Reset Switch (S2) - Motorola MVME2700 Series Installation And Use Manual

The interrupter connected to the
filtered to remove switch bounce.

RESET Switch (S2)

The
RESET
resets all onboard devices; it also drives a
MVME2700 is the system controller.
The Universe II ASIC includes both a global and a local reset driver. When
the Universe II operates as the VMEbus system controller, the reset driver
provides a global system reset by asserting the VMEbus signal
A
SYSRESET
reset, a watchdog timeout, or by a control bit in the Miscellaneous Control
Register (MISC_CTL) in the Universe II ASIC.
asserted for at least 200 ms, as required by the VMEbus specification.
Similarly, the Universe II ASIC supplies an input signal and a control bit
to initiate a local reset operation. By setting a control bit, software can
maintain a board in a reset state, disabling a faulty board from participating
in normal system operation. The local reset driver is enabled even when
the Universe II ASIC is not system controller. Local resets may be
generated by the
VMEbus
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switch is located on the LED mezzanine. The
∗
signal may be generated by the
switch, a power-up reset, a watchdog timeout, a
RESET
∗
, or a control bit in the MISC_CTL register.
SYSRESET
switch is an edge-sensitive circuit,
ABORT
∗
signal if the
SYSRESET
switch, a power-up
RESET
SYSRESET
Block Diagram
switch
RESET
∗
.
SYSRESET
∗
remains
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