VDP 31xxB
PRELIMINARY DATA SHEET
FP Sub-
address
Function
Default
Name
Standard Selection
h’21
Input select:
bit[1:0]
writing to this register will also initialize the standard
insel
luma selector
VIN3
VIN2
VIN1
VIN4
00 vis
00
01
10
11
bit[2]
chroma selector
1
cis
0/1 VIN1/CIN
IF compensation
off
bit[4:3]
00 ifc
00
01
10
11
6 dB/Okt
12 dB/Okt
10 dB/MHz only for SECAM
bit[6:5]
chroma bandwidth selector
01 cbw
00
01
10
11
narrow
normal
broad
wide
bit[7]
bit[8]
bit[10:9]
0/1 adaptive/fixed SECAM notch filter
0/1 enable luma lowpass filter
hpll speed
fntch
lowp
hpllmd
00
01
10
11
no change
terrestrial
vcr
mixed
bit[11]
status bit, write 0, this bit is set to 1 to indicate
operation complete.
Comb Filter
h’27
comb filter control register
cmb_uc
cc
bit[0]
0
1
comb coefficients are calculated for luma/chroma
comb coefficients for luma are used for luma and
chroma
0
bit[1]
bit[2]
0
1
0
1
luma comb strength depends on signal amplitude
luma comb strength is independent of amplitude
reduced comb booster
0
1
daa
kb
max comb booster
bit[4:3]
bit[6:5]
bit[11:7]
0..3 comb strength for chroma signal
0..3 comb strength for luma signal
0..31 overall limitation of the calculated comb coefficients
3
2
0
kc
ky
clim
0
no limitation
31
max limitation (1/2)
Color Processing
h’39
h’3a
h’dc
amplitude killer level (0:killer disabled)
amplitude killer hysteresis
25 kilvl
5
0
kilhy
tint
NTSC tint angle, ±512 = ±π/4
40
Micronas
MICRONAS [ MICRONAS ]
