VSP 94x2A
DATA SHEET
Software
Hardware (940x)
LBSLAA
LBELAA
Controller
part
Measurement
Part
Y
LBFORMAT
LBSUBTITLE
LBTOPTITLE
zooming parameters
Horizontal and/or
Vertical
YUVin
YUVout
Resizing
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.
P
2
Depending on the I C bus register LBSUB different
LBVWSTU
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.
L
LBVWST
LBVWEND
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).
4*LBHWST
4* LBHWEND
Fig. 2–28: Measurement Windows
A controller software and its description is available
upon request.
20
Aug. 16, 2004; 6251-552-1DS
Micronas
MICRONAS [ MICRONAS ]
