Technical information

Technical Information • SCS-TRUMPET • CPU Expansion Side Card
Rear I/O
As an option, the SCS-TRUMPET can be
equipped with up to five rear I/O connectors P1
to P5, as defined by the CompactPCI® Serial
specification. Available for rear I/O are three
signal groups, SATA, USB, and legacy I/O.
For a CompactPCI® Serial CPU board with side
card assembly, it is recommended to employ a
backplane which provides the system slot at the
right edge. Through positioning the side card
out of the backplane shape, loss of a peripheral
slot otherwise can be avoided. However, no
damage will occur if the SCS-TRUMPET would
be installed into a CPCI-S peripheral backplane
slot, and this combination is definitely suitable
for rear I/O across a transition module.
With respect to SATA and USB, the pin
assignment for each rear I/O connector is similar
to the CPCI-S system slot specification. Thereby
these data ports can be used either via a
custom specific rear I/O transition module, or by
means of a secondary CompactPCI® Serial
backplane as an alternate. For the additional
backplane it would be mandatory to have the
system slot aligned left, so that the CPU and
side card assembly both will be installed into
system slots of the associated backplanes, with
a pitch of 4HP.
If ordered for rear I/O, the SCS-TRUMPET comes
populated with 6G SATA and USB 3.0
controllers on-board, which are wired to the
RIO connectors P2 and P3 (4 x SATA, 6 x USB
3.0). The pin assignment follows the
CompactPCI® Serial system board specification.
By means of a secondary backplane, which
distributes these data channels to secondary
peripheral slots, up to six USB driven CPCI-S
peripheral cards could be installed, and/or up to
four SATA based boards, in addition to the
primary backplane slots.
The RIO connector P4 is used for legacy I/O
derived from an on-board SIO, such as UART
(COM), PS/2 type KB/MS, and parallel printer
(LPT). Most pins can be operated as simple
GPIO ports if required. Rear I/O usage via P4
would require in addition a custom specific rear
I/O module.
P1 and P5 are mainly provided to supply an
active rear I/O transition module with power, as
required e.g. for USB connectors (V
BUS
), or an
SATA SSD module.
Depending on the customers requirements, not
all rear I/O connectors P1 to P5 may be
populated.
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