CS7666-KQ データシートの表示（PDF） - Cirrus Logic
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CS7666-KQ Datasheet PDF : 42 Pages
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CS7666
Scaler Control (04h)
7
6
res
res
Reserved
5
4
3
2
1
0
PAL
TRUE_7666 CUSTOM
MODE2
MODE1
MODE0
R/W
R/W
R/W
R/W
MODE[2:0]
Selects 1 of 8 pre-defined scaling ratios.
CUSTOM
When set, scaler uses custom values held in registers 2Dh-2Fh.
TRUE_7666
When set, pin 54 is ignored and the CS7666 is in native mode. The default is CS7665 compat-
ibility mode. (pin 54 selects 5:4 scaler.)
PAL
Logic 1 selects PAL timing for HREF and VREF. Default is NTSC.
Feature Control Register (05h)
7
6
5
4
3
2
1
0
res
res
res
CHROFF
LUMOFF
GAMON
AWB
res
Reserved
R/W
R/W
R/W
R/W
Reserved
AWB
GAMON
LUMOFF
CHROFF
The Automatic White Balance procedure is initiated by pointing to a white scene and setting this
bit high. The bit will return a logic high while the AWB procedure is in progress. Setting this bit
low will have no effect. This bit will always be read as a “0” when the AWB is not in progress.
The gamma correction from the gamma ram look up table is applied to the video signal in R-G-
B space when this bit is set high. The gamma ram is a fully user programmable, 256 entry look
up table.
Setting LUMOFF bit high disables the luma peaking filter.
Setting the CHROFF bit high disables the chroma low-pass filter for minimizing color aliasing.
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DS302PP1
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