SAA4992H Datasheet, PDF (20/36 Pages) NXP Semiconductors – Field and line rate converter with noise reduction

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NAME
Control3
OddLeft
OrigFmEnY
IntpFmEnY
FillTPM
VertOffsDNR
Upconversion
Upconv1
UpcShFac
Upconv2
YVecClip
RollBack
SNERT
ADDRESS
HEX
READ/
WRITE⁽¹⁾
7
6
5
4
3
2
1
0
DESCRIPTION⁽²⁾
028
write; F
X interlace (even or odd) phase of the field which is written to the left
line memory tree (left MPRAM)
X enables writing luminance from de-interlacer in original field memory
(FM2), otherwise recirculation of luminance that is just read from FM2
(recirculate or update)
X
enables writing luminance from de-interlacer in interpolated field
memory (FM3), otherwise recirculation of luminance that is just read
from FM3 (recirculate or update)
X
Enables writing in temporal prediction memory (keep or update);
FillTPM should be set to ‘keep’ in SAA4991WP/film mode, in those
output fields where FM1 and FM2 contain the same motion phase.
FillTPM should be set to ‘update’ in all other situations.
XX
Set vertical vector offset of DNR (0, +1, − or −1) frame lines; vertical
offset of the right line memory tree with respect to the left line memory
tree, before the swap action. A higher offset value means: on the right
memory tree access to less delayed video lines is taken; in interlaced
video operation, the vertical offset will be −1 with an odd field on the
left side and +1 with an even field on the left. With non-interlaced
input, vertical offset should be constantly logic 0; in film mode, vertical
offset is dynamically switched between +1, 0 and −1. It should be
noted that the signal OddFM1 is used to determine this offset.
029
write; F
X X X X X X temporal interpolation factor used in luminance upconverter; value
ranges from 0 (for current field position) to 32 (for previous field
position)
02A
write
S
X X X value used for coring the vertical vector component before application
in the upconverter; range: 0 to 3.5 in steps of 0.5 line; should remain
at logic 0 in normal operation
F
XXXXX
roll back factor ranging from 0 (use 0% of estimated vectors) to 16
(use 100% of estimated vectors)