Pwr_Ok Signal; Power Status Leds D20-D25; Power-Up Control - Congatec conga-QEVAL/Qseven 2.0 User Manual

4.2.1

PWR_OK Signal

The PWR_OK (PWGIN) signal is a HIGH active input from the main power supply to the module and indicates whether the power is good. The
Jumper X43 on the QEVAL 2.0 provides the ability to choose different settings for this signal.
Configuration
Jumper X43
1 - 2 PWGIN generated by Pull-up resistor. (default)
3 - 4 PWGIN generated by ATX power source.
5 - 6 PWGIN generated by DC/DC converter.
Connector Type
X43: 2.54mm grid Jumper.
4.2.2

Power Status LEDs D20-D25

The six green status LEDs D20-D25 indicate different power states of the QEVAL 2.0. See table below for more information.
LEDs D20-D25 Power state
No power applied.
All Off
+5V standby
D20
D21 +5V
+3.3V standby
D22
D23 +3.3V
+5V standby input
D24
+12V input
D25
4.2.3

Power-up Control

The native system Power-up support of Qseven
the ATX power supply on or off. When using the SUS_S3#' signal, the Qseven
When the system goes to Suspend to RAM (S3) or Soft Off (S5), the 'SUS_S3#' signal is asserted by the chipset of the module. Through the
use of an inverter, the low active 'PS_ON#' signal goes high and switches off the ATX power supply. On the contrary, if the system resides in a
power-down system state, any system wake-up event invokes the chipset of the module to deassert the 'SUS_S3#' signal. This transitions the
system to Full-On (S0).
The way Suspend to RAM is implemented on a Qseven
Copyright © 2014 congatec AG
modules uses the 'SUS_S3#' signal to control the 'PS_ON#' signal, which is used to switch
®
module is capable of supporting Suspend to RAM (S3).
®
module may differ depending on the module manufacturer. For this reason, it is
®
QEV2m11
PWGIN Con g.
(X43)
1 2
3 4
5 6
D20-D25
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