DS90UR916Q Datasheet, PDF (36/41 Pages) Texas Instruments – 5 - 65 MHz 24-bit Color FPD-Link II Deserializer with Image Enhancement

USING IMAGE ENHANCEMENT FEATURES
The DS90UR916Q offers two FRC dithering blocks and one
White Balance lookup table. Depending upon the color depth
of the source data, display and LUT contents, these blocks
may be independently enabled or disabled in various combi-
nations. Refer to Table 11 below for recommendations.
TABLE 11. Enabling Image Enhancement Features
Source White Balance LUT Display FRC1 FRC2
24-bit
24-bit
24-bit Disabled Disabled
24-bit
24-bit
18-bit Disabled Enabled
24-bit
18-bit
18-bit Enabled Disabled
18-bit
24-bit
24-bit Disabled Disabled
18-bit
24-bit
18-bit Disabled Enabled
18-bit
18-bit
18-bit Disabled Disabled
If the white balance feature is to be used all 3 LUTs must be
fully loaded after initial power-up. LUTs must be loaded se-
quentially — first Red, second Green, third Blue — and all 256
values must be loaded into each LUT. After power-up the
following procedure must be followed.
1. Power-on (reload = disable by default)
2. Enable WB
3. Set page Register RED
4. Initial RED LUT load (all 256 bytes) '916 will self clear
page register
5. Set page Register GREEN
6. Initial GREEN LUT load (all 256 bytes)'916 will self clear
page register
7. Set page Register BLUE
8. Initial BLUE LUT load (all 256 bytes) '916 will self clear
page register
Once all LUTs are loaded, ‘916 will enable the WB output
To reload LUT contents, after the initial load at power-up,
the following procedure must be followed.
1. Enable RELOAD
2. Set appropriate page register (RED, GREEN or BLUE)
3. Load new LUT values (any sequence, any order, any
number)
4. Load appropriate R, G or B 255 value to clear page
register
5. Set appropriate page register (RED, GREEN or BLUE)
6. Load new LUT values (any sequence, any order, any
number)
7. Load appropriate R, G or B 255 value to clear page
register
8. Set appropriate page register (RED, GREEN or BLUE)
9. Load new LUT values (any sequence, any order, any
number)
10. Load appropriate R, G or B 255 value to clear page
register
11. Disable RELOAD
ALTERNATE COLOR / DATA MAPPING
Color Mapped data Pin names are provided to specify a rec-
ommended mapping for 24-bit Color Applications. Seven [7]
is assumed to be the MSB, and Zero [0] is assumed to be the
LSB. While this is recommended it is not required. When con-
necting to earlier generations of FPD-Link II Ser and Des
devices, a color mapping review is recommended to ensure
the correct connectivity is obtained. Table 12 provides exam-
ples for interfacing to 18-bit applications with or without the
video control signals embedded. The DS90UR916Q Des also
provides additional flexibility with the MAP_SEL feature as
well.
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