VDP 31xxB
PRELIMINARY DATA SHEET
33
Micronas
Table 3
–
2:
Backend I
2
C-control and status registers
I
2
C sub
address
Number
of bits
Mode
Function
Default
Name
PRIORITY BUS
priority mask register, if bit[x] is set to 1 then the function is
active for the respective signal priority
h
’
75
9
w v
bit [7:0]
bit[x] 0/1:select contrast,brightness,matrix
for main/side picture
0
PBCT
h
’
71
9
w v
bit [7:0]
bit[x] 0/1:select main (video)/external (via CLUT)
RGB
0
PBERGB
h
’
7d
9
w v
bit [7:0]
bit[x] 0/1:enable/disable black level expander
0
PBBLE
h
’
79
9
w v
bit [7:0]
bit[x] 0/1:disable/enable peaking transient
suppression when signal is switched
0
PBPK
h
’
4b
9
w v
bit [7:0]
bit[x] 0/1:disable/enable analog fast blank input
0
PBFB
h
’
47
9
w v
bit [2:0]
bit [8]
picture frame generator priority id
enable prio id for picture frame generator
0
PFGID
PFGEN
LUMA CHANNEL
h
’
61
9
w v
bit [5:0]
0..63/32
main picture contrast
32
CTM
h
’
65
9
w v
bit [5:0]
0..63/32
side picture contrast
32
CTS
h
’
51
9
w v
bit [8:0]
–
256..255
main picture brightness
0
BRM
h
’
55
9
w v
bit [8:0]
–
256..255
side picture brightness
0
BRS
h
’
59
9
w v
black level expander:
bit [3:0]
bit [8:4]
0..15
0...31
tilt coefficient
amount
8
12
BTLT
BAM
h
’
5d
9
w v
black level expander:
bit [8:0]
0..511
disable expansion, threshold value
200
BTHR
h
’
69
9
w v
luma peaking filter, the gain at high frequencies and small signal
amplitudes is: 1 + (k1+k2)/8
bit [3:0]
0..15
k1: peaking level undershoot
bit [7:4]
0..15
k2: peaking level overshoot
bit [8]
0/1
peaking value normal/inverted
(peaking/softening)
4
4
0
PKUN
PKOV
PKINV
h
’
6d
9
w v
luma peaking filter, coring
bit [4:0]
0..31
bit [7:5]
bit [8]
0/1
coring level
reserved
peaking filter center frequency high/low
3
0
COR
PFS
h
’
41
9
w v
luma soft limiter, slope A and B
bit [3:0]
bit [7:4]
slope segment A
slope segment B
0
0
LSLSA
LSLSB
h
’
45
9
w v
bit [7:0]
bit [8] 0/1
luma soft limiter absolute limit (unsigned)
modulation off/on
255
1
LSLAL
LSLM
h
’
49
9
w v
bit [8:0]
luma soft limiter segment B tilt point (unsigned)
300
LSLTB
h
’
4d
9
w v
bit [8:0]
luma soft limiter segment A tilt point (unsigned)
250
LSLTA