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Chapter 3 Motherboard Connections
Watch Dog
JWD1 controls the Watch Dog function. Watch Dog is a monitor that can reboot the system
when a software application hangs. Jumping pins 1-2 will cause Watch Dog to reset the
system if an application hangs. Jumping pins 2-3 will generate a non-maskable interrupt
signal for the application that hangs. Watch Dog must also be enabled in BIOS. The default
setting is Reset.
Note:
When Watch Dog is enabled, users need to write their own application software
to disable it.
Watch Dog
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Reset (Default)
Pins 2-3
NMI
Open
Disabled
SMBus to PCI Slots
Jumpers JI
2
C1 and JI
2
C2 allow you to connect the System Management Bus (I
2
C) to the
PCI-E slots.
Both jumpers must be set to the same setting
(JI
2
C1 controls the clock and
JI
2
C2 controls the data).
SMBus to PCI Slots
Jumper Settings
JI
2
C1 Setting
JI
2
C2 Setting
Definition
JI
2
C1: Pins 1-2
JI
2
C2: Pins 1-2
Enabled
JI
2
C1: Pins 2-3
JI
2
C2: Pins 2-3
Disabled (Default)
Manufacturing Mode Select
Close pins 2-3 of jumper JPME2 to bypass SPI flash security and force the system to operate
in the manufacturing mode, which will allow the user to flash the system firmware from a host
server for system setting modifications. Refer to the table below for jumper settings.
Manufacturing Mode
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Normal (Default)
Pins 2-3
Manufacturing Mode
