American Megatrends Atlas PCI-II, User Manual

Page: 27 / 93

Chapter 1 Hardware Installation 21
Step 5 Attach Cables,
Continued
J42 Green PC Monitor J42 is a 10-pin connector that can be used
to attach your monitor to the motherboard to allow
AMIBIOS to conserve monitor power. If the VGA
card in your computer is not DPMS-aware (Display
Power Management Services), this connector
provides a way to conserve monitor power. When
AMIBIOS enters a power conserving mode, the
motherboard logic signals the monitor to enter Sleep
mode. This works if the monitor is DPMS-aware.
Almost all newer PCI VGA cards support DPMS
through the VGA BIOS. The computer enters Sleep
mode, AMIBIOS makes a DPMS call to the VGA
BIOS. The VGA BIOS then signals the monitor to
enter Sleep mode.
If you are using a PCI VGA card,
you probably do not need to use this connector .
The J42 pinout is:
Pin Signal
Description
Pin Signal Description
1 N/C 2 N/C
3 N/C 4 N/C
5 TTL output for
SYNC enable
6 Open Collector output for HSYNC
control
7 N/C 8 Open Collector output for VSYNC
control
9 N/C 10 GND
The J42 connector pins are arranged as follows:
1 2
3 4
5 6
7 8
9
10
Cont’d