VSP9402A Datasheet, PDF (20/126 Pages) Micronas – PRIMUS Powerful Scan-Rate Converter including Multistandard Color Decoder

VSP 94x2A
DATA SHEET
Hardware (940x)
Measurement
Y
Part
LBSLAA
LBELAA
LBFORMAT
LBSUBTITLE
LBTOPTITLE
zooming parameters
YUVin
Horizontal and/or
Vertical
Resizing
YUVout
Software
Controller
part
Fig. 2–27: HW/SW Partitioning
The letterbox detection block works only at a data rate
of 13.5 MHz. Due to the fact, that the input data rate at
channel-mux output can be 13.5 MHz, 20.25 MHz or
40.5 MHz, the input signal has to be downsampled.
Depending on the I²C bus register LBSUB different
modes are possible (Downsample 1, 1.5, 3). As digital
656input data are already in 13.5 MHz format, no
downsampling should be used (LBSUB=0). For CVBS,
YUV and RGB signals (if DECTWO=1) a downsam-
pling of 1.5 (LBSUB=2) is required.
In principle the input picture is separated in one upper
and one lower part. The measurement windows are
defined by the parameters LBVWSTUP, LBV-
WENDUP (upper vertical measurement window),
LBVWSTLO, LBVWENDLO (lower measurement win-
dow) and LBHWST, LBHWEND (horizontal measure-
ment window).
A controller software and its description is available
upon request.
4*LBHWST
4* LBHWEND
Fig. 2–28: Measurement Windows
20
Aug. 16, 2004; 6251-552-1DS
Micronas