Kontron MARS Smart Battery Kit - Manual (Page 23)

MARS User´s Guide
11. Activating and Deactivating of the SBS
MARS
Pressing the ON/OFF button at the SBS MARS switches on the CPLD and the SBS Manager und the
voltages at the output are sourced.
Pressing the ON/OFF button for more than 4 seconds deactivates the SBS MARS.
There are 2 different standby modes to give a wide flexibility and as much energy safing as
possible. Jumper J1 changes these modes.
11.1 Standby Mode 1
This mode is completly similar to the behaviour of an ATX power supply. I. e. an inactive PS_ON
signal leads to a single supply with the 5V standby voltage at the output of SBS MARS. After
pressing the power button on the backplane all other voltages will be switched on.
Pressing the power button on the backplane more then 4 seconds (i. e. PS_ON# = 0) will switch off
all voltages, except the 5V standby.
When SBS MARS is activated and there is already an active PS_ON signal then the 5V standby is
supplied imediatelly and after a short period of time the rest of the voltages will follow.
This mode of the SBS MARS allows the usage of all common ACPI S-modes which needs either only
the 5V Standby, like S3 cold and S5 (suspend to RAM and soft off), or need a full supply of the
system, like S0 or S3 hot.
11.2 Standby Mode 0
This mode has the purpose to safe as much energy as possible. It has been created to meet the
demands of a mobile system.
In case of just the batteries are connected to the SBS MARS and the PS_ON# signal is inactive, it
will also switch off the 5V Standby to give the batteries the lowest power loss and therefore the
longest life time. In this case no voltages at all will be generated.
To return to the state where first the 5V standby is switched on and after a defined short period of
time the rest of the voltages are enabled, the ON button must be pressed and after that the PS_ON#
signal has to go active (e.g. by pressing the power button).
ACPI S-modes, which need a 5V standby like S1 to S3, are not possible in this mode of SBS MARS.
Activating and Deactivating of the SBS MARS
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