Dip Switch Sw1; Post Code Sequence; Post Code Example; Dip Switch Sw1 Function - Kontron CP3002 User Manual

Functional Description
How to Read the 8-Bit POST Code
Due to the fact that only 4 bits are available and 8 bits must be displayed, the POST code output
is multiplexed on the General Purpose LEDs.
Table 2-5:

POST Code Sequence

STATE
0 All LEDs are OFF; start of POST sequence
1 High nibble
2 Low nibble; state 2 is followed by state 0
The following is an example of the General Purpose LEDs' operation if the POST configuration
is enabled (see also Table 2-4, "General Purpose LED Function").
Table 2-6:

POST Code Example

LED3
off (0)
HIGH NIBBLE
off (0)
LOW NIBBLE
POST CODE
Note ...
Under normal operating conditions, the General Purpose LEDs should not re-
main lit during boot-up. They are intended to be used only for debugging purpos-
es. In the event that a General Purpose LED lights up during boot-up and the
CP3002 does not boot, please contact Kontron for further assistance.
2.11.2

DIP Switch SW1

The CP3002 is equipped with one 4-bit DIP switch, SW1, used for board configuration.
Table 2-7:

DIP Switch SW1 Function

SWITCH
1 POST code indication on LED0..3
2 SPI flash boot configuration
3 Reset configuration
4 Clear uEFI BIOS settings
Page 2 - 10
GENERAL PURPOSE LEDs
LED2 LED1
on (1) off (0)
off (0) off (0)
FUNCTION
LED0 RESULT
off (0) 0x4
on (1) 0x1
0x41
ID 1042-9252, Rev. 2.0
CP3002