registers 59h to 5BH, There are programmable offsets in the horizontal and vertical direction available: parameters HOFF[10:0] 5BH[2:0] 59H[7:0],
VOFF[8:0] 5BH[4] 5AH[7:0], FOFF[5BH[7]] and VEP[5BH[5]]). I.e. these control registers are defining the decoder data output format - active video, raw
samples (optionally a test line), which is delivered from combfilter video decoder output to the expansion port output, the scaler and the VBI Data Slicer.
Table 7 Relationship of LCR to line numbers in 525 lines/60 Hz systems (part 1)
Vertical line offset, VOFF[8:0] = 06H,resp. 03H (subaddresses 5BH[4] and 5AH[7:0]); horizontal pixel offset, HOFF[10:0] = 347H (subaddresses 5BH[2:0]
and 59H[7:0]); FOFF = 1 (subaddress 5BH[7]), VEP = 0 (subaddress 5BH[5])
LINE
521
ry NUMBER
(1ST FIELD)
522
523
524
ACTIVE VIDEO
525
1
2
3
4
5
6
7
8
9
EQUALIZATION PULSES SERRATION PULSES EQUALIZATION PULSES
LINE
259
260
261
262
a d NUMBER
(2ND FIELD)
ACTIVE VIDEO
263
264
265
266
267
268
269
270
271
272
EQUALIZATION PULSES SERRATION PULSES EQUALIZATION PULSES
LCR
24
in ire VOFF=06H
2
3
4
5
6
7
8
9
LCR
24
VOFF = 03H
2
3
4
5
6
lim u Table 8 Relationship of LCR to line numbers in 525 lines/60 Hz systems (part 2)
Vertical line offset, VOFF[8:0] = 06H,resp. 03H (subaddresses 5BH[4] and 5AH[7:0]); horizontal pixel offset, HOFF[10:0] = 347H (subaddresses 5BH[2:0]
q and 59H[7:0]); FOFF = 1 (subaddress 5BH[7]), VEP = 0 (subaddress 5BH[5])
LINE
10
11
12
18
19
20
21
22
23
24
25
26
27
28
re re NUMBER
(1ST FIELD)
NOMINAL VBI-LINES F1
ACTIVE VIDEO
LINE
273 274 275
281 282 283 284 285 286 287 288 289 290 291
NUMBER
(2ND FIELD)
NOMINAL VBI-LINES F2
ACTIVE VIDEO
PLCR
13
14
15
18
19
20
21
22
23
24
VOFF = 06H
A LCR
7
8
9
ND VOFF = 03H
15
16
17
18
19
20
21
22
23
24