saa7114 NXP Semiconductors, saa7114 Datasheet - Page 30

• Manufacturer Part Number: saa7114
• Description: Pal/ntsc/secam Video Decoder With Adaptive Pal/ntsc Combfilter, Vbi-data Slicer And High Performance Scaler
• Manufacturer: NXP Semiconductors

Philips Semiconductors
SAA7114_3
Product data sheet
Fig 18. Y-C
a. Y output range.
255
235
128
“ITU Recommendation 601/656” digital levels with default BCS (decoder) settings DCON[7:0] = 44h, DBRI[7:0] = 80h and
DSAT[7:0] = 40h.
Equations for modification to the Y-C
Luminance:
Chrominance:
It should be noted that the resulting levels are limited to 1 to 254 in accordance with “ITU Recommendation 601/656” .
16
0
B
-C
8.1.3.3 Brightness Contrast Saturation (BCS) control and decoder output levels
LUMINANCE 100 %
R
range for scaler input and X port output
Y
OUT
C
The resulting Y (CVBS) and C
following functions:
R
001aac241
C
•
•
•
•
=
white
B OUT
black
Chrominance saturation control by DSAT7 to DSAT0
Luminance contrast and brightness control by DCON7 to DCON0 and
DBRI7 to DBRI0
Raw data (CVBS) gain and offset adjustment by RAWG7 to RAWG0 and
RAWO7 to RAWO0
Limiting Y-C
“ITU Recommendation 601/656” .
Int
DCON
----------------- -
=
68
Int
B
DSAT
---------------
B
-C
64
Y
-C
R
–
levels via BCS control I
R
b. C
128
255
240
212
128
or CVBS to the values 1 (minimum) and 254 (maximum) to fulfil
44
16
Rev. 03 — 17 January 2006
0
(
C
R
B
+
,
C
C
output range.
DBRI
B
B
-COMPONENT
–
B
128
-C
R
)
signals are fed to the BCS block, which contains the
+
blue 100 %
blue 75 %
colorless
yellow 75 %
yellow 100 %
128
2
C-bus bytes DBRI, DCON and DSAT.
001aac480
PAL/NTSC/SECAM video decoder
c. C
255
240
212
128
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
44
16
0
R
output range.
C
R
-COMPONENT
SAA7114
red 100 %
red 75 %
colorless
cyan 75 %
cyan 100 %
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