參數資料
型號: VCT3801A
廠商: MICRONAS SEMICONDUCTOR HOLDING AG
英文描述: Video/Controller/Teletext IC Family
中文描述: 視頻/控制/圖文電視IC系列
文件頁數: 34/172頁
文件大小: 2243K
代理商: VCT3801A
VCT 38xxA
ADVANCE INFORMATION
34
Micronas
Table 2–4:
I
2
C control and status registers of the video back-end
I
2
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
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’75
9
w v
luma channel, priority mask register
bit [7:0]
0/1
select contrast, brightness, matrix
for main/side picture
0
PBCT
1)
h’71
9
w v
luma channel, priority mask register
bit [7:0]
0/1
select main (video) / external (via CLUT)
RGB
0
PBERGB
1)
Black-Level Expander
h’59
9
w v
black-level expander
bit [3:0]
bit [8:4]
0..15
0...31
tilt coefficient
amount
8
12
BLE1
BTLT
BAM
h’5d
9
w v
black-level expander, threshold:
bit [8:0]
0..511
disable expansion, threshold value
200
BLE2
BTHR
h’73
9
w v
black-level expander, measurement
bit[0]
0/1
bit [8:1]
0..255
50/60 Hz measurement windowlength
vstart/2
start line = vstart
stop line = 336/283
vstart
or vertical blanking
0
15
BLE3
BWL
BVST
h’7d
9
w v
black-level expander, priority mask register
bit [7:0]
0/1
enable/disable black-level expander
0
PBBLE
1)
Dynamic Peaking
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
PK1
PKUN
PKOV
PKINV
h’6d
9
w v
luma peaking filter, coring
bit [4:0]
0..31
bit [7:5]
bit [8]
0/1
low
coring level
reserved
peaking filter center frequency high/
3
0
PK2
COR
PFS
h’79
9
w v
luma peaking filter, priority mask register
bit [7:0]
0/1
disable/enable peaking transient
suppression when signal is switched
0
PBPK
1)
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