VCT 38xxA
ADVANCE INFORMATION
Table 2–4: I2C control and status registers of the video back-end
2
I C Sub
address
Number
of bits
Mode
Function
Default Name
1) priority mask register
If bit[x] is set to 1 then the function is active for the respective signal priority
Luminance Channel
h’61
h’65
h’51
h’55
h’75
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
main picture contrast
side picture contrast
main picture brightness
side picture brightness
32 CTM
32 CTS
0 BRM
0..63/32
−256..255
−256..255
0 BRS
luma channel, priority mask register
0 PBCT 1)
bit [7:0]
0/1
select contrast, brightness, matrix
for main/side picture
PBERGB 1)
0
h’71
h’59
9
9
w v
w v
luma channel, priority mask register
bit [7:0]
0/1
select main (video) / external (via CLUT)
RGB
Black-Level Expander
black-level expander
BLE1
8 BTLT
12 BAM
bit [3:0]
bit [8:4]
0..15
0...31
tilt coefficient
amount
h’5d
h’73
9
9
w v
w v
black-level expander, threshold:
bit [8:0] 0..511 disable expansion, threshold value
BLE2
200 BTHR
black-level expander, measurement
BLE3
0 BWL
15 BVST
bit[0]
bit [8:1]
0/1
0..255 vstart/2
start line = vstart
50/60 Hz measurement windowlength
stop line = 336/283 − vstart
or vertical blanking
h’7d
h’69
9
9
w v
w v
black-level expander, priority mask register
0 PBBLE 1)
bit [7:0]
0/1
enable/disable black-level expander
Dynamic Peaking
luma peaking filter, the gain at high frequencies and small signal
amplitudes is: 1 + (k1+k2)/8
PK1
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 PKUN
4 PKOV
0 PKINV
h’6d
h’79
9
9
w v
w v
luma peaking filter, coring
PK2
3 COR
bit [4:0]
bit [7:5]
bit [8]
low
0..31
coring level
reserved
peaking filter center frequency high/
0/1
0 PFS
luma peaking filter, priority mask register
0 PBPK 1)
bit [7:0]
0/1
disable/enable peaking transient
suppression when signal is switched
34
Micronas
MICRONAS [ MICRONAS ]
