Reset Switch (S2); Front Panel Indicators (Ds1 - Ds6) - Motorola MVME2603-1121A Installation And Use Manual

RESET Switch (S2)

The
RESET
switch resets all onboard devices; it also drives a
the MVME2603/2604 is the system controller.

Front Panel Indicators (DS1 - DS6)

There are six LEDs on the MVME2603/2604 front panel:
,
CPU PCI
Note
switch is located on the LED mezzanine. The
, , and .
FUS SYS
(DS1, yellow). Checkstop; driven by the MPC603/604
CHS
status lines on the MVME2603/2604. 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 or carrier board (if installed) is active.
(DS5, green). Fuse OK; lights when +5Vdc, +12Vdc, and
FUS
Ð12Vdc power is available from the base board to the
transition module and remote devices.
Because the LED monitors the status of several
FUS
voltages on the MVME2603/2604, 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
Universe ASIC in the MVME2603/2604 is the VMEbus
system controller.
Functional Description
RESET
∗ signal if
SYSRESET
, ,
CHS BFL
∗
BRDFAIL
∗ (Data
DBB
∗ (Initiator
IRDY
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