VDP 31xxB
PRELIMINARY DATA SHEET
35
Micronas
Name
Default
Function
Mode
Number
of bits
I
2
C sub
address
h
’
4c
9
w v
digital OSD insertion contrast for R (amplitude range: 0 to 255)
bit [3:0]
0..13
R amplitude = CLUTn
·
(DRCT + 4)
14,15
invalid
picture frame insertion contrast for R (ampl. range: 0 to 255)
bit [7:4]
0..13
R amplitude = PFCR
·
(PFRCT + 4)
14,15
invalid
8
8
DRCT
PFRCT
h
’
48
9
w v
digital OSD insertion contrast for G (amplitude range: 0 to 255)
bit [3:0]
0..13
G amplitude = CLUTn
·
(DGCT + 4)
14,15
invalid
picture frame insertion contrast for G (ampl. range: 0 to 255)
bit [7:4]
0..13
G amplitude = PFCG
·
(PFGCT + 4)
14,15
invalid
8
8
DGCT
PFGCT
h
’
44
9
w v
digital OSD insertion contrast for B (amplitude range: 0 to 255)
bit [3:0]
0..13
B amplitude = CLUTn
·
(DBCT + 4)
14,15
invalid
picture frame insertion contrast for B (ampl. range: 0 to 255)
bit [7:4]
0..13
B amplitude = PFCB
·
(PFBCT + 4)
14,15
invalid
8
8
DBCT
PFBCT
PICTURE FRAME GENERATOR
h
’
4F
9
w v
bit [8:0] horizontal picture frame begin
code 0 = picture frame generator horizontally disabled
code 1FF = full frame
0
PFGHB
h
’
53
9
w v
bit [8:0] horizontal picture frame end
0
PFGHE
h
’
63
9
w v
bit [8:0] vertical picture frame begin
code 0 = picture frame generator vertically disabled
270
PFGVB
h
’
6f
9
w v
bit [8:0] vertical picture frame end
56
PFGVE
enable and priority
–
see under
‘
PRIORITY BUS
’
picture frame color
–
see under
‘
COLOR LOOK-UP TABLE
’
SCAN VELOCITY MODULATION
h
’
62
9
w v
video mode coefficients
bit [5:0]
gain1
bit [8:6]
differentiator delay 1 (0= filter off, 1...6= delay)
60
4
SVG1
SVD1
h
’
5e
9
w v
text mode coefficients
bit [5:0]
bit [8:6]
gain 2
differentiator delay 2 (0= filter off, 1...6= delay)
60
4
SVG2
SVD2
h
’
5a
9
w v
limiter
bit [6:0]
bit [8:5]
limit value
not used, set to
”
0
”
100
0
SVLIM
h
’
56
9
w v
delay and coring
bit [3:0]
adjustable delay, in 1/2 display clock steps,
(value 5 : delay of SVMOUT is the same as for
RGBOUT
coring value
not used, set to
”
0
”
bit [7:4]
bit [8]
7
0
SVDEL
SVCOR