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VCT 38xxA
ADVANCE INFORMATION
42
Micronas
h’2f
YC
r
C
b
mode control register
bit[6:0]
reserved (set to 0)
bit[7]
1
(has to be reset after read if used)
bit[8]
0
disable/enable YC
r
C
b
bit[9]
ADC range
0
nominal input amplitude (
±
350 mV)
1
extented input amplitude (
±
500 mV)
bit[11:10]
reserved (set to 0)
ADC over-/underflow
Note: Activate the YC
r
C
b
mode by
enabling YC
r
C
b
selecting simple PAL or NTSC M, svhs=1, comb=0 in the std register
setting cbw=2 in the insel register
0
YC
r
C
b
Comb Filter
h’27
comb filter control register
bit[0]
0
1
comb coefficients are calculated for luma/chroma
comb coefficients for luma are used for luma and
chroma
luma comb strength depends on signal amplitude
luma comb strength is independent of amplitude
reduced comb booster
max comb booster
comb strength for chroma signal
comb strength for luma signal
0..31 overall limitation of the calculated comb coefficients
0
no limitation
31
max limitation (1/2)
bit[1]
0
1
0
1
0..3
0..3
bit[2]
bit[4:3]
bit[6:5]
bit[11:7]
0
0
1
3
2
0
CMB_UC
CC
DAA
KB
KC
KY
CLIM
Color Processing
h’30
Saturation control
bit[11:0]
0...4094 (2070 corresponds to 100% saturation)
4095
disabled (test mode only)
2070
ACC_SAT
h’39
amplitude killer level (0:killer disabled)
25
KILVL
h’3a
amplitude killer hysteresis
5
KILHY
h’dc
NTSC tint angle,
±
512 =
±π
/4
0
TINT
DVCO
h’f8
crystal oscillator center frequency adjust,
2048 ... 2047
720
DVCO
h’f9
crystal oscillator center frequency adjustment value for line-lock mode
True adjust value is DVCO
ADJUST. For factory crystal alignment,
using standard video signal: set DVCO = 0, set lock mode, read crystal
offset from ADJUST register and use negative value for initial center
frequency adjustment via DVCO.
read only
ADJUST
h’f7
crystal oscillator line-locked mode, lock command/status
write: 100
0
read: 0
>2047
enable lock
disable lock
unlocked
locked
0
XLCK
h’b5
crystal oscillator line-locked mode, autolock feature. If autolock is
enabled, crystal oscillator locking is started automatically.
bit[11:0]
threshold; 0: autolock off
400
AUTOLOCK
FP Sub-
address
Function
Default
Name