B—DIP-Switch, Jumper-Pin, and Solder-Bead Configurations
Factory-Configurable
B-7
Themis Computer
B.3
Factory-Configurable
B.3.1
Baseboard Solder Beads
Solder beads are found only on the
bottom side
(solder side) of the USPII
e
-USB
Baseboard and are described in
Table B-5
.
In
Table B-5
, if no pin number is given, only
2
solder pins exist. If there are
3
solder
pins, the two pins listed are shorted together.
Short
means a solder bead is installed,
creating an electrical path between two contacts.
Open
means no solder bead is
installed, hence the path between the contacts is open.
Figure B-3
on page B-10 pro-
vides the location of the baseboard solder beads. Remember that
pin 1
is indicated
on the board by a
thick bar line
.
Caution:
When dealing with a
3-pin
solder-bead switch, a solder bead will short
only one set of pins, either 1–2 or 2–3.
If a solder bead shorts more than 2 pins, call Themis Customer Support.
Table B-5.
Baseboard Solder-Bead Settings (Bottom Side)
Solder
Bead
Setting
a
Description
SB0501
Short 1–2
PWR_HEALTHY.
Short 2–3
SCAN_TRST is driven by PLD
SB0801
Short
CPU CLK PLL (clock phase-locked loop) can be programmed (
normal mode
).
Open
CPU clock generator serial load is disabled.
SB1201
Short
SCAN_TRST of non-Sun ASIC is driven by PWR_HEALTHY.
Open
SCAN_TRST of non-Sun ASIC is not driven by PWR_HEALTHY.
SB1801
Short 1–2
Audio Codec 97 (AC97) signals are connected to the PCI extension.
Short 2–3
Audio Codec 97 (AC97) signals are connected to the VME P2 connector.
SB1805
to
SB1807
Short 1–2
Parallel port is connected to VME P2.
Short 2–3
No parallel port on VME P2.
High-temperature, software-alarm, and power-failure signals enabled on P2.
SB1810
to
SB1813
Short
PS/2 signals are connected to VME P2.
Open
PS/2 signals are not connected to VME P2.
SB2201
to
SB2203
Short 1–2
Only 5V is connected to programming power of flash memory.
Short 2–3
Only 12V is connected to programming power of flash memory.
Note:
Footnotes are described at the end of
Table B-5
on page B-8.
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