Search by Tags

VGA (Robin, Woodpecker)

 
Applicable for

Article updated at 27 Sep 2012

The CoM Express connector specification defines possible pins for VGA and other Video outputs like CVBS, Component video and S-video.

On the Robin module those signals are available, on Woodpecker not. If on Woodpecker VGA is needed, a LVDS to VGA adaptor or (easier) a SDVO to VGA chip must be implemented on the baseboard.

Carrier board remark for Robin

For the VGA and other Video outputs like CVBS, Component video and S-video 150R load resistors to GND are needed on a carrierboard. Otherwise the CH7022 doesn't output the signals. The following signals need the 150R resistor if VGA output is used:

  • B89: VGA_RED
  • B91: VGA_GRN
  • B92: VGA_BLU

HSYNC, VSYNC and I2C signals don't need the 150R resistor.

The following signals need the 150R resistor if the according output is used:

  • B97 TV_DAC_A
  • B98 TV_DAC_B
  • B99 TV_DAC_C