Block Diagram
3-22
3
Polyswitches (Resettable Fuses)
The MVME1600-001 and MVME1600-011 base boards draw fused
+5Vdc, +12Vdc, and –12Vdc power from the VMEbus backplane through
connectors P1 and P2. The 3.3Vdc power (used by the ISA Super I/O
device on the base board, and by the PM603 or PM604 processor/memory
mezzanine) is derived on-board from the +5Vdc. The following table lists
the fuses with the voltages they protect on the respective base boards.
MVME1600-001 Base Board
The MVME1600-001 base board fur12Vdc, –12Vdc, and +5Vdc
power to the MVME760 transition module through polyswitches
(resettable fuses) F4, F2, and F3. The MVME760 uses these voltage
sources to power the serial port drivers and any LAN transceivers
connected to the transition module. The
FUS
LED (DS5) on the
MVME1600-001 front panel illuminates when all three voltages are
available.
The fused +5Vdc power is also supplied to the base board’s keyboard and
mouse connectors and to the 14-pin combined LED-mezzanine/remote-
reset connector, J1.
In addition, the MVME1600-001 base board pr5Vdc to the SCSI
bus
TERMPWR
signal through fuse F1, located near the front panel SCSI
connector. The
FUS
LED (DS5) on the front panel monitors the SCSI bus
TERMPWR
signal along with the other operating voltages; when the
MVME1600-001 is connected to an SCSI bus, either directly or via the
MVME760 module, SCSI terminator power helps illuminate the
FUS
LED.
Table 3-3. Fuse Assignments by Base Board
Fuse
MVME1600-001
MVME1600-011
F1
+5Vdc (SCSI)
+5Vdc
F2
–12Vdc
+12Vdc
F3
+5Vdc
F4
+12Vdc
Summary of Contents for MVME1603
Page 1: ...MVME1603 MVME1604 Single Board Computer Installation and Use V1600 1A IH4 ...
Page 14: ...xiv ...
Page 156: ...Using the Debugger 5 8 5 ...
Page 176: ...ENV Set Environment 6 20 6 ...
Page 190: ...EMC Compliance B 4 B ...
Page 200: ...Proper Grounding C 10 C ...
Page 222: ......