sab9075h NXP Semiconductors, sab9075h Datasheet - Page 9

• Manufacturer Part Number: sab9075h
• Description: Picture-in-picture Pip Controller For Ntsc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FUNCTIONAL DESCRIPTION
Acquisition area
The acquisition area is in the centre of the visible screen
area. Vertically 228 lines are sampled. Horizontally
672 Y-pixels are processed. The exact active processing
area can be fine tuned in horizontal (2 pixels/steps,
16 steps) and vertical (1 line/step, 16 steps) direction for
both main and sub-channel by the I
given numbers are pixel numbers at a 13.5 MHz data rate.
The signals, which are dependent on the I
can also be related to the H
delayed by 68 pixels.
Chrominance format
The chrominance format is 4 : 1 : 1.
The YUV signals are sampled at a rate of 27 MHz and then
filtered and subsampled to a data rate of 13.5 MHz.
February 1995
handbook, full pagewidth
Picture-in-Picture (PIP) controller for NTSC
H sync
burstkey
clamp
262.5
V sync
68
32
104
18
18
80
228
sync
FT
FT
FT
FT
, in which event they are
2
C-bus (see Fig.3). The
1/1, 1/3 and 1/4 reduction
1/2 reduction
2
C-bus registers,
Fig.3 Acquisition area.
9
It is expected that the input signals do not contain
frequencies outside the video bandwidth (Y
U
Display area
The display area is shown in Fig.4. The given numbers are
pixels at a data rate of 13.5 MHz. The signals are related
to the burstkey and the V
registers the signals can also be related to the H
The internal 13.5 MHz data rate is upsampled to the
double frequency (27 MHz) and then fed to the DACs.
The display output can be fine positioned by the I
64 steps of 4 pixels in horizontal direction and 64 steps of
1 line/field in vertical direction.
672
624
864
BW
and V
BW
= 1.125 MHz).
sync
. Dependent on the I
Preliminary specification
MBE085
SAB9075H
BW
= 4.5 MHz;
2
sync
C-bus in
2
C-bus
.