2-21
Themis Computer
2—2P2 PMC/XMC Carrier Board
2P2 PMC/XMC Carrier Board Solder Beads
SB41
Short 1–2
Audio source selection
Note:
Short 1–2 = Route audio to Baseboard PCI connector.
Short 2–3 = Route audio to Baseboard PCI-Express connector.
Important
–All solder beads must be set at the same time.
Short 2–3
SB42
Short 1–2
Short 2–3
SB43
Short 1–2
Short 2–3
SB44
Short 1–2
Short 2–3
SB45
Short 1–2
Short 2–3
SB64
Short 1–2
JTAG power = 3.3V for CPLD programming
Short 2–3
Ground
SB65
Open
GbE Controller PCI LOCK signal = Not connected
Short
SB66
Open
Audio select indicator = Microphone In/Headphones Out
Short
Audio select indicator = Line In/Line Out
SB67
Open
CPLD mode (
Internal use only
)
Short
SB68
Short 1–2
PCI bridge primary (66 MHz) clock source = Graphics Board
Short 2–3
PCI bridge primary (66 MHz) clock source = Baseboard
SB69
Open
PCI bridge secondary M66EN = Not forced by Carrier
Short
SB70
Open
PCI bridge primary M66EN = Not forced by Carrier
Short
SB71
Open
Write-enable for XMC2 NV memory = Disabled
Short
Write-enable for XMC2 NV memory = Enabled
Table 2-9.
2P2 PMC/XMC Carrier Board Solder-Bead Settings (Continued)
Solder
Bead
a
Setting
b
Description
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