27
TABLE 19. SLICED VBI DATA ENABLE REGISTER
SUB ADDRESS = 0A
H
BIT
NO.
FUNCTION
DESCRIPTION
RESET
STATE
7-6
Sliced
Closed Captioning
Enable
00 = Closed caption disabled
01 = Closed caption enabled for odd fields: line 21 for NTSC, line 18 for (M) PAL, or line 22 for
(B, D, G, H, I, N, N
C
) PAL
10 = Closed caption enabled for even fields: line 284 for NTSC, line 281 for (M) PAL, or line 335
for (B, D, G, H, I, N, N
C
) PAL
11 = Closed caption enabled for both odd and even fields
00
B
5-4
Sliced
WSS Enable
00 = WSS disabled
01 = WSS enabled for odd fields: line 20 for NTSC; line 17 for (M) PAL, or line 23 for (B, D, G,
H, I, N, N
C
) PAL
10 = WSS enabled for even fields: line 283 for NTSC, line 280 for (M) PAL, or line 336 for (B, D,
G, H, I, N, N
C
) PAL
11 = WSS enabled for both odd and even fields
00
B
3-2
Sliced Teletext
Enable
00 = Teletext disabled10 = Teletext system C enabled
01 = Teletext system B enabled11 = Teletext system D enabled
00
B
1-0
Reserved
00
B
TABLE 20. SLICED VBI DATA OUTPUT REGISTER
SUB ADDRESS = 0B
H
BIT
NO.
FUNCTION
DESCRIPTION
RESET
STATE
7
Sliced Closed
Caption BT.656
Output
Enable
If set to “1”, this bit enables output of sliced closed captioning via BT.656 ancillary data.
Closed captioning must be enabled by the Sliced VBI Data Enable register 0A
H
.
Access via the I
2
C interface is always available.
0
B
6
Sliced WSS
BT.656 Output
Enable
If set to “1”, this bit enables output of sliced WSS via BT.656 ancillary data.
WSS must be enabled by the Sliced VBI Data Enable register 0A
H
.
Access via the I
2
C interface is always available.
0
B
5
Sliced Teletext
BT.656 Output
Enable
If set to “1”, this bit enables output of sliced teletext via BT.656 ancillary data.
Teletext data is not available via the I
2
C interface.
0
B
4-1
Reserved
0000
B
0
RTCI BT.656
Output Enable
If set to “1”, this bit enables output of RTCI data as BT.656 ancillary data.
0
B
TABLE 21. VBI DATA STATUS REGISTER
SUB ADDRESS = 0C
H
BIT
NO.
FUNCTION
DESCRIPTION
RESET
STATE
7
CC Odd Field
Detect Status
This bit is read-only. Data written to this bit is ignored.
If set to “1”, Closed Captioning (CC) data is detected on the odd field.
0
B
6
CC Even Field
Detect Status
This bit is read-only. Data written to this bit is ignored.
If set to “1”, Closed Captioning (CC) data is detected on the even field.
0
B
5
WSS Odd Field
Detect Status
This bit is read-only. Data written to this bit is ignored.
If set to “1”, Wide Screen Signalling (WSS) data is detected on the odd field.
0
B
4
WSS Even Field
Detect Status
This bit is read-only. Data written to this bit is ignored.
If set to “1”, Wide Screen Signalling (WSS) data is detected on the even field.
0
B
3
VBI Teletext
Detect Status
This bit is read-only. Data written to this bit is ignored.
If set to “1”, Teletext data is detected during the vertical blanking interval.
0
B
2-0
Reserved
000
B
HMP8117