Kontron AM4024e - Manual (Page 47)

D R A F T — F O R I N
T E R N A L U S E O N L Y
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User Guide
AM4024(E)
Configured for Mode B, the User-Specific LEDs are dedicated to functions as follows:
ULED3: Ethernet Link Status of AMC Gigabit Ethernet channel A, AMC port 0 (green)
ULED2: Ethernet Link Status of AMC Gigabit Ethernet channel B, AMC port 1 (green)
ULED1: SATA channels active (green)
ULED0: --
Note: If the ULED3 is lit red, the processor temperature is above 100° C.
If all ULEDs are blinking red, the processor temperature is above 125°C.
3.3.8 LED Control Register (LCTRL)
The LED Control Register enables the user to switch on and off the front panel User-Specific LEDs.
Note: The LED Control Register can only be used if the User-Specific LEDs indicated in the LED
Configuration Register (Chapter 3.3.7) are configured in Mode A.
Table 32: LED Control Register (LCTRL)
ADDRESS 0x291
BIT 7 6 5 4 3 2 1 0
NAME LCMD LCOL
ACCESS R/W R/W
RESET 0000 0000
BITFIELD DESCRIPTION
7..4 LCMD User-Specific LED command:
0000 = Get ULED0
1000 = Set ULED0
0001 = Get ULED1 1001 = Set ULED1
0010 = Get ULED2 1010 = Set ULED2
0011 = Get ULED3 1011 = Set ULED3
0100 - 0111 = Reserved 1100 - 1111 = Reserved
3..0 LCOL User-Specific LED color:
0000 = Off
0001 = Green
0010 = Red
0011 = Red+Green
0100 - 1111 = Reserved