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module, the green
terminator power is available. If the
module flickers during SCSI bus operation, check fuse F1 on the P2
adapter board.
Note
In MVME761 I/O mode, the MVME2603/2604 supplies SCSI
terminator power through a polyswitch (resettable fuse) located on
the P2 adapter board.
Speaker Control
The MVME2603/2604 base board supplies a
to the 14-pin combined LED-mezzanine/remote-reset connector,
J1. When J1 is used as a remote reset connector with the LED
mezzanine removed, the
external speaker to obtain a beep tone. For the pin assignments of
J1, refer to
PM603/604 Processor
At present, you have the choice of a PowerPC 603 or a PowerPC 604
processor chip with 16MB to 256MB of ECC DRAM, 256KB of level
2 cache (L2 cache), and up to 9MB of Flash memory. The L2 cache
and 1MB of 16-bit Flash memory reside on the MVME2603/ 2604
base board. The ECC DRAM and 4MB or 8MB of additional (64-bit)
Flash memory are located on the RAM200 memory mezzanine.
LED on the module illuminates when SCSI
SCSI
Because any device on the SCSI bus can provide
, and because the
TERMPWR
of several voltages, the LED does not directly indicate
the condition of any single fuse. If the LED flickers or
goes out, check all the fuses (polyswitches).
SPEAKER_OUT
Table
4-1.
Functional Description
LED on the transition
SCSI
LED monitors the status
FUS
SPEAKER_OUT
signal can be cabled to an
3
signal
3-21
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