Table of Contents
Advertisement
Functional Description
For further information regarding the configuration of the General Purpose LEDs, refer to Chap-
ter 4.4.14, LED Configuration Register, and Chapter 4.4.15, LED Control Register.
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 2-3:
POST Code Sequence
STATE
0
All LEDs are OFF; start of sequence
1
High nibble
2
Low nibble
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 2-4:
POST Code Example
LED3
HIGH NIBBLE
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 for debugging purposes.
In the event that a General Purpose LED lights up during boot-up and the
CP6003-SA does not boot, please contact Kontron for further assistance.
Page 2 - 10
GENERAL PURPOSE LEDs
LED2
off (0)
on (1)
off (0)
off (0)
LED1
LED0
off (0)
off (0)
off (0)
on (1)
CP6003-SA
RESULT
0x4
0x1
0x41
ID 1044-9757, Rev. 2.0
Advertisement
Table of Contents
