Balloon drives any LCD the CPU can, so, swiped from the SA1110 datasheet, The SA-1110's LCD controller has three types of displays:
- Passive Color Mode Supports a total of 3375 possible colors, displaying any of 256 colors for each frame.
- Active Color Mode Supports up to 65536 colors (16-bit). (That's TFT)
- Passive Monochrome Mode ..Supports 15 gray-scale levels.
- Display sizes up to 1024 x 1024 pixels are supported.
The LCD framebuffer is driven by the CPU copying data repeatedly to the device, so it is quite easy to use all your memory/CPU bandwidth refreshing the screen. There is a useful paper on the sums here:
There's also a DC-DC converter on board, which generates the odd bias voltage that some (particularly simple monochrome) displays need.
TCL have a custom display working with the board.
Aleph One have a number of these nifty 240x160 colour displays datasheet). An interface board has been proved and designed. It just needs laying out and building now.
Here's a page with some information about getting the 240x160 colour display to work: ACX705AKMInfo
Note (not on datasheet), forward voltage drop of LCD Backlight LED array is approx 6.75v when measured with a current of 15mA flowing though the LEDs.
Also in the pipeline are TV-out, VGA-out widgets and secondary LCD widgets. Bribes will make them happen faster. -- Steve