Philips Semiconductors
Product specification
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
Table 58 Vertical scaling and normalization
VERTICAL
SCALE
RATIO
BCS
(CONTR. | SAT.)
= X/Y × 64
COEFFICIENT
SEQUENCE (EXAMPLE)
WEIGHT
SUM
YACL
CYA; CYB
DCGY
1 to 1⁄2
(0)
1⁄2 to 1⁄3
(512)
0
1
1-1
01, 00
2
0
1
2
⁄
1-1-1
1-2-1
03, 00
01, 02
03, 00
3
4
4
0
1
1
3
1
1
1⁄3 to 1⁄4
(683)
1⁄4 to 1⁄5
(768)
2
3
1-1-1-1
4
⁄
1-1-1-1-1
1-2-2-2-1
111 111
07, 00
01, 06
07, 00
05, 02
03, 04
0F, 00
07, 08
0F, 00
5
8
6
8
8
7
8
8
1
2
1
2
2
2
2
2
5
1
1⁄5 to 1⁄6
(820)
4
5
⁄
6
4
121 121
112 211
1
1
1⁄6 to 1⁄7
(854)
111 1 111
111 2 111
1111 1111
⁄
7
8
1
1
1⁄7 to 1⁄8
(878)
1⁄8 to 1⁄9
(896)
6
7
8
⁄
1111 1 1111
1222 2 2221
1F, 00
01, 1E
1F, 00
09, 15
03, 1C
3F, 00
15, 2A
07, 38
3F, 00
2D, 12
0F, 30
7F, 00
2F, 50
3B, 44
7F, 00
6F, 10
3F, 40
FF, 00
7F, 80
FF, 00
9
2
3
3
3
3
2
3
3
2
3
3
2
3
3
2
3
3
2
3
3
9
16
10
16
16
11
16
16
12
16
16
13
16
16
14
16
16
15
16
16
1
1⁄9 to 1⁄10
(911)
8
1111 1 1 1111
⁄
8
10
2121 2 2 1212
1
1
1122 2 2 2211
1
1
1
8
⁄
⁄
10 to 1⁄11
(922)
9
1111 1 1 1 1111
1212 1 2 1 2121
1112 2 2 2 2111
1111 11 11 1111
1211 21 12 1121
1111 22 22 1111
1111 11 1 11 1111
1111 21 2 12 1111
1121 11 2 11 1211
1111 111 111 1111
1111 211 112 1111
1111 112 211 1111
1111 111 1 111 1111
1111 111 2 111 1111
1111 1111 1111 1111
⁄
11
1
1
11 to 1⁄12
(931)
10
11
12
13
⁄
8
12
1
1
8
⁄
⁄
⁄
12 to 1⁄13
(939)
⁄
13
1
1
13 to 1⁄14
(946)
⁄
1
1
8
14
1
1
14 to 1⁄15
(951)
⁄
8
15
1
1
1
1
⁄
15 to 1⁄16
(956)
16 to 1⁄17
(960)
14
15
16
⁄
⁄
1111 1111 1 1111 1111
2122 2222 2 2222 2212
FF, 00
02, FD
17
32
3
4
17
1
1998 Apr 09
74
NXP [ NXP ]
