sab9075h NXP Semiconductors, sab9075h Datasheet - Page 26

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

Philips Semiconductors
Table 17 Register A; decoder format register
Notes
1. MCOLPOL and SCOPOL invert the UV video data.
2. MVSPOL and SVSPOL determine the active edge of the V
3. MHSYNC and SHSYNC determine whether the H
The exact timing of the V
reference pulse is depicted in Fig.18. A field identification
window determines whether a V
1st field or a 2nd field. This field identification window can
be inverted by the FPOL bit. If FPOL is logic 0 and an
February 1995
handbook, full pagewidth
Picture-in-Picture (PIP) controller for NTSC
be taken; if VSPOL is logic 1, the negative edge of the V
synchronization.
BIT
7
6
5
4
3
2
1
0
H
field ID (internal)
(number of pixels)
V
V
sync
sync
sync
MCOLPOL
MVSPOL
MHSYNC
MFPOL
SCOLPOL
SVSPOL
SHSYNC
SFPOL
(external)
(external)
(external)
MODE
(2)
(2)
(3)
(3)
sync
(1)
(1)
in relation to the H
43
main-UV polarity; logic 0 = original; logic 1 = inverted
main-vertical sync polarity; logic 0 = positive pulse; logic 1 = negative pulse
main-horizontal sync selection; logic 0 = burst edge; logic 1 = H
main-field polarity; inverts field identification window
sub-UV polarity; logic 0 = original; logic 1 = inverted
sub-vertical sync polarity; logic 0 = positive pulse; logic 1 = negative pulse
sub-horizontal sync selection; logic 0 = burst edge; logic 1 = H
sub-field polarity, inverts field identification window
sync
is being handled as a
2nd field
Fig.18 V
389
sync
sync
timing and field identification.
sync
signal or the burstkey is used as internal horizontal
26
sync
active edge of the V
logic 0, it will be regarded as the 1st field. If FPOL is logic 0
and an active edge of the V
signal is logic 1, it will be regarded as the 2nd field. If FPOL
is logic 1 the 1st and 2nd field IDs are changed over.
sync
will be taken.
. If VSPOL is logic 0, the positive edge of the V
RESULT
432
sync
1st field
occurs when the F-ID signal is
sync
occurs when the F-ID
Preliminary specification
sync
sync
SAB9075H
MBE100
sync
will