sab9075h NXP Semiconductors, sab9075h Datasheet - Page 21

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

Philips Semiconductors
Table 5 Register 0; PIP mode control register
Notes
1. With PIPON in OFF mode the fast blanking signal is made inactive. All other functions will operate as if the circuit
2. With MANRED set to logic 0 the reduction factors will be set automatically, dependent on the PIP mode and the
3. With MANRED set to logic 1 the calculation of the reduction factors is not carried out and should be set by Register 4
4. MASPECT and SASPECT are used in automatic mode (MANRED) to indicate the type of input signals, together with
5. The MODE bits set the PIP mode. For the multi-PIP modes the frozen PIPs are set to the 30% grey colour. Once a
Table 6 Register 1; general control register
Notes
1. HPOS and VPOS determine the general location of the sub-PIP on the screen. HPOS only operates in modes SPS,
2. MFREEZE will freeze the main-picture, and SFREEZE will freeze the sub-picture selected by the live select bits as
3. BCOLPOL can invert the border polarity of U and V.
4. MVFILT and SVFILT set the type of vertical filtering for the main and sub-channel. Mode 1 means that diagonal lines
February 1995
Picture-in-Picture (PIP) controller for NTSC
were in operational mode.
aspect ratio bits of main and sub (bits 5 and 4). Table 4 indicates which bits should be set to obtain a certain PIP
mode.
(see Table 9). Only combinations with MANRED set to logic 0 are guaranteed.
MODE the PIP mode can be set (see Table 4). In manual mode these bits are ignored.
PIP has been made live it will always display the last video data.
SPL, DP, MP3 and MP4. VPOS only operates in modes SPS and SPL. The default location of the sub-pictures will
be left top.
in Register 8 (see Table 13).
are linearized, in Mode 0 this option is switched OFF. This filtering mode only operates with vertical reduction
factors
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
1
3
and
PIPON
MANRED
MASPECT
SASPECT
MODE(3)
MODE(2)
MODE(1)
MODE(0)
HPOS
VPOS
MFREEZE
SFREEZE
BCOLPOL
MVFILT
SVFILT
MODE
MODE
1
4
(1)
(1)
.
(4)
(4)
(5)
(5)
(5)
(5)
(2)
(4)
(3)
(2)
(4)
logic 0 = PIP function is OFF
logic 0 = automatic reduction factors
main-aspect ratio; 0 = 4 : 3; 1 = 16 : 9
sub-aspect ratio; 0 = 4 : 3; 1 = 16 : 9
PIP mode
PIP mode
PIP mode
PIP mode
logic 0 = left; logic 1 = right
logic 0 = top; logic 1 = bottom
logic 0 = main-freeze is OFF; logic 1 = main-freeze is ON
logic 0 = sub-freeze is OFF; logic 1 = sub-freeze is ON
not used
border UV polarity; logic 0 = +(B Y), +(R Y); logic 1 = (B Y), (R Y)
main-vertical filter mode; logic 0 = Mode 0; logic 1 = Mode 1
sub-vertical filter mode; logic 0 = Mode 0; logic 1 = Mode 1
21
(1)
; logic 1 = PIP function is ON
(2)
; logic 1 = manual reduction factors
RESULT
RESULT
Preliminary specification
SAB9075H
(3)