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A.3
Processor Straps - Jumper Settings
Table 17.
Processor Straps - Jumper Settings
Jumper Name
Ref
Des
Locatio
n
Color
Default
Setting
Description
CFG[2]
PCIe x16 Lane
Reversal
J6E5
Blue
Open
Open: Normal Operation
Closed: Lane Reversed
CFG[3]
PCIe x4 Lane
Reversal
J6E6
Blue
Open
Open: Normal Operation
Closed: Lane Reversed
CFG[5]
CFG[6]
PCIe Port
Bifurication
J6E4
J6F6
Blue
Closed
Open
J6E4
J6F6
Operation
Open
Open
x16 operation
Closed
Open
x8 & x8
(default)
Open
Closed
RESERVED
Closed
Closed
x8, x4 & x4
CFG[7]
J6E2
Blue
Closed
Reserved
A.4
PCH Straps - Jumper Settings
Table 18.
PCH Straps - Jumper/Resistor Settings
Jumper
Name
Ref Des
Location
Color
Default
Setting
Description
INTRUDER
Protection
(INTRUDER_
N)
J1J2
Black
Open
Open: Normal
Closed: Disable Power
No Reboot
(NRBOOTS)
J1H1
Blue
Open
Open: Normal
Closed: No Reboot
Boot Device
Select
(BBS0)
J1H3
J1H4
Blue
Headers
Unpopulated
J1H3
J1H4
Operation
Open
Open
SPI (default)
Open
Closed
Reserved
Closed
Open
Reserved
Closed
Closed
Reserved
CMOS Reset
J1J5
Blue
Shunt [1-2]
1-2: Normal
2-3: Reset (hold for 20 seconds)
Secondary
RTC Reset
J1J4
Blue
Shunt [1-2]
1-2: Normal
2-3: Reset (hold for 20 seconds)
DMI TX
Voltage
(GPIO17)
J1G7
Blue
Pull Up
Open
Open: Sets the DMI termination voltage to
Vcc/2
Closed: Sets the DMI termination voltage to
Vcc
continued...
Technical Reference—Crystal Forest
Intel
®
Xeon
®
Processor E3-1125C with Intel
®
Communications Chipset 8910 Development Kit
October 2012
User Guide
Order No.: 328009-001US
37