SAA7118 Datasheet, PDF (154/169 Pages) NXP Semiconductors – Multistandard video decoder with adaptive comb filter and component video input

Philips Semiconductors
Multistandard video decoder with adaptive
comb filter and component video input
Preliminary specification
SAA7118
Table 126 Prescaler DC gain and FIR prefilter control; register set A [A2H[3:0]] and B [D2H[3:0]]
X = don’t care.
PRESCALER DC GAIN
Prescaler output is renormalized by gain factor = 1
Prescaler output is renormalized by gain factor = ¹â„₂
Prescaler output is renormalized by gain factor = ¹â„₄
Prescaler output is renormalized by gain factor = ¹â„₈
Prescaler output is renormalized by gain factor = ¹â„₁₆
Prescaler output is renormalized by gain factor = ¹â„₃₂
Prescaler output is renormalized by gain factor = ¹â„₆₄
Prescaler output is renormalized by gain factor = ¹â„₁₂₈
Weighting of all accumulated samples is factor ‘1’;
e.g. XACL = 4 ⇒ sequence 1 + 1 + 1 + 1 + 1
Weighting of samples inside sequence is factor ‘2’;
e.g. XACL = 4 ⇒ sequence 1 + 2 + 2 + 2 + 1
XC2_1
X
X
X
X
X
X
X
X
0
CONTROL BITS D3 TO D0
XDCG2
0
0
0
0
1
1
1
1
X
XDCG1
0
0
1
1
0
0
1
1
X
XDCG0
0
1
0
1
0
1
0
1
X
1
X
X
X
15.7.10 SUBADDRESSES A4H TO A6H
Table 127 Luminance brightness control; register set A [A4H[7:0]] and B [D4H[7:0]]
LUMINANCE
BRIGHTNESS CONTROL
Value = 0
Nominal value = 128
Value = 255
BRIG7
0
1
1
BRIG6
0
0
1
CONTROL BITS D7 TO D0
BRIG5 BRIG4 BRIG3 BRIG2
0
0
0
0
0
0
0
0
1
1
1
1
BRIG1
0
0
1
BRIG0
0
0
1
Table 128 Luminance contrast control; register set A [A5H[7:0]] and B [D5H[7:0]]
LUMINANCE CONTRAST
CONTROL
Gain = 0
Gain = ¹â„₆₄
Nominal gain = 64
Gain = ¹²⁷⁄₆₄
CONT7
0
0
0
0
CONT6
0
0
1
1
CONTROL BITS D7 TO D0
CONT5
0
0
0
1
CONT4
0
0
0
1
CONT3
0
0
0
1
CONT2
0
0
0
1
CONT1
0
0
0
1
CONT0
0
1
0
1
Table 129 Chrominance saturation control; register set A [A6H[7:0]] and B [D6H[7:0]]
CHROMINANCE
SATURATION CONTROL
Gain = 0
Gain = ¹â„₆₄
Nominal gain = 64
Gain = ¹²⁷⁄₆₄
SATN7
0
0
0
0
SATN6
0
0
1
1
CONTROL BITS D7 TO D0
SATN5
0
0
0
1
SATN4
0
0
0
1
SATN3
0
0
0
1
SATN2
0
0
0
1
SATN1
0
0
0
1
SATN0
0
1
0
1
2001 May 30
154