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Power Ground
PCI Express Transmit Pair 16+
PCI Express Transmit Pair 16-
Power Ground
Hot Plug presence detect. Input Signal from add in
card used to enable the reference clock of this slot.
Active low signal, +3.3V_RUN electrical level with a
10k
Power Ground
PCI Express Transmit Pair 17+
PCI Express Transmit Pair 17-
Power Ground
Power Ground
PCI Express Transmit Pair 18+
PCI Express Transmit Pair 18-
Power Ground
Power Ground
PCI Express Transmit Pair 19+
PCI Express Transmit Pair 19-
Power Ground
Not Connected
Hot Plug presence detect. Input Signal from add in
card used to enable the reference clock of this slot.
Active low signal, +3.3V_RUN electrical level with a
10k
Power Ground
PCI Express Transmit Pair 20+
PCI Express Transmit Pair 20-
Power Ground
Power Ground
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.
GND
B13
A13
PCIE_TX16+
B14
A14
PCIE_TX16-
B15
A15
GND
B16
A16
PRSNT2#
B17
A17
GND
B18
A18
PCIE_TX17+
B19
A19
PCIE_TX17-
B20
A20
GND
B21
A21
GND
B22
A22
PCIE_TX18+
B23
A23
PCIE_TX18-
B24
A24
GND
B25
A25
GND
B26
A26
PCIE_TX19+
B27
A27
PCIE_TX19-
B28
A28
GND
B29
A29
RSVD
B30
A30
PRSNT2#
B31
A31
GND
B32
A32
PCIE_TX20+
B33
A33
PCIE_TX20-
B34
A34
GND
B35
A35
GND
B36
A36
PCI-e reference clock lane +, derived by
PCIEx16_CLK_P
PCIE_CK_REF+ using a Clock Buffer
PCI-e reference clock lane +, derived by
PCIEx16_CLK_N
PCIE_CK_REF- using a Clock Buffer
GND
Power Ground
PCIE_RX16+
PCI Express Receive Pair 16+
PCIE_RX16-
PCI Express Receive Pair 16-
GND
Power Ground
RSVD
Not connected
GND
Power Ground
PCIE_RX17+
PCI Express Receive Pair 17+
PCIE_RX17-
PCI Express Receive Pair 17-
GND
Power Ground
GND
Power Ground
PCIE_RX18+
PCI Express Receive Pair 18+
PCIE_RX18-
PCI Express Receive Pair 18-
GND
Power Ground
GND
Power Ground
PCIE_RX19+
PCI Express Receive Pair 19+
PCIE_RX19-
PCI Express Receive Pair 19-
GND
Power Ground
RSVD
Not connected
RSVD
Not connected
GND
Power Ground
PCIE_RX20+
PCI Express Receive Pair 20+
PCIE_RX20-
PCI Express Receive Pair 20-
43
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