sab9077h NXP Semiconductors, sab9077h Datasheet - Page 10

• Manufacturer Part Number: sab9077h
• Description: Picture-in-picture Pip Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PIP modes
The two independent acquisition channels can also be
controlled independently on the display side. A wide
variety of modes is possible but a subset of 7 modes is
fixed and can be set easily by the I
the preconditioned modes is given in Table 3. For all PIP
modes the main and sub-display fine positioning must be
set to obtain a display configuration.
D
The internal data path has an 8-bit resolution and 4 : 1 : 1
data format. The communication to the external VDRAM
takes place at 864
1996 Aug 07
handbook, full pagewidth
ATA TRANSFER
Picture-In-Picture (PIP) controller
H
sync
BGHFP
(both display and acquisition).
BGVFP
2
C-bus. An overview of
MAHFP
Fig.3 Display fine positioning.
MAVFP
MAIN CHANNEL
696 pixels
SAHFP
10
Approximately 800 8-bit words can be fetched from the
external VDRAM in one display line which is not enough to
display one complete display line with true 8-bit resolution.
Two methods of reducing data are available. One is simply
skipping the 8-bit to 6-bit (SKIP6, I
is a small form of data reduction to come from 8-bit to 6-bit
(SMART6, I
device is in true 8-bit resolution mode. For the twin PIP
mode the main channel is not placed in the VDRAM but in
an internal buffer, 8 bit resolution is then possible for both
PIPs.
2
238 lines (NTCS)
C-bus bit). If both bits are set to logic 0 the
286 lines (PAL)
SAVFP
or
SUB CHANNEL
Preliminary specification
2
C-bus bit) and the other
MBH503
SAB9077H