GMZAN3 Datasheet, PDF (38/53 Pages) List of Unclassifed Manufacturers – XGA ALALOG INTERFACE LCD MONITOR CONTROLLER

TMG1 TMG2
PPWR Output
Panel Data and Control Signals
PBIAS Output
gmZAN3 Preliminary Data Sheet
TMG3 TMG4
<State0>
<State1> <State2>
POWER_SEQ_EN = 1
<State3>
<State2> <State1> <State0>
POWER_SEQ_EN = 0
Figure 24.
Panel Power Sequencing
4.8.4 Output Dithering
The Gamma LUT outputs a 10-bit value for each color channel. This value is dithered down to either 8-
bits for 24-bit per pixel panels, or 6-bits for 18-bit per pixel panels.
The benefit of dithering is that the eye tends to average neighboring pixels and a smooth image free of
contours is perceived. Dithering works by spreading the quantization error over neighboring pixels both
spatially and temporally. Two dithering algorithms are available: random or ordered dithering. Ordered
dithering is recommended when driving a 6-bit panel.
All gray scales are available on the panel output whether using 8-bit panel (dithering from 10 to 8 bits per
pixel) or using 6-bit panel (dithering from 10 down to 6 bits per pixel).
4.9 Four Channel LVDS Transmitter (for gmZAN3L Only)
The gmZAN3L implements the industry standard flexible four channel LVDS transmitter. The LVDS
transmitter can support the following:
• Single pixel mode
• 24-bit panel mapping to the LVDS channels (see Table 14)
• 18-bit panel mapping to the LVDS channels (see Table 15)
• Programmable channel swapping (the clocks are fixed)
• Programmable channel polarity swapping
C0523-DAT-01G
38
Genesis Microchip Confidential
http://www.genesis-microchip.com
July 2003