SC9-TOCCATA • CompactPCI® Serial CPU Board • 11th Generation Intel® Processors
Mezzanine Expansion
The SC9-TOCCATA is equipped with a set of
high-speed local expansion interface
connectors, which can be optionally used to
attach either a low profile mezzanine module
(fits into the 4HP front panel envelope) or a
side card for an 8HP or even 12HP assembly in
total.
The connectors HSE1 and HSE2 are high
speed connectors, as required for PCI Express®
Gen4 and USB3 10Gbps. The socket EXP is
used as a legacy interface (e.g. HD Audio,
UART) and not required for many mezzanine
modules. All mezzanine connectors allow
board-to-board heights of 10.0mm (S20, S40,
S48), 10.8mm (S80, S82), and 18.7mm (e.g.
SCJ, SCL side cards 8HP assembly).
HSE1 is assigned to a PCIe® Gen4 x4 link,
derived directly from the CPU. On a 4HP low
profile mezzanine module or 8HP side card
this link is wired to a fast Gen3 or Gen4 NVMe
SSD housed in an M.2 socket, typically used as
boot device and general mass storage. In
addition, HSE1 brings a 10Gbps USB3 port,
often used for additional front I/O.
HSE2 provides another four PCIe® Gen3 lanes,
configurable for versatile link width and
combinations, and in addition a 4
th
DisplayPort video output. Some mezzanine
modules such as the S20 get along with the
HSE1 connector alone, others such as S40, S48
or S80 depend on both HSE1 and HSE2 for full
functionality.
Related Information Mezzanine Connectors
https://www.ekf.com/s/mezzanine_connectors.pdf
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