Kontron COMe-cSP2 Manuel d'utilisateur télécharger pdf (Page 46)

COMe-cSP2 / COMe-cSP2 Connector

ATX Mode / Single Supply Mode

ATX Mode:

By connecting an ATX power supply, PWR_OK is set to low level and VCC is off. Press the power button to enable the

ATX PSU setting PWR_OK to high level and powering on VCC. The ATX PSU is controlled by the PS_ON# signal which is

generated by SUS_S3# via inversion.

ATX Mode

State

PWRBTN#

PWR_OK

V5_StdBy

PS_ON#

VCC

high

low

high

S5 -> S0

PWRBTN Event

low -> high

high -> low

0 V-> VCC

high

low

VCC

Single Supply Mode:

In single supply mode the module will start automatically when VCC power is connected and Power Good input is open

or at high level (internal PU to 3.3V). PS_ON# is not used in singly supply mode.

To power on the module from S5 state press the power button or reconnect VCC

Single supply mode

State

PWRBTN#

PWR_OK

V5_StdBy

VCC

G3 -> S0

high

open / high

connecting VCC

high

open / high

VCC

S5 -> S0

PWRBTN Event

open / high

reconnecting VCC

- All columbs marked with an ―x‖ are not important for the specific power state.

- All ground pins have to be tied to the ground plane of the carrier board.

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Kontron COMe-cSP2 Manuel d'utilisateur Page 46

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