KIC551
K I C 5 5 1 U s e r M a n u a l
34
© 2 0 2 1 F a s t w e l V e r . 0 0 3
KIC551-01/KIC551RC-01 a KIC551-02/KIC551RC-02 b
Fig. 2.6
– UP LED
(
GP LED)
Table 2.9
– Status of UP LED
LED color
Display mode
Status of the PCI Express connection
Green
Permanent
Connection speed
– 8 Gb
Green
Flashes rapidly
Connection speed
– 5 Gb
Green
Flashes slowly
Connection speed
– 2.5 Gb
Red
Permanent
Connection fault
Not illuminated
-
No connection
In KIC551-02/KIC551RC-02 versions, the functions of
GP LED
(Fig. 2.5, Fig. 2.6 (b)) are reserved.
In the future, when modifying the PCU of FPGA module, the
GP LED
can be used.
2.3.3 Synchronization unit
The synchronization unit is designed for generating clock pulses with specified characteristics both
for the nodes of the KIC551 / KIC551RC module itself and for peripheral modules installed into the
system backplane.
In terms of design, the synchronization unit is made of three parts: driving quartz-crystal oscillator,
uncrontrolled bffer for integrated nodes and controlled 8-channel buffer for peripheral modules.
The clock generator works with SSC (Spread Spectrum Clock) disabled, which makes it possible to
build systems with asynchronous clocking. This, for example, enables to use a KIC551/KIC551RC
module in a peripheral backplane slot with a root that uses the PCI Express chip of a PEX86xx or
PEX87xx switch. In this case, the clock input from the backplane is not used.
The technical specifications of peripheral clock are listed at the end of this User Manual (Annex B).
In addition, the module can support disabling unused clock channels under certain conditions (this
feature is disabled by default).
2.3.4 PCI Express switch unit
The PCI Express switch unit is designed for establishing hardware connection between the switch
and peripheral modules of the system, as well as for switching and routing of information packets
between the host and peripheral modules with the set speed and propagation delay.
