SAA7109 PHILIPS [NXP Semiconductors], SAA7109 Datasheet - Page 186

• Manufacturer Part Number: SAA7109
• Description: PC-CODEC
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Table 224 Accumulation length; register set A [A1H[5:0]] and B [D1H[5:0]]
Table 225 Prescaler DC gain and FIR prefilter control; register set A [A2H[7:4]] and B [D2H[7:4]]; note 1
Note
1. X = don’t care.
Table 226 Prescaler DC gain and FIR prefilter control; register set A [A2H[3:0]] and B [D2H[3:0]]; note 1
Note
1. X = don’t care.
2004 Mar 16
Accumulation length = 1
Accumulation length = 2
...
Accumulation length = 64
Luminance FIR filter bypassed
H_y(z) =
H_y(z) =
H_y(z) =
Chrominance FIR filter bypassed
H_uv(z) =
H_uv(z) =
H_uv(z) =
Prescaler output is renormalized by gain factor = 1
Prescaler output is renormalized by gain factor =
Prescaler output is renormalized by gain factor =
Prescaler output is renormalized by gain factor =
Prescaler output is renormalized by gain factor =
Prescaler output is renormalized by gain factor =
Prescaler output is renormalized by gain factor =
Prescaler output is renormalized by gain factor =
Weighting of all accumulated samples is factor 1;
e.g. XACL = 4
Weighting of samples inside sequence is factor 2;
e.g. XACL = 4
PC-CODEC
HORIZONTAL PRESCALER ACCUMULATION
1
1
1
4
8
8
1
1
1
4
32
8
(1 2 1)
( 1 1 1.75 4.5 1.75 1 1)
(1 2 2 2 1)
(1 2 1)
(1 2 2 2 1)
(3 8 10 8 3)
SEQUENCE LENGTH (XACL)
FIR PREFILTER CONTROL
sequence 1 + 1 + 1 + 1 + 1
sequence 1 + 2 + 2 + 2 + 1
PRESCALER DC GAIN
1
1
1
1
1
1
1
2
4
8
16
32
64
128
186
XACL5 XACL4 XACL3 XACL2 XACL1 XACL0
PFUV1
XC2_1
...
0
0
1
X
X
X
X
X
X
X
X
X
X
X
X
0
0
1
1
0
1
...
0
0
1
CONTROL BITS 5 TO 0
CONTROL BITS 7 TO 4
CONTROL BITS 3 TO 0
XDCG2
PFUV0
SAA7108E; SAA7109E
X
X
X
X
X
X
0
1
0
1
0
0
0
0
1
1
1
1
...
0
0
1
XDCG1
...
0
0
1
PFY1
X
X
X
X
X
X
0
0
1
1
0
0
1
1
0
0
1
1
Product specification
...
0
0
1
XDCG0
PFY0
X
X
X
X
X
X
0
1
0
1
0
1
0
1
0
1
0
1
...
0
1
1