Themis Computer
B-1
B
B
Jumper and Solder Bead Configurations
B.1
Overview
This appendix provides a summary of the solder beads and jumpers configuration on the USPIIi-1v. Jumpers
are considered to be ‘field configurable’ and may be altered by a user on site. Solder beads are considered to
be factory configurable. Solder bead may not be altered by a user. If solder beads require re-configuration,
contact customer service.
Warning —
!
Attempting to alter solder bead configurations could seriously damage the USPIIi-1v. DO
NOT ATTEMPT TO ALTER SOLDER BEAD CONFIGURATIONS.
B.2
Field Configurables
B.2.1
Baseboard Jumpers
Table B-1.
Baseboard Jumper Setting
Jumper
Position
Description
JP1401
1-2
Set the System Flash to Read-Only (Default)
2-3
Allow writes to the System Flash
JP1502
1-2
Enable External Clock (For Themis Use Only)
(1-2 is the same as the default. The default is Uninstalled)
2-3
Enable Scan Clock (For Themis Use Only
JP1601
1-2
PCI Bus is 33 MHz / 33 MHz (Themis use only)
2-3
PCI Bus is 66 MHz / 33 MHz (Themis use only) (Default)
a
JP3301
1-2
Disable Watchdog POR Reset
(1-2 is the same as the default. The default is Uninstalled)
2-3
Enable Watchdog POR Reset
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