To connect the 16-bit RGB data bus to a 24-bit or 18-bit RGB data bus of a display glass follow the recommended connection to evenly spread the color coverage.
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16-bit (5-6-5) RGB Display Controller Data Bus |
18-bit (6-6-6) RGB Display Data Bus |
24-bit (8-8-8) RGB Display Data Bus |
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Red[4:0] |
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Controller Red[4:0] |
Display Red[5:1] |
Display Red[7:3] |
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Controller Red[4] |
Display Red[0] |
Display Red[2:0] |
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Green[4:0] |
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|
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Controller Green[5:0] |
Display Green[5:0] |
Display Green[7:2] |
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Controller Green[5] |
Display Green[5] |
Display Green[1:0] |
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Blue[4:0] |
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|
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Controller Blue[4:0] |
Display Blue[5:1] |
Display Blue[7:3] |
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Controller Blue[4] |
Display Blue[0] |
Display Blue[2:0] |
To illustrate the connection take the Red for example:
To connect the Display Controller Red Data Bus to the Red data bus of a RGB Glass with 18 bit color data bus.
Connect the 5 Red signals from the display controller to the most significant bits of the glass red signals.
Controller Red[4:0] -> Display Red[5:1]
The remaining Display Red[0] signal will be connected to the most significant bit of the display controller red.
Controller Red[4] -> Display Red[0]
To connect the Display Controller Red Data Bus to the Red data bus of a RGB Glass with 24 bit color data bus.
Connect the 5 Red signals from the display controller to the most significant bits of the glass red signals.
Controller Red[4:0] -> Display Red[7:3]
The remaining Display Red[2:0] signals will be connected to the most significant bit of the display controller red.
Controller Red[4] -> Display Red[2]
Controller Red[4] -> Display Red[1]
Controller Red[4] -> Display Red[0]
Doing this spreads out the color coverage while at the same time pure black and pure white colors are achieved.