saa7114 NXP Semiconductors, saa7114 Datasheet - Page 115

• Manufacturer Part Number: saa7114
• Description: Pal/ntsc/secam Video Decoder With Adaptive Pal/ntsc Combfilter, Vbi-data Slicer And High Performance Scaler
• Manufacturer: NXP Semiconductors

Philips Semiconductors
SAA7114_3
Product data sheet
Table 114: Prescaler DC gain and FIR prefilter control; register set A [A2h[7:4]] and
[1]
Table 115: Prescaler DC gain and FIR prefilter control; register set A [A2h[3:0]] and
[1]
FIR prefilter control
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 DC gain
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
1 + 1 + 1 + 1 + 1
Weighting of samples inside
sequence is factor ‘2’;
e.g. XACL = 4
1 + 2 + 2 + 2 + 1
X = don’t care.
X = don’t care.
1
1
1
1
1
1
4
8
8
B [D2h[7:4]]
B [D2h[3:0]]
4
32
8
(1 2 1)
( 1 1 1.75 4.5 1.75 1 1) X
(1 2 2 2 1)
(1 2 1)
(1 2 2 2 1)
(3 8 10 8 3)
1
1
1
1
1
1
1
2
4
8
16
32
64
128
sequence
sequence
Rev. 03 — 17 January 2006
[1]
[1]
Control bits D3 to D0
XC2_1
X
X
X
X
X
X
X
X
0
1
Control bits D7 to D4
PFUV1
X
0
1
1
X
X
0
XDCG2
0
0
0
0
1
1
1
1
X
X
PFUV0
X
X
X
X
1
0
1
0
PAL/NTSC/SECAM video decoder
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
XDCG1
0
0
1
1
0
0
1
1
X
X
PFY1
0
0
1
1
X
X
X
X
SAA7114
XDCG0
0
1
0
1
0
1
0
1
X
X
PFY0
0
1
0
1
X
X
X
X
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