System Reset Connector - Matrox Helios Series Installation And Hardware Reference

138 Appendix B: Technical information
Pin Signal
A18 3.3 V
A19 GND
A20 LVTTL_AUX_IN0
A21 LVTTL_AUX_IN2
A22 LVTTL_AUX_IN4
A23 LVTTL_AUX_IN6
A24 CTRL_AUX_IN0-1
A25 CTRL_AUX_IN4-5
Description
3.3 V power.
Ground.
Auxiliary input 0 for an
unspecified acq. path.
Auxiliary input 2 for an
unspecified acq. path.
Auxiliary input 4 for an
unspecified acq. path.
Auxiliary input 6 for an
unspecified acq. path.
LVDS/TTL selector. for auxiliary
input 0 and 1.
LVDS/TTL selector for auxiliary
input 4 and 5.

System reset connector

The system reset connector is a standard, 0.1" spacing, 8-pin male connector, used
to reset the motherboard if the reset button is pressed or the Watchdog circuitry
of Matrox Helios detects abnormal Host inactivity. The system reset connector's
pin assignment is as follows. Note that pin 1 is denoted with the triangular etching
in the image.
Pin pair Pin
A 1
2
B 1
2
C 1 and 2
D 1 and 2
Pin Signal
B18 3.3 V
B19 GND
B20 LVTTL_AUX_IN1
B21 LVTTL_AUX_IN3
B22 LVTTL_AUX_IN5
B23 LVTTL_AUX_IN7
B24 CTRL_AUX_IN2-3
B25 CTRL_AUX_IN6-7
D C B
Matrox Helios eA/XA
Signal Description
RESET_MB Reset signal output (usually to motherboard).
GND_MB Motherboard active reset level (usually ground).
RESET_BUTTON Reset signal input (usually from Reset button).
GND_MB Motherboard active reset level (usually ground).
- Reserved.
- Reserved.
Description
3.3 V power.
Ground.
Auxiliary input 1 for an
unspecified acq. path.
Auxiliary input 3 for an
unspecified acq. path.
Auxiliary input 5 for an
unspecified acq. path.
Auxiliary input 7 for an
unspecified acq. path.
LVDS/TTL selector for auxiliary
input 2 and 3.
LVDS/TTL selector for auxiliary
input 6 and 7.
A