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