MSC CX-MB-EVA2 PCI Express x1 Slots, Assignment PCIe Lane to connector reference Specification

CX-MB-EVA2 User's Manual Hardware

4.3PCI Express x1 Slots

One PCIe x1 slot is assigned to each of the 6 PCIe lanes of the COM Express module.

Note: The order of the connectors has changed on the new layout. Now X6 is near PEG slot.

Note : The number of PCIe lanes available will depend on the COM Express module used – not all modules can support 6 PCIe lanes.

PCIe Lane	References
PCIe Lane 0	X6
PCIe Lane 1	X7
PCIe Lane 2	X8
PCIe Lane 3	X9
PCIe Lane 4	X10
PCIe Lane 5	X11

Table 5 Assignment PCIe Lane to connector reference

Specification:

￿References: X6 - X11

￿ Connector: AMP / Tyco 4-1612163-1

￿Pinout: Refer to PCI express specification

Pin	Signal	Pin	Signal
A1	PRSNT1#	B1	12V
A2	12V	B2	12V
A3	12V	B3	12V
A4	GND	B4	GND
A5	JTAG_TCK	B5	SMB_CLK
A6	JTAG_TDI	B6	SMB_DAT
A7	JTAG_TDO	B7	GND
A8	JTAG_TMS	B8	3V3
A9	3V3	B9	JTAG_RST#
A10	3V3	B10	3V3_AUX
A11	PE_RST#	B11	WAKE#
KEY
A12	GND	B12	RSVD
A13	REFCLK+	B13	GND
A14	REFCLK-	B14	PET_p0
A15	GND	B15	PET_n0
A16	PER_p0	B16	GND
A17	PER_n0	B17	PRSNT2#
A18	GND	B18	GND

Table 6 Pin out PCI Express

21