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APPENDIX
IC DESCRIPTION
5-3 DDP3315C
(1) General Description
1. Intr
oduction
The DDP 3315C is a mixed signal single-chip digital
display and deflectionprocessor, designed for high-
quality back-end applications in double scan and
HDTV TV sets with 4:3 or 16:9 picture tubes. Its inter-
faces qualifiesthe IC to be combined with state of the
art digital scan rate converters as well as analog
HDTV sources. It contains the entire digital video com-
ponent and deflectionprocessing and all analog inter-
faces to display the picture on a CRT.
The main features are:
Video Processing
– linear horizontal scaling (0.25 ... 4), as well as
nonlinear horizontal scaling "panor a ma vision"
– dynamic black level expander
– luma transient improvement (LTI)
– dynamic peaking
– color transient improvement (CTI)
– programmable RGB matrix
– black stretch, blue stretch, gamma correction via
programmable NCE on RGB
– two analog double scan inputs with fastblanking
(one RGB and one RGB/YC
(2) Block Diagram
LLC
Clock
27/32
enera-
G
54 MHz
tor
Y /
Input
656 YUV
Interface
C
C
r
b
4:2:2/4:1:1
2
I
C
SDA
Interface
SCL
general
purpose
PWM
PWM1/2
C
/YP
P
selectable)
r
b
r
b
Upcon-
Y
Y
Picture
version/
U
U
Improv-
V
scaling
V
ment
EHT /
Histo-
gramm
Sync
Display-
V
Freq.
Process-
H
Doubling
ing
FIFO
2H/2V
Controlling
(1H/1V)
– average and peak beam current limiter
– automatic picture tube adjustment (cutoff, drive)
– histogram calculation
Deflection Pr ocessing
– scan velocity modulation output
– digital EHT compensation for vertical / east-west
– soft start/stop of H-drive
– vertical angle and bow correction
– differential vertical outputs
– vertical zoom via deflection
– horizontal and vertical protection circuit
– horizontal frequency for VGA/SVGA/1080I
– black switch off procedure
– supports horizontal and vertical dynamic focus
Miscellaneous
– selectable ITU-R 601 4:1:1 / 4:2:2 YC
double scan ITU-R 656 input at 54MHz LLC
– selectable 27/32/54MHz MHz line-locked clock input
– crystal oscillator for horizontal safety
– picture frame generator
– hardware for simple 50/60 Hz to 100/120 Hz conver-
sion (display frequency doubling)
– 80PQFP package, 5V analog and 3.3V digital sup-
ply
SVM
SVM
Y
Matrix /
R
Video
U
G
PFG /
DAC
V
B
NCE
Sawtooth/
V
Parabola
V
EW
Generation
H-Drive
H
H
Generation
HFLB
11
analog
RGB -
Matrix
Analog
R
Tube
R
RGB
G
Control
G
B
Switch
B
H/V
H
V
dynamic
&
EW
focus
V
Security
H
Unit
VPROT HSAFETY
DFVBL PWMV
C
input or
r
b
P
r
Y
Input
P
b
FBL
R
G
Output
B
Sense
Input
VERT+
VERT-
E/W
HOUT
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