Controlling the System via SMBus
MEN Mikro Elektronik GmbH
64
20BL50S00 E2 – 2014-12-10
SATA LED Register (0x42)
Table 20.
SMB 0x42
Bit
Direction
Signal
Default
Value
Description
Group
7
-
reserved
6
In
SATA_2_HP_IN
1
Signal to detect a SATA hot plug request.
SATA
0=
The bit is '0' if the SATA shuttle
is closed.
1=
The bit is '1' if the SATA shuttle’s
handle is opened to eject the
SATA shuttle.
5
Out
SATA_2_
LOCATE_LED
1
Signal to show the location of a SATA
device at the front panel.
SATA
0=
The LED can be enabled by
setting this bit to '0'.
1=
The default value is '1' and the
locate LED is off.
4
Out
SATA_2_ERROR
_HP_LED
1
LED to show the life status of the
connected HDD/SSD and is used to show
if the storage device is removed by
software from the system and can be
ejected.
SATA
0=
The LED can be enabled by
setting this bit to '0'.
1=
The default value is '1' and the
error and hot plug LED is off.
3
-
reserved
-
2
In
SATA_1_HP_IN
1
Signal to detect a SATA hot plug request.
SATA
0=
The bit is '0' if the SATA shuttle
is closed.
1=
The bit is '1' if the SATA shuttle's
handle is opened to eject the
SATA shuttle.
1
Out
SATA_1_
LOCATE_LED
1
Signal to show the location of a SATA
device at the front panel.
SATA
0=
The LED can be enabled by
setting this bit to '0'.
1=
The default value is '1' and the
locate LED is off.
