DS90UR916Q_13 Datasheet, PDF (37/45 Pages) Texas Instruments – 5 - 65 MHz 24-bit Color FPD-Link II Deserializer with Image Enhancement

DS90UR916Q
www.ti.com
SNOSB46E – MARCH 2011 – REVISED APRIL 2013
LVDS INTERCONNECT GUIDELINES
See AN-1108 (SNLA008) and AN-905 (SNLA035) for full details.
• Use 100Ω coupled differential pairs
• Use the S/2S/3S rule in spacings
– – S = space between the pair
– – 2S = space between pairs
– – 3S = space to LVCMOS signal
• Minimize the number of Vias
• Use differential connectors when operating above 500Mbps line speed
• Maintain balance of the traces
• Minimize skew within the pair
• Terminate as close to the TX outputs and RX inputs as possible
Additional general guidance can be found in the LVDS Owner’s Manual - available in PDF format from the TI
web site at: www.ti.com/lvds
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 combinations. Refer to Table 11 below for recommendations.
Source
24-bit
24-bit
24-bit
18-bit
18-bit
18-bit
Table 11. Enabling Image Enhancement Features
White Balance LUT
24-bit
24-bit
18-bit
24-bit
24-bit
18-bit
Display
24-bit
18-bit
18-bit
24-bit
18-bit
18-bit
FRC1
Disabled
Disabled
Enabled
Disabled
Disabled
Disabled
FRC2
Disabled
Enabled
Disabled
Disabled
Enabled
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 sequentially — 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
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