Corvalent Gator Mini-ITX, Installation Manual

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Gator Mini-ITX – Installation Guide
Panel Power Sequencing
This section provides details for the power sequence timing relationship of the panel power, the backlight enable and
the LVDS data timing delivery. In order to meet the panel power timing specification requirements, two signals,
PANELVDDEN and PANELBKLTEN are provided to control the timing sequencing function of the panel and the
backlight power supplies.
Panel Power Sequence States
A defined power sequence is recommended when enabling the panel or disabling the panel. The set of timing
parameters can vary from panel to panel vendor, provided that they stay within a predefined range of values. The
panel VDD power, the backlight on/off state and the LVDS clock and data lines are all managed by an internal
power sequencer.
A requested power-up sequence is only allowed to begin after the power cycle delay time requirement is met.
Back Light Inverter Control
The GMCH offers integrated PWM for TFT panel Backlight Inverter control. Other methods of control are specified
below:
•
SMBus-based Backlight Brightness Control
•
GMBus-based Backlight Brightness Control
•
PWM – based Backlight Brightness Control
•
DBL(Display Brightness Link) –to- VDL (Video Data Link) Power Sequencing.
Concurrent and Simultaneous Display
The GMCH has two independent pipes, each with its own timing generator and dot clock, and thus is able to support
two displays concurrently. Windows 98* and Windows 2000* have enabled support for multi-monitor display.
There are two types of multi-monitor solutions: concurrent and simultaneous.
Concurrent displays different data on two screens whereas simultaneous displays the same information on both
displays. The GMCH also supports a combination of concurrent and simultaneous displays.
The pin out of the LVDS connector J4 can be seen on Table A20 , the pin out of the LVDS Backlight connector J5
can be seen on Table A20 and the pin out of the VGA DB15 connector J3A is the industry standard.
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