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Video Interfaces
VL-EPU-3311 Reference Manual
46
LVDS Backlight Connector
Figure 20 on page 44 shows the location and pin orientation of the LVDS back light connector.
Table 12 lists the pinout of the LVDS backlight connector.
Table 12: LVDS Backlight Connector Pinout
Pin
Signal Name
Function
1
LVDS_BKLT_EN
LVDS backlight enable. (5V TTL-level signal by default but
will operate at higher voltages if the LVDS_BKLT_PWR is
provided).
High = enabled, Low = disabled.
2
Signal Ground
Ground
3
LVDS_BKLT_CTRL
LVDS backlight control. (5V TTL-level signal by default but
will operate at higher voltages if the LVDS_BKLT_PWR is
provided). This is a PWM signal and the duty cycle can be
set in the BIOS Setup utility.
4
LVDS_BKLT_LOGIC_PWR
Optional backlight logic power. (Can range from +5V to +14V
and sets the high-value on the LVDS_BKLT_EN and
LVDS_BKLT_CTRL signals.)
On-board +5V power is used when this is not connected.
Cabling
An adapter cable, part number CBR-0404, is available for powering the LVDS backlight from
the Osprey board.
If your application requires a custom cable, the following information will be useful:
EPU-3311 Board Connector
Mating Connector
Molex 501568-0407
Molex 501330-0400