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BDM-610000050
Rev A
Chapter 4: Using the cpuModule
69
Multi-Color LED
The CMX58886CX has a Multi-Color LED located beside the EIDE connector (CN10) which can be enabled or
disabled in the BIOS setup screen. The color of the LED indicates the status of the board, as shown in Table 49.
The LED can also be controlled manually by writing to I/O Port 456h, as shown in Table 50 and Table 51.
The following table lists the color displayed and the value written.
Table 49
LED Colors
Color
Description
Green
Normal Operation
Blue
On Board IDE Activity
Red
cpuModule is in reset
1
1. If power is applied to the cpuModule while jumper JP5 is installed, the LED will be red. This does not
indicate that the board is in reset
Yellow (Red + Green)
cpuModule is in Standby
White (R+G+B)
cpuModule is approaching thermal limit
(CPU is throttled if enabled)
Cyan (Blue + Green)
Ethernet Link at 10 Mbps
Magenta (Blue + Red)
Ethernet Link at 100 Mbps
Blink
Ethernet Activity
Table 50
Multi-Color LED I/O Address 456h
D7
D6
D5
D4
D3
D2
D1
D0
User
EEPROM
User
EEPROM
User
EEPROM
Reserved
Reserved
Multi-Color LED
Note
When writing to I/O Port 456h, only the lower three bits of the register should be modified.
Modifying the upper bits will effect the User EEPROM
Table 51
Manual LED Colors
I/O Port 456h Value
Color
0x00
Automatic (see Table 49)
0x08
Off
1
1.
Disabling the LED will reduce system power consumption.
0x09
Blue
0x0A
Green
0x0B
Cyan (Green + Blue)
0x0C
Red
0x0D
Magenta (Red + Blue)
0x0E
Yellow (Red + Green)
0x0F
White (Red + Green + Blue)
Содержание CMX58886CX
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