SSD1783 Solomon Systech, SSD1783 Datasheet - Page 40

• Manufacturer Part Number: SSD1783
• Description: LCD Driver
• Manufacturer: Solomon Systech

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11.5 Set Color Look Up Table (CE H)
This command is used to set the color look up table (LUT) for different pixel mode. The LUT has 32 6-bit
entries, the number of entry to write depends on different pixel mode, the 6 LSB of each of the data byte
following this command correspond to one entry of the LUT.
Pixel mode
18 or 16 bit/pixel
12 bit/pixel
8 bit/pixel
11.6 Set Display Control (CA H)
This command is used to select the duty ratio of the IC. All available driving duty can be selected using
this command. The driving duty can be changed from 1/32 to 1/160
11.7 Set Area Scroll (AA H)
This command specifies the portion of screen for scrolling. The command sets the starting block address, finishing
block address, number of specific blocks and the area scroll mode of the area scrolling. Please be noted that the
starting block address should be smaller than the finishing block address.
The block address increment direction is started at 0
of the fixed area. Similarly, the block address decrement direction is started at the 41st block such that the GDDRAM
address corresponds to the bottom fixed area. The remaining block address excluding the top and the bottom fixed
areas are assigned to the scroll plus the background areas.
The set area scroll function is divided into four parts.
Part I -Specify the top block address of the scroll + the background areas. Specify the 0
scroll or the whole screen scroll. The scroll start block address is also set at this top block address until the scroll start
set command is executed.
Part II – Specify the bottom address of the scroll + background areas. Specify the 41
whole screen scroll.
Part III – Specify number of scrolled blocks = number of (Top fixed area + scroll area) blocks –1. When the bottom
scroll or whole screen scroll is chosen, the resulted value is identical to the value stated in part II.
Part IV
Specify the area scroll type. Altogether there are four types of area scroll. Please refer to Table 13 for
detail.
P41
0
0
1
1
Table 13 - Area scrolling selection modes
Solomon Systech
P40
0
1
0
1
Types of Area Scroll
Center Screen Scroll
Top Screen Scroll
Bottom Screen Scroll
Whole Screen Scroll
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No. of entry
32
16
10
Note
32 data byte (6 LSB of each) define the LUT
16 data byte (6 LSB of each) define the LUT
10 data byte (6 LSB of each) define the LUT with
1
Blue will use 1
correspondingly, and will use 9
01 and 10 correspondingly.
st
8 byte define all 8 colors of Red and Green, while
th
block such that the GDDRAM address corresponds to the top
Jul 2005
st
and 8
th
P 40/79 Rev 1.4
byte for data 00, 11
th
and 10
st
block for the bottom or the
th
block for the top screen
th
byte for data
SSD1783 Series
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