SAA7109 PHILIPS [NXP Semiconductors], SAA7109 Datasheet - Page 73

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

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Table 39 Example for field processing
Notes
1. Single task every field; OFIDC = 0; subaddress 90H at 40H; TEB[80H[5]] = 0.
2. Tasks are used to scale to different output windows, priority on task B after SWRST.
3. Both tasks at
4. In examples 3 and 4 the association between input FID and tasks can be flipped, dependent on which time the SWRST is de-asserted.
5. Task B at
6. Task A and B at
7. State of prior field.
8. It is assumed that input/output FID = 0 (upper lines); UP = upper lines; LO = lower lines.
9. O = data output; NO = no output.
Processed by task
State of detected
ITU 656 FID
TOGGLE flag
Bit 6 of SAV/EAV byte
Required sequence
conversion at the vertical
scaler
Output
subaddresses 90H at 41H and C0H at 45H.
(8)
(9)
SUBJECT
2
3
frame rate constructed from neighbouring motion phases; task A at
1
2
frame rate; OFIDC = 0; subaddresses 90H at 43H and C0H at 42H.
1
3
frame rate of equidistant motion phases; OFIDC = 1; subaddresses 90H at 41H and C0H at 49H.
1/1
UP
UP
EXAMPLE 1
A
O
0
1
0
1/2
LO
LO
O
A
1
0
1
2/1
UP
UP
(1)
A
O
0
1
0
1/1
UP
UP
O
B
0
1
0
EXAMPLE 2
1/2
LO
LO
O
A
1
1
1
2/1
UP
UP
O
B
0
0
0
(2)(3)
2/2
LO
LO
O
A
1
0
1
FIELD SEQUENCE FRAME/FIELD
1/1
UP
LO
B
O
0
1
1
UP
1/2
LO
O
B
1
0
0
EXAMPLE 3
1
3
2/1
UP
LO
O
A
0
1
1
frame rate of equidistant motion phases; OFIDC = 1;
2/2
LO
LO
B
O
1
1
1
(2)(4)(5)
3/1
UP
UP
O
B
0
0
0
3/2
LO
UP
O
A
1
0
0
0
0
NO
1/1
UP
UP
B
0
(7)
(7)
1/2
LO
LO
O
B
1
1
1
EXAMPLE 4
2/1
UP
LO
O
A
0
1
1
2/2
1
1
NO
LO
LO
B
1
(7)
(7)
(2)(4)(6)
3/1
UP
UP
O
B
0
0
0
3/2
LO
UP
A
O
1
0
0