Thunder i7520 / Thunder i75 20 R Chapter 3: Board Installation
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3.1.4 – Watch dog Timer (JP5)
JP5
Pin 1-2: Watchdog resets system
(Default)
Pin 2-3: Watchdog generates NMI
Once the watchdog function is enabled in
BIOS setup, system needs an application or
utility to clear the watchdog timer periodically
before the timer expiration. If the application
or utility fails to clear the w atchdog timer, the
system will be reset or entered a NMI service
routine, depending on the JP5 setting.
It is an OEM option of generating NMI service
routing for watchdog function.
3.1.5 – PCIX -1 Channel B (for PCIX1-S 1 and PCIX1 -S2 slots) Maximum Freq uency (JP7)
JP7
OPEN: 133/100/66 MHz
(Default)
CLOSE: 100/66 MHz
JP7 is for onboard PXH- 1 Channel B PCI -X
bus frequency setting.
The PCIX1 -S1 and PCIX1 -S2 slots are the
only devices on this PCI -X bus.
Only one device/add-in card on P CIX1 -S1
slot is allowed to run this bus to run PCI -X
frequency up to 133 MHz. Placing two or
more devices on PCIX1-S1 through a riser
card or installing one device on PCIX1 - S2
slot can only support up to PCI -X 100 MHz.
