vp520s Mitel, vp520s Datasheet - Page 7

• Manufacturer Part Number: vp520s
• Description: Pal/ntsc To Cif/qcif Converter
• Manufacturer: Mitel

A: Horizontal Luminance Store
This is a 24 byte RAM and coefficients will be stored as follows.
The full sequence is obtained by writing to Address 1, twenty
four times and supplying the required data.
Mode
CCIR -> CIF
CCIR -> QCIF
CIF -> CCIR
QCIF -> CCIR
B: Horizontal Chrominance Store
This is a 16 byte RAM and coefficients will be stored as follows,
by writing to Address 2 the required number of times.
Mode
CCIR -> CIF
CCIR -> QCIF
CIF -> CCIR
QCIF -> CCIR
C: Vertical Luminance Store
This is a 70 byte RAM and coefficients will be stored by writing
to Address 5 the required number of times.
Mode
625 line -> CIF
525 line -> CIF
625 -> QCIF
525 -> QCIF
CIF -> 625 line
CIF -> 525 line
Addresses
Addresses
Addresses
12-17
18-23
12-15
10-14
15-19
20-24
25-29
14-20
21-27
28-34
35-41
10-14
15-19
20-24
25-29
30-34
35-39
40-44
45-49
0-15
6-11
6-11
0-15
8-11
7-13
0-7
0-5
0-5
0-7
0-3
4-7
0-3
4-7
0-4
0-4
5-9
0-6
0-6
0-4
5-9
0-4
5-9
Coefficient Set
Coefficient Set
Coefficient Set
1, even field
1, even field
2, even field
3, even field
4, even field
5, even field
1, odd field
1, odd field
2, odd field
3, odd field
not used
not used
1
1
1
2
1
2
3
4
1
1
1
2
1
2
3
4
1
1
2
3
4
5
6
1
1
2
3
4
5
6
QCIF -> 625 line
OCIF -> 525 line
D: Vertical Chrominance Store
This is a 140 byte RAM and coefficients will be stored by
writing to Address 6 the required number of times.
Mode
625 line -> CIF
525 line -> CIF
625 line -> QCIF
525 line -> QCIF
CIF -> 625 line
CIF -> 525 line
QCIF -> 525 line
Addresses
105-111
98-104
50-54
55-59
14-20
21-27
14-20
21-27
28-34
35-41
42-48
49-55
56-62
63-69
10-14
14-20
10-14
15-19
10-14
15-19
20-24
25-29
30-34
35-39
40-44
45-49
50-54
55-59
14-20
21-27
28-34
35-41
42-48
49-55
56-62
63-69
70-76
77-83
84-90
91-97
7-13
7-13
7-13
7-13
0-6
0-6
0-4
0-4
5-9
0-6
0-6
0-4
5-9
0-4
5-9
0-6
Coefficient Set
10, even field
1, even field
2, even field
1, even field
2, even field
3, even field
4, even field
5, even field
1, even field
2, even field
1, even field
2, even field
3, even field
4, even field
5, even field
1, even field
2, even field
3, even field
4, even field
5, even field
6, even field
7, even field
8, even field
9, even field
1, odd used
4, odd field
5, odd field
1, odd field
2, odd field
1, odd field
2, odd field
3, odd field
4, odd field
5, odd field
1, odd field
2, odd field
2, odd field
3, odd field
4, odd field
5, odd field
1, odd field
2, odd field
3, odd field
4, odd field
5, odd field
6, odd field
not used
not used
1
1
2
3
1
1
2
3
VP520S
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