Texas Instruments TMS320C64x DSP - Manual (Page 83)

BT.656 and Y/C Mode Field and Frame Operation
3-21 Video Capture Port SPRU629
Figure 3–8. VCOUNT Operation Example (EXC = 0)
V F
5
1 1
Line
VRST=0
1 0 525
1
262
VCOUNT
Field 1 Blanking
Field 2 Blanking
Field 1 Active
Field 2 Active
Field
1
FINV=0 FINV=1
Field
2
1 1
1 1
0 1
0 1
4
3
2
1
2
3
4
5
19
20
21
0 1
0 0
0 0
19
20
21
263 0 0
264 0 1
265 0 1
266 1 1
267 1 1
282 1 1
283 1 0
284 1 0
524 1 0
525 1 0
1 1 1
263
1
2
3
4
19
20
21
261
262
1
VRST=1
VCOUNT
Field
FINV=0 FINV=1
Field
244
243 2
245
246
247
248
1
2
1
1
2
2
1
1
2
2
1
262
1
2
2
1
1
2
244
245
246
247
248
263
1
2
242
243
244
1 2
2 1
2 1