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KTD-00781-A
3.14
Clear CMOS Jumper (Clr-CMOS /JBAT1)
The Clr-CMOS Jumper is used to clear the CMOS content.
Pin 2-3 is default position
Pin 2-3 (1 minute only) is Clear CMOS
To clear all CMOS settings, including Password protection, move the Clr-CMOS jumper to pin 2-3 for 1 minute
(Works with or without power connected to the system).
WARNING: Don't leave the jumper in Clear CMOS position, otherwise without power connected to the system
the battery will fully depleted within a few weeks.
WARNING: JP4 and JP5 are used to select the BIOS to boot. These jumpers are for manufacturing purpose
only and they shall always be in the positions indicated above (JP4 Jumper in position 1-2 and JP5 Jumper in
position 2-3). If one or both Jumpers are not in correct position the KTG41 will not boot BIOS.
3.15
The SPI Jumper (SPI-Jumper / JP6)
The SPI selection jumper is used to switch between onboard SPI and external SPI device.
Note: The SPI device holds the BIOS contents and should not be removed from its default position unless a
pre-programmed SPI device is connected to the SPI1 connector.
Pin 2-3 is default position
KTG41 family
+
CR2032
3V
•
JP5
3
2
1
•
JP4, pin 1-2 is default position
3
2
1
•
JBAT1, pin 1-2 is default position
3
2
1
•
JP6
3
2
1
(SPI connectors)
Page 42 of 78
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