3-15
Themis Computer
3—2P3 PMC Carrier Board
2P3 PMC Carrier Board Solder Beads
Table 3-7.
2P3 PMC Carrier Board Solder-Bead Settings (Both Sides)
Solder
Bead
Setting
a
Description
SB0901
Short 1–2
Required when the 2P3 PMC Carrier Board (in the
second
VME slot) is directly
connected to the Baseboard
Short 2–3
Required when the 2P3 PMC Carrier Board (in the
third
VME slot) is directly con-
nected to the Graphics Board or the PMC Carrier Board in the
second
VME slot
SB0902
Short 1–2
Normal operation
Short 2–3
For engineering use only
SB0903
Short 1–2
Required when the 2P3 PMC Carrier Board supports 5V VIO PMC modules
Short 2–3
Required when the 2P3 PMC Carrier Board supports 3.3V VIO PMC modules
SB1301
Short 1–2
Set Rio to Motherboard mode (2P3 PMC Carrier Board must be set to this mode)
Short 2–3
Set Rio to Add-In mode
(factory use only
)
SB1302
Short
Assign Ethernet interrupt to PCI interrupt
Open
Block Ethernet interrupt
(factory use only
)
SB1801
Short
Disable 5-MHz I
2
C clock
Open
Enable 5-MHz I
2
C clock
SB1804
Not used
SB2801
to
SB2832
Short 1–4
VME P2 connector pinout configuration (see
Table 3-8
, page 3-16)
Short 2–4
Short 3–4
SB2833
Short
Board type selection (see
Table 3-9
, page 3-17)
Open
SB2834
Short
PCB Revision settings indicator (see
Table 3-10
, page 3-17)
Open
SB2835
Short
VME P2 connector pinout configuration (see
Table 3-8
, page 3-16)
Open
SB2836
Short
VME P2 connector pinout configuration (see
Table 3-8
, page 3-16)
Open
SB2837
Short
PCB Revision settings indicator (see
Table 3-10
, page 3-17)
Open
Note:
Footnotes are described at the end of
Table 3-7
on page 3-16.
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