參數(shù)資料
型號(hào)： SAB9083H
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 畫(huà)面疊加
英文描述： Circular Connector; No. of Contacts:37; Series:JT02R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:14; Circular Contact Gender:Socket; Circular Shell Style:Box Mount Receptacle; Insert Arrangement:14-35
中文描述： PICTURE-IN-PICTURE IC, PQFP100
封裝： 14 X 20 X 2.80 MM, PLASTIC, QFP-100
文件頁(yè)數(shù)： 10/24頁(yè)
文件大?。?/td> 104K
代理商： SAB9083H
1999 Nov 12
10
Philips Semiconductors
Preliminary specification
Multistandard Picture-In-Picture (PIP)
controller
SAB9083
MPIPON (
DOUBLE WINDOW
)
Bit MPIPON is used to switch the main channel PIP on
(logic 1) or off (logic 0).
SPIPON
Bit SPIPON is used to switch the subchannel PIPs on
(logic 1) or off (logic 0).
P
RIO
TheprioritybitdecideswhetherthemainchannelPIP(Prio
set to logic 0) or the subchannel PIP (Prio set to logic 1)
will be on top when both PIPs overlap.
S1FLD
If S1FLD is set to logic 0, two fields are used for the live
PIP. When a 50/60 Hz or a 60/50 Hz mode is detected, the
SAB9083 automatically switches to the 1-Field mode
(1-Field resolution vertically).
If S1FLD is set to logic 1, only one field is used. This
causes joint line errors but saves memory. This bit should
not be set in normal modes.
SF
REEZE
With SFreeze set to logic 1, the current live subchannel
PIP will be frozen. If set to logic 0, it is unfrozen.
A
LG
O
FF
In double window mode, precautions are taken to prevent
a joint line error. Under some conditions, this feature
should be switched off. This can be realized by setting this
bit to logic 1. Normally, bit AlgOff should be set to logic 0.
Bit SV3, when set to logic 0, can overrule the AlgOff bit.
It is recommended to set SV3 to logic 1.
DN
ONINT
Innormalmode(thisbitislogic 0),theSAB9083calculates
whether a signal is non-interlaced and reacts accordingly.
With bit DNonint set to logic 1, the display channel is
forced into the non-interlaced mode. In the non-interlaced
mode, only one field is used during the processing of the
PIPs.
P
IP
M
ODE
The PIP modes for the SAB9083 are shown in Table 2.
Table 2
PIP modes
SHR
ED AND
SVR
ED
(
DOUBLE WINDOW
)
Bits SHRed<5:0> and SVRed<6:0> determine the
reduction factor in the double window mode.
The horizontal reduction is equal to SHRed/96; the vertical
reduction is equal to SVRed/96. SHRed should lie in the
range from 0 to 48; if set to logic 0, the PIP is off. SVRed
should lie in the range from 0 to 96; if set to logic 0, the PIP
is off.
When the horizontal reduction factor is 48/96,
704 samples are processed. The horizontal reduction
factor is linear; therefore, when it is 24/96, 352 samples
are processed. The same holds for the vertical reduction
factor but then with the number of lines. For NTSC, the
number of processed lines can be calculated from
SVRed/96
×
228 lines; for PAL, this is SVRed/96
×
276
lines.
SHR
ED AND
SVR
ED
(
REPLAY
)
In replay mode, the range of SHRed and SVRed is limited
as follows: SHRed = 12; SVRed = 24, 16 or 12. This leads
toafixedhorizontalreductionfactorof
1
8
;andtoavariable
vertical reduction factor of
1
4
,
1
6
or
1
8
.
Note that the resulting replay PIP can be expanded by
using SHBlow and/or SVBlow.
SHP
IC AND
SVP
IC
(
MULTISTANDARD
PIP
MODES
)
Bytes SHPic and SVPic control the picture size in the
multistandard PIP modes. The horizontal range
is 256 steps of four 28 MHz clock periods. The vertical
range is 256 steps of 1 line/field.
In the double window and replay PIP modes, the picture
size is determined by the reduction factors (SHRed and
SVRed) and bits HBlow and VBlow.
PipMode<2:0>
MODE
000
001
010
011
100
111
double window mode
replay PIP
multistandard PIP 3
multistandard PIP 6
reserved
multistandard PIP 6 split
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