VDP 313xY
ADVANCE INFORMATION
Table 2–5: I2C control and status registers of the video backend
(Registers are set to ’0’ at reset, default values are recommendations)
I2C Sub
address
Number
of bits
Mode Function
Default Name
(hex)
(hex)
Luminance Channel
61
65
51
55
7D
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]
bit[7]
0..63/32 main contrast setting
0..63/32 side contrast setting
−256..255 main brightness setting
−256..255 side brightness setting
32
32
0
CTM
CTS
BRM
BRS
BLE
0
0/1
enable/disable black level
expander
0
59
9
w v
black level expander:
BLE1
BTLT
BAM
bit[3:0]
bit[8:4]
0..15
tilt coefficient
amount
8
0...31
12
5D
73
9
9
w v
w v
black level expander:
bit[8:0] 0..511
BLE2
disable expansion, threshold
value
200
BTHR
black level expander measurement
BLE3
BWL
bit[7:0]
bit[8]
0..255
0/1
vstart
0
50/60 Hz measurement
windowlength
15
BVST
start line = vstart
stop line = 336/283 − vstart (or vertical sync)
69
9
9
w v
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
4
4
0
PKUN
PKOV
PKINV
peaking value normal/inverted
(peaking/softening)
6D
w v
luma peaking filter, coring
PK2
bit[4:0]
bit[7:5]
bit[8]
0..31
coring level
reserved
3
0
COR
0/1
peaking filter center frequency
high/low
PFS
41
45
9
9
w v
w v
luma soft limiter, slope A and B
LSL1
bit[3:0]
bit[7:4]
slope segment A
slope segment B
0
0
LSLSA
LSLSB
luma soft limiter, absolute limit
LSL2
bit[7:0]
luma soft limiter absolute limit
(unsigned)
255
1
LSLAL
LSLM
bit[8]
0/1
modulation off/on
4D
49
9
9
w v
w v
bit[8:0]
luma soft limiter segment A tilt point
(unsigned)
250
300
LSLTA
LSLTB
bit[8:0]
luma soft limiter segment B tilt point
(unsigned)
32
Micronas
MICRONAS [ MICRONAS ]
