Seco CCHPC-C78-C User Manual page 43

PCI-e Transmitter lane 5-
Power Ground
Power Ground
PCI-e Transmitter lane 6+
PCI-e Transmitter lane 6-
Power Ground
Power Ground
PCI-e Transmitter lane 7+
PCI-e Transmitter lane 7-
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
Please be aware that PCI-e management on the carrier board requires that the add-in card placed on this slot manages the Presence Detect pins
(B31/B17 and A1). More exactly, according to the PCI Express Card Electromechanical Specification v3.0, it is required that these pins are tied together
on the ADD-in Card (at least, it is needed that pin A1 is connected with pin B17 or pin B31).
In case that these pins are not tied together on the add-in card, then the carrier board will not acknowledge the presence of the card in the slot, and will
not enable the reference clock (and the add-in card will not work).
CCHPC-C78-C
CCHPC-C78-C - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.O. - Reviewed by E.S. Copyright © 2023 SECO S.p.A.
PCIE_TX5- B20 A20
GND B21 A21
GND B22 A22
PCIE_TX6+ B23 A23
PCIE_TX6- B24 A24
GND B25 A25
GND B26 A26
PCIE_TX7+ B27 A27
PCIE_TX7- B28 A28
GND B29 A29
RSVD B30 A30
PRSNT2# B31 A31
GND B32 A32
GND Power Ground
PCIE_RX5+ PCI-e Receiver lane 5+
PCIE_RX5- PCI-e Receiver lane 5-
GND Power Ground
GND Power Ground
PCIE_RX6+ PCI-e Receiver lane 6+
PCIE_RX6- PCI-e Receiver lane 6-
GND Power Ground
GND Power Ground
PCIE_RX7+ PCI-e Receiver lane 7+
PCIE_RX7- PCI-e Receiver lane 7-
GND Power Ground
RSVD Not Connected
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