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DIGITAL-LOGIC AG SMA200 Manual V1.0
38
5.4.14. PM
Signal BUS Type Description
On Module
Termination
Ext. Ter-
mination
Needed
Max.
Length
in mm
Ohm
Matched
Length in
mm
WAKE# CMOS 3.3V
In
To wakeup the system,
this input must be pulled
to GND.
PU 1k0k
3.3V
- - - -
WD_OUT CMOS 3.3V
Out
Indicates a watchdog
timeout event with a high
level. Cleared with a
reset and at power-on.
- - - - -
SUS_S3# CMOS 3.3V
Out
Low = system is in
suspend state S3/S4/S5
(ACPI).
- - - - -
SUS_S4&5# CMOS 3.3V
Out
Low = system is in
suspend state S4/S5
(ACPI).
- - - - -
GPIO[3..0] CMOS 3.3V
I/O
General purpose I/O pin. - - - - -
RST_IN# CMOS 3.3V
In
To reset the system, this
input must be pulled to
GND.
PU 10k to
3.3V
- - - -
RST_OUT# CMOS 3.3V
Out
Goes low during the reset
phase and stays at high
in the running phase.
- - - - -
Power-Good CMOS 3.3V
In
High = feedback from the
external power supplies,
that the voltages are in
the valid ranges.
PU 10k to
3.3V
- - - -
PS_ON CMOS 3.3V
Out
High = power supply on
the baseboard is
switched on.
- - - - -
PWRBTN# CMOS 3.3V
In
To activate this signal,
the PWR_BTN# must be
pulled to GND.
PU 1k to
3.3V
BIOS_Disable#
CMOS 3.3V
In
Low = onmodule BIOs is
disabled, an external
BIOS may be connected
over LPC.
PU 1k to
3.3V
- - - -
A20M# CMOS 3.3V
In
Connect to the SuperIO's
KBC to switch between
real and protected mode.
PU 100k to
5.0V
- - - -
Speaker CMOS 3.3V
Out
Speaker
If the signals are not used:
Leave the signal open.
Remarks:
EMV/EMI filters:
Are not needed.