Front Panel and LEDs
2.3 Declaration of the LEDs
2.3.1 Front panel LEDs
2.3.1.1 VMEbus LEDs (only for VME-PMC-CPU/2)
LED
Meaning (LED on)
Labelling on
front panel
Name
Colour
B
BUSY
green Access from VMEbus to VME-PMC-CPU/2
I
IRQ
green
VME-PMC-CPU/2 triggers an interrupt on the VMEbus
F
FAIL
red
VME-PMC-CPU/2 triggers FAIL on VMEbus
E
BERR
red
VME-PMC-CPU/2 triggers Bus-Error on VMEbus
Table 9:
Indication of the VMEbus LEDs
2.3.1.2 USB LEDs (only for VME-PMC-CPU/2)
LED
Meaning (LED on)
Labelling on
front panel
Name
Colour
U1
USB-Power 1
red
USB-power at port 1 is active
1)*
LED1710
(MPH_PCLT0)
red
USB-port1-status-indicator bit 0
1)*
LED1711
(MPH_PCLT1)
red
USB-port1-status-indicator bit 1
U2
USB-Power 2
red
USB-power at port 2 is active
1)*
LED1610
(MPH_PCLT0)
red
USB-port2-status-indicator bit 0
1)*
LED1611
(MPH_PCLT1)
red
USB-port2-status-indicator bit 1
Table 10:
Indication of the USB-LEDs
1)*
These LEDs have no function in the CC-version.
VME-PMC-CPU/2
Hardware Manual • Doc.-No.: V.1917.21 / Rev. 1.2
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