參數(shù)資料
型號(hào)： 935247890551
廠商： NXP SEMICONDUCTORS
元件分類： 畫(huà)面疊加
英文描述： PICTURE-IN-PICTURE IC, PQFP100
封裝： PLASTIC, SOT-317-2, QFP-100
文件頁(yè)數(shù)： 2/35頁(yè)
文件大?。?/td> 228K
代理商： 935247890551
1996 Aug 07
10
Philips Semiconductors
Preliminary specication
Picture-In-Picture (PIP) controller
SAB9077H
Fig.3 Display fine positioning.
handbook, full pagewidth
MBH503
BGHFP
BGVFP
MAIN CHANNEL
SUB CHANNEL
SAHFP
MAVFP
238 lines (NTCS)
or
286 lines (PAL)
MAHFP
SAVFP
696 pixels
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 I2C-bus. An overview of
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.
DATA TRANSFER
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
× Hsync (both display and acquisition).
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, I2C-bus bit) and the other
is a small form of data reduction to come from 8-bit to 6-bit
(SMART6, I2C-bus bit). If both bits are set to logic 0 the
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.
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