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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.
Table 32: LED Control Register (LCTRL)
ADDRESS
BIT
7
NAME
ACCESS
RESET
BITFIELD
7..4
User-Specif ic LED command:
LCMD
0000 = Get ULED0
0001 = Get ULED1
0010 = Get ULED2
0011 = Get ULED3
0100 - 0111 = Reserved
3..0
User-Specif ic LED color:
LCOL
0000 = Of f
0001 = Green
0010 = Red
0011 = Red+Green
0100 - 1111 = Reser ved
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.
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6
5
4
LCMD
R/W
0000
1000 = Set ULED0
1001 = Set ULED1
1010 = Set ULED2
1011 = Set ULED3
1100 - 1111 = Reser ved
0x291
3
2
LCOL
R/W
0000
DESCRIPTION
User Guide
AM4024(E)
1
0
47
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