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Front Panel Indicators (DS1 - DS6)
There are six LEDs on the MVME1603/1604 front panel:
,
CPU
PCI
Note
,
, and
.
FUS
SYS
(DS1, yellow). Checkstop; driven by the MPC603/604
CHS
status lines on the MVME1603/1604. Lights when a halt
condition from the processor is detected.
(DS2, yellow). Board Failure; lights when the
BFL
signal line is active.
(DS3, green). CPU activity; lights when the
CPU
Bus Busy) signal line on the processor bus is active.
(DS4, green). PCI activity; lights when the
PCI
Ready) signal line on the PCI bus is active. This indicates that
the PCI mezzanine (if installed) is active.
(DS5, green). Fuse OK; lights when +5Vdc, +12Vdc, and
FUS
–12Vdc power is available from the base board to the
transition module and remote devices.
The circuitry monitored by the
between the MVME1600-001 and MVME1600-011
versions of the base board. The differences are detailed
under the respective base board descriptions in
Chapter 1.
Because the
LED monitors the status of several
FUS
voltages on the MVME1600-001, it does not directly
indicate the condition of any single fuse. If the LED
flickers or goes out, check all the fuses (polyswitches).
(DS6, green). System Controller; lights when the
SYS
VMEchip2 in the MVME1603/1604 is the VMEbus system
controller.
Functional Description
CHS
BRDFAIL
∗
(Data
DBB
∗
(Initiator
IRDY
LED differs
FUS
,
,
BFL
3
∗
3-21
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