN[15:12]	PCIe* Receive Data Input
PE3D_RX_DP[15:12]
PE3A_TX_DN[3:0]	PCIe* Transmit Data Output
PE3A_TX_DP[3:0]
PE3B_TX_DN[7:4]	PCIe* Transmit Data Output
PE3B_TX_DP[7:4]
PE3C_TX_DN[11:8]	PCIe* Transmit Data Output
PE3C_TX_DP[11:8]
PE3D_TX_DN[15:12]	PCIe* Transmit Data Output
PE3D_TX_DP[15:12]

Table 6-6. PCI Express* Miscellaneous Signals (Sheet 1 of 2)

Signal Name

Description

		This input is used to control PCI Express* bias currents. A 50 ohm
		1% tolerance resistor must be connected from this land to VSS by
	PE_RBIAS	the platform. PE_RBIAS is required to be connected as if the link is
		being used even when PCIe* 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. PE_RBIAS_SENSE
	PE_RBIAS_SENSE	is required to be connected as if the link is being used even when
		PCIe* is not used. Refer to the appropriate Platform Design Guide
		(PDG) for further details.
		PCI Express* voltage reference used to measure the actual output
	PE_VREF_CAP	voltage and comparing it to the assumed voltage. A 0.01uF
		capacitor must be connected from this land to VSS.
		PCI Express* Hot-Plug SMBus Clock: Provides PCI Express* hot-
	PEHPSCL	plug support via a dedicated SMBus interface. Requires an external
		general purpose input/output (GPIO) expansion device on the
		platform.
Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families			145
Datasheet Volume One