Pci-E X16 Slot / Peg (Pci Express Graphics X16) Connector - Seco COM-Express CCOMe-C79 User Manual

PCI-e x16 Slot / PEG (PCI Express Graphics x16) Connector

CCOMe-C79 board offer a possibility of additional expansion through one standard PCI-e x16 card edge connector CN13.
PCI-e x16 card edge connector is type LOTES p/n APCI0599-P002C01or equivalent, with the pinout shown in the following table.
On this CN13 slot, are carried out PCI-e lanes #16..#31 coming from COM Express connector (rows C-D).
It is also possible to use this connector to add the graphical capabilities of the board by using PCI-e lanes #16..#31 as PCI Express
Graphics x16 bus (PEG) interface.
Please be aware that availability of these PCI express lanes depends on the COM Express module used.
Please check the User Manual of the COM Express module used for details about the availability of these lanes and all possible groupings that can be applied to
these lanes.
Description
+12V Power Rail
+12V Power Rail
+12V Power Rail
Power Ground
SM Bus Clock line. +3.3V_RUN electrical level with
up resistor, derived by SMB_CK with
mosfet voltage level converter
SM Bus Data line. +3.3V_RUN electrical level with
up resistor, derived by SMB_DAT with
mosfet voltage level converter
Power Ground
+3.3V Power Rail
TRST#, tied to GND with 4K7Ω resistor
+3.3V Auxiliary Power Rail
Wake signal for link reactivation
Not Connected
CCOMe-C79
CCOMe-C79 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by E.S. Copyright © 2021 SECO S.p.A.
PCI Express Graphics x16 Slot- CN13
Pin name Pin nr. Pin nr.
+12V_RUN B1 A1
+12V_RUN B2 A2
+12V_RUN B3 A3
GND B4 A4
PCIE_ SMB_CLK B5 A5
PCIE_ SMB_DAT B6 A6
GND B7 A7
+3.3V_RUN B8 A8
JTAG1 B9 A9
+3.3V_ALW B10 A10
WAKE0# B11 A11
RSVD B12 A12
Pin name Description
GND Hot Plug presence detect (tied to GND)
+12V_RUN +12V Power Rail
+12V_RUN +12V Power Rail
GND Power Ground
JTAG2 TCK, tied to GND with 4K7Ω resistor
JTAG3
TDI, tied to +3.3V_RUN with 4K7Ω resistor
JTAG4 Test Data Out, not connected
JTAG5 TMS, tied to +3.3V_RUN with 4K7Ω resistor
+3.3V_RUN +3.3V Power Rail
+3.3V_RUN +3.3V Power Rail
Reset signal to the add-in card, derived by
CB_RESET# using a Ultra High Speed CMOS
PCIEx16_RST#
buffer. Active low signal, +3.3V_ALW electrical level
with a 100k
GND Power Ground
resistor.
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