KIC551
K I C 5 5 1 U s e r M a n u a l
71
© 2 0 2 1 F a s t w e l V e r . 0 0 3
Table 4.12 provides the description of the monitored parameters corresponding to the specified
values:
Table 4.12
– Main supply voltages
Notation
Description
Nominal value
Tolerance, %
V (+2.5 V)
Power voltage of optical
transmitters/receivers
+ 2.5 V
5
Vccp1
Power supply voltage of
the VLSI core of the PCI
Express switch
+0.9 V
5
+Vcc
Reference power supply
voltage of LM87
+5 V
5
+3.3 V
Main system power
supply voltage
+3.3 V
5
+12 V
Input power supply
voltage of the module
+12 V
10
Vccp2
Power supply voltage of
digital units of PHY
microchips
+1 V
5
AIN1
Power supply voltage of
VLSI output buffers of
PCI Express switch
+1.8 V
5
AIN2
Power supply voltage of
the VLSI core of 10Gb
Ethernet switch
+1.2 V
5
Table 4.13
– Monitored temperature values
Notation
Description
Maximum temperature
Text
Temperature of the PCB at the
point under VLSI of PCI Express
switch
105
Tint
Temperature of the printed circuit
board in the free area
105
In addition, temperature of VLSI chip of PCI Express switch is controlled by a software-based
method using a query of the special-purpose VLSI register (Table 4.13).
Control of the microcontroller temperature
In addition to temperature control by LM87 hardware monitor, the
microcontroller’s temperature
can also be controlled by an integrated microcontroller temperature sensor.
Taking readings as with the Hardware monitor is via the Telnet-client interface by issuing the
command:
Cmd> tmp?
