ml87v21071 Oki Semiconductor, ml87v21071 Datasheet - Page 101

• Manufacturer Part Number: ml87v21071
• Description: Video Signal Noise Reduction Ic With A Built-in Frame Memory
• Manufacturer: Oki Semiconductor

OKI Semiconductor
CAVR2[6:0] Initial value: 111_1111; Setting range: 000_0000 to 111_1111
CAH2 Initial value: 0; Setting range: 0 to 1
Sets increase direction decision average value level of chrominance noise state 2.
Becomes the decision level of the noise level in increasing direction.
CAVR2[6:4] is an integral part and CAVR2[3:0] is a decimal part.
Make sure to set the value larger than CAVR1[5:0].
Sets decrease direction decision average value level hysteresis coefficient of chrominance noise state 2.
The decision level of the noise level in decreasing direction is set by (CAVR2[6:0]) × (Coefficient)
Table R2-3-8 (2) Chrominance Noise State 1 Decision Level Conditions
Table R2-3-8 (4) Chrominance Noise State 2 Decision Level Conditions
Table R2-3-8 (1) Luminance Noise State 1 Decision Level Conditions
Table R2-3-8 (3) Luminance Noise State 2 Decision Level Conditions
Table R2-3-8 (6) Chrominance Noise State 1 Hysteresis Coefficient
Table R2-3-8 (5) Luminance Noise State 1 Hysteresis Coefficient
CAVRO[6:0] ≤ (CAVR1[5:0] × Coefficient)
CAVRO[6:0] ≤ (CAVR2[6:0] × Coefficient)
YAVRO[6:0] ≤ (YAVR1[5:0] × Coefficient)
YAVRO[6:0] ≤ (YAVR2[6:0] × Coefficient)
YAH1
CAH1
0
1
0
1
YAVRO[6:0] > YAVR1[5:0]
CAVRO[6:0] > CAVR1[5:0]
YAVRO[6:0] > YAVR2[6:0]
CAVRO[6:0] > CAVR2[6:0]
Level condition
Level condition
Level condition
Level condition
Noise decrease direction switching coefficient
Noise decrease direction switching coefficient
3/4
7/8
3/4
7/8
YDTO1 = 0 → 1
YDTO1 = 1 → 0
CDTO1 = 0 → 1
CDTO1 = 1 → 0
YDTO2 = 0 → 1
YDTO2 = 1 → 0
CDTO2 = 0 → 1
CDTO2 = 1 → 0
State
State
State
State
PEDL87V21071-01
ML87V21071
101/123